[PATCH] Convert PosixLike scripts to sh, reduce duplication and fix some bugs

[Rebecca Cran <rebecca@bluestop.org>]

Since the scripts in the PosixLike directory are very simple, convert
them to use /bin/sh, and move duplicated code into common files (one for
python scripts, one for C binaries).

Fix some bugs in edksetup.sh and BuildEnv: `test` uses single equals instead
of double equals, and should have a space before the ending bracket. Fix
some indentation, and if the user runs edksetup.sh with --help etc., quit
after displaying the help message.
---
 BaseTools/BinWrappers/PosixLike/BPDG          | 15 ++--------
 BaseTools/BinWrappers/PosixLike/Brotli        | 30 ++-----------------
 .../BinWrappers/PosixLike/BrotliCompress      | 12 ++++----
 BaseTools/BinWrappers/PosixLike/DevicePath    | 30 ++-----------------
 BaseTools/BinWrappers/PosixLike/Ecc           | 15 ++--------
 BaseTools/BinWrappers/PosixLike/EfiRom        | 30 ++-----------------
 BaseTools/BinWrappers/PosixLike/GenCrc32      | 30 ++-----------------
 BaseTools/BinWrappers/PosixLike/GenDepex      | 15 ++--------
 BaseTools/BinWrappers/PosixLike/GenFds        | 15 ++--------
 BaseTools/BinWrappers/PosixLike/GenFfs        | 30 ++-----------------
 BaseTools/BinWrappers/PosixLike/GenFv         | 30 ++-----------------
 BaseTools/BinWrappers/PosixLike/GenFw         | 30 ++-----------------
 .../BinWrappers/PosixLike/GenPatchPcdTable    | 15 ++--------
 BaseTools/BinWrappers/PosixLike/GenSec        | 30 ++-----------------
 .../BinWrappers/PosixLike/GenerateCapsule     | 15 ++--------
 BaseTools/BinWrappers/PosixLike/LzmaCompress  | 30 ++-----------------
 .../BinWrappers/PosixLike/LzmaF86Compress     |  2 +-
 BaseTools/BinWrappers/PosixLike/PatchPcdValue | 15 ++--------
 BaseTools/BinWrappers/PosixLike/Pkcs7Sign     | 15 ++--------
 .../PosixLike/Rsa2048Sha256GenerateKeys       | 15 ++--------
 .../BinWrappers/PosixLike/Rsa2048Sha256Sign   | 15 ++--------
 BaseTools/BinWrappers/PosixLike/Split         | 30 ++-----------------
 BaseTools/BinWrappers/PosixLike/TargetTool    | 15 ++--------
 BaseTools/BinWrappers/PosixLike/TianoCompress | 30 ++-----------------
 BaseTools/BinWrappers/PosixLike/Trim          | 15 ++--------
 BaseTools/BinWrappers/PosixLike/UPT           | 15 ++--------
 BaseTools/BinWrappers/PosixLike/VfrCompile    | 30 ++-----------------
 BaseTools/BinWrappers/PosixLike/VolInfo       | 30 ++-----------------
 BaseTools/BinWrappers/PosixLike/build         | 15 ++--------
 BaseTools/BinWrappers/PosixLike/common.sh     | 12 ++++++++
 BaseTools/BinWrappers/PosixLike/commonbin.sh  | 28 +++++++++++++++++
 BaseTools/BuildEnv                            |  3 +-
 edksetup.sh                                   | 12 ++++----
 33 files changed, 110 insertions(+), 559 deletions(-)
 create mode 100644 BaseTools/BinWrappers/PosixLike/common.sh
 create mode 100644 BaseTools/BinWrappers/PosixLike/commonbin.sh

diff --git a/BaseTools/BinWrappers/PosixLike/BPDG b/BaseTools/BinWrappers/PosixLike/BPDG
index c894384908..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/BPDG
+++ b/BaseTools/BinWrappers/PosixLike/BPDG
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh
 
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python
-if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then
-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" -m $cmd.$cmd "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/Brotli b/BaseTools/BinWrappers/PosixLike/Brotli
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/Brotli
+++ b/BaseTools/BinWrappers/PosixLike/Brotli
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ]
-then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ]
-then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ]
-then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh
 
+. "$(dirname "$(realpath "$0")")/commonbin.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/BrotliCompress b/BaseTools/BinWrappers/PosixLike/BrotliCompress
index ea86705a28..7cb26a3659 100755
--- a/BaseTools/BinWrappers/PosixLike/BrotliCompress
+++ b/BaseTools/BinWrappers/PosixLike/BrotliCompress
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
 #
 # This script will exec Brotli tool with -e/-d options.
 #
@@ -20,21 +20,21 @@ do
     -e)
       ;;
     -d)
-      ARGS+="$1 "
+      ARGS="$ARGS $1"
       ;;
     -o|-g)
-      ARGS+="$1 $2 "
+      ARGS="$ARGS $1 $2"
       shift
       ;;
     -q)
-      QLT="$1 $2 "
+      QLT="$1 $2"
       shift
       ;;
     *)
-      ARGS+="$1 "
+      ARGS="$ARGS $1"
       ;;
   esac
   shift
 done
 
-exec Brotli $QLT $ARGS
+exec "$(dirname "$0")/Brotli" $QLT $ARGS
diff --git a/BaseTools/BinWrappers/PosixLike/DevicePath b/BaseTools/BinWrappers/PosixLike/DevicePath
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/DevicePath
+++ b/BaseTools/BinWrappers/PosixLike/DevicePath
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ]
-then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ]
-then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ]
-then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh
 
+. "$(dirname "$(realpath "$0")")/commonbin.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/Ecc b/BaseTools/BinWrappers/PosixLike/Ecc
index 15edf52106..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/Ecc
+++ b/BaseTools/BinWrappers/PosixLike/Ecc
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh
 
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python
-if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then
-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" -m $cmd.EccMain "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/EfiRom b/BaseTools/BinWrappers/PosixLike/EfiRom
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/EfiRom
+++ b/BaseTools/BinWrappers/PosixLike/EfiRom
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ]
-then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ]
-then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ]
-then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh
 
+. "$(dirname "$(realpath "$0")")/commonbin.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/GenCrc32 b/BaseTools/BinWrappers/PosixLike/GenCrc32
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/GenCrc32
+++ b/BaseTools/BinWrappers/PosixLike/GenCrc32
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ]
-then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ]
-then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ]
-then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh
 
+. "$(dirname "$(realpath "$0")")/commonbin.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/GenDepex b/BaseTools/BinWrappers/PosixLike/GenDepex
index 183cf58224..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/GenDepex
+++ b/BaseTools/BinWrappers/PosixLike/GenDepex
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh
 
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python
-if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then
-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/AutoGen/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/GenFds b/BaseTools/BinWrappers/PosixLike/GenFds
index c894384908..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/GenFds
+++ b/BaseTools/BinWrappers/PosixLike/GenFds
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh
 
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python
-if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then
-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" -m $cmd.$cmd "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/GenFfs b/BaseTools/BinWrappers/PosixLike/GenFfs
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/GenFfs
+++ b/BaseTools/BinWrappers/PosixLike/GenFfs
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ]
-then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ]
-then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ]
-then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh
 
+. "$(dirname "$(realpath "$0")")/commonbin.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/GenFv b/BaseTools/BinWrappers/PosixLike/GenFv
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/GenFv
+++ b/BaseTools/BinWrappers/PosixLike/GenFv
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ]
-then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ]
-then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ]
-then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh
 
+. "$(dirname "$(realpath "$0")")/commonbin.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/GenFw b/BaseTools/BinWrappers/PosixLike/GenFw
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/GenFw
+++ b/BaseTools/BinWrappers/PosixLike/GenFw
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ]
-then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ]
-then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ]
-then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh
 
+. "$(dirname "$(realpath "$0")")/commonbin.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/GenPatchPcdTable b/BaseTools/BinWrappers/PosixLike/GenPatchPcdTable
index f3770eed42..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/GenPatchPcdTable
+++ b/BaseTools/BinWrappers/PosixLike/GenPatchPcdTable
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh
 
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python
-if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then
-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$cmd/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/GenSec b/BaseTools/BinWrappers/PosixLike/GenSec
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/GenSec
+++ b/BaseTools/BinWrappers/PosixLike/GenSec
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ]
-then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ]
-then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ]
-then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh
 
+. "$(dirname "$(realpath "$0")")/commonbin.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/GenerateCapsule b/BaseTools/BinWrappers/PosixLike/GenerateCapsule
index 023048c61d..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/GenerateCapsule
+++ b/BaseTools/BinWrappers/PosixLike/GenerateCapsule
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh
 
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python
-if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then
-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/Capsule/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/LzmaCompress b/BaseTools/BinWrappers/PosixLike/LzmaCompress
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/LzmaCompress
+++ b/BaseTools/BinWrappers/PosixLike/LzmaCompress
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ]
-then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ]
-then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ]
-then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh
 
+. "$(dirname "$(realpath "$0")")/commonbin.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/LzmaF86Compress b/BaseTools/BinWrappers/PosixLike/LzmaF86Compress
index 078cb1e21d..4049f9f596 100755
--- a/BaseTools/BinWrappers/PosixLike/LzmaF86Compress
+++ b/BaseTools/BinWrappers/PosixLike/LzmaF86Compress
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
 #
 # This script will exec LzmaCompress tool with --f86 option that enables converter for x86 code.
 #
diff --git a/BaseTools/BinWrappers/PosixLike/PatchPcdValue b/BaseTools/BinWrappers/PosixLike/PatchPcdValue
index f3770eed42..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/PatchPcdValue
+++ b/BaseTools/BinWrappers/PosixLike/PatchPcdValue
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh
 
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python
-if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then
-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$cmd/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/Pkcs7Sign b/BaseTools/BinWrappers/PosixLike/Pkcs7Sign
index f3770eed42..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/Pkcs7Sign
+++ b/BaseTools/BinWrappers/PosixLike/Pkcs7Sign
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh
 
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python
-if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then
-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$cmd/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256GenerateKeys b/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256GenerateKeys
index ea71c7c61a..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256GenerateKeys
+++ b/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256GenerateKeys
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh
 
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python
-if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then
-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/Rsa2048Sha256Sign/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256Sign b/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256Sign
index f3770eed42..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256Sign
+++ b/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256Sign
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh
 
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python
-if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then
-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$cmd/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/Split b/BaseTools/BinWrappers/PosixLike/Split
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/Split
+++ b/BaseTools/BinWrappers/PosixLike/Split
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ]
-then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ]
-then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ]
-then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh
 
+. "$(dirname "$(realpath "$0")")/commonbin.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/TargetTool b/BaseTools/BinWrappers/PosixLike/TargetTool
index f3770eed42..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/TargetTool
+++ b/BaseTools/BinWrappers/PosixLike/TargetTool
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh
 
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python
-if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then
-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$cmd/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/TianoCompress b/BaseTools/BinWrappers/PosixLike/TianoCompress
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/TianoCompress
+++ b/BaseTools/BinWrappers/PosixLike/TianoCompress
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ]
-then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ]
-then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ]
-then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh
 
+. "$(dirname "$(realpath "$0")")/commonbin.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/Trim b/BaseTools/BinWrappers/PosixLike/Trim
index 1dd28e9662..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/Trim
+++ b/BaseTools/BinWrappers/PosixLike/Trim
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh
 
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python
-if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then
-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-exe=$(basename "$full_cmd")
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$exe/$exe.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/UPT b/BaseTools/BinWrappers/PosixLike/UPT
index f3770eed42..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/UPT
+++ b/BaseTools/BinWrappers/PosixLike/UPT
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh
 
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python
-if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then
-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$cmd/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/VfrCompile b/BaseTools/BinWrappers/PosixLike/VfrCompile
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/VfrCompile
+++ b/BaseTools/BinWrappers/PosixLike/VfrCompile
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ]
-then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ]
-then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ]
-then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh
 
+. "$(dirname "$(realpath "$0")")/commonbin.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/VolInfo b/BaseTools/BinWrappers/PosixLike/VolInfo
index 0945d86d92..3dfa26e517 100755
--- a/BaseTools/BinWrappers/PosixLike/VolInfo
+++ b/BaseTools/BinWrappers/PosixLike/VolInfo
@@ -1,29 +1,3 @@
-#!/usr/bin/env bash
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ]
-then
-  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
-elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ]
-then
-  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
-  then
-    echo "BaseTools C Tool binary was not found ($cmd)"
-    echo "You may need to run:"
-    echo "  make -C $EDK_TOOLS_PATH/Source/C"
-  else
-    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
-  fi
-elif [ -e "$dir/../../Source/C/bin/$cmd" ]
-then
-  exec "$dir/../../Source/C/bin/$cmd" "$@"
-else
-  echo "Unable to find the real '$cmd' to run"
-  echo "This message was printed by"
-  echo "  $0"
-  exit 127
-fi
+#!/bin/sh
 
+. "$(dirname "$(realpath "$0")")/commonbin.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/build b/BaseTools/BinWrappers/PosixLike/build
index f3770eed42..a9da3afb4b 100755
--- a/BaseTools/BinWrappers/PosixLike/build
+++ b/BaseTools/BinWrappers/PosixLike/build
@@ -1,14 +1,3 @@
-#!/usr/bin/env bash
-#python `dirname $0`/RunToolFromSource.py `basename $0` $*
+#!/bin/sh
 
-# If a ${PYTHON_COMMAND} command is available, use it in preference to python
-if command -v ${PYTHON_COMMAND} >/dev/null 2>&1; then
-    python_exe=${PYTHON_COMMAND}
-fi
-
-full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
-dir=$(dirname "$full_cmd")
-cmd=${full_cmd##*/}
-
-export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$cmd/$cmd.py" "$@"
+. "$(dirname "$(realpath "$0")")/common.sh"
diff --git a/BaseTools/BinWrappers/PosixLike/common.sh b/BaseTools/BinWrappers/PosixLike/common.sh
new file mode 100644
index 0000000000..63a45bb54c
--- /dev/null
+++ b/BaseTools/BinWrappers/PosixLike/common.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+# If a ${PYTHON_COMMAND} command is available, use it in preference to python
+if command -v "${PYTHON_COMMAND}" >/dev/null 2>&1; then
+    python_exe=${PYTHON_COMMAND}
+fi
+
+dir="$(dirname "$(realpath "$0")")"
+cmd=${0##*/}
+
+export PYTHONPATH="${dir}/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
+exec "${python_exe:-python}" "${dir}/../../Source/Python/$cmd/${cmd}.py" "$@"
diff --git a/BaseTools/BinWrappers/PosixLike/commonbin.sh b/BaseTools/BinWrappers/PosixLike/commonbin.sh
new file mode 100644
index 0000000000..948def9ce7
--- /dev/null
+++ b/BaseTools/BinWrappers/PosixLike/commonbin.sh
@@ -0,0 +1,28 @@
+#!/bin/sh
+
+dir="$(dirname "$(realpath "$0")")"
+cmd=${0##*/}
+
+if [ -n "$WORKSPACE" ] && [ -e "$WORKSPACE/Conf/BaseToolsCBinaries" ]
+then
+  exec "$WORKSPACE/Conf/BaseToolsCBinaries/$cmd"
+elif [ -n "$WORKSPACE" ] && [ -e "$EDK_TOOLS_PATH/Source/C" ]
+then
+  if [ ! -e "$EDK_TOOLS_PATH/Source/C/bin/$cmd" ]
+  then
+    echo "BaseTools C Tool binary was not found ($cmd)"
+    echo "You may need to run:"
+    echo "  make -C $EDK_TOOLS_PATH/Source/C"
+  else
+    exec "$EDK_TOOLS_PATH/Source/C/bin/$cmd" "$@"
+  fi
+elif [ -e "$dir/../../Source/C/bin/$cmd" ]
+then
+  exec "$dir/../../Source/C/bin/$cmd" "$@"
+else
+  echo "Unable to find the real '$cmd' to run"
+  echo "This message was printed by"
+  echo "  $0"
+  exit 127
+fi
+
diff --git a/BaseTools/BuildEnv b/BaseTools/BuildEnv
index ff0c5115a5..b321828471 100755
--- a/BaseTools/BuildEnv
+++ b/BaseTools/BuildEnv
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 ## @file
 # Setup the environment for unix-like systems running a bash-like shell.
 # This file must be "sourced" not merely executed. For example: ". edksetup.sh"
@@ -136,7 +137,7 @@ SetEdkToolsPath() {
   #
   # Try $PACKAGES_PATH
   #
-  if [ -n "$PACKAGES_PATH"]
+  if [ -n "$PACKAGES_PATH" ]
   then
     PATH_LIST=${PACKAGES_PATH//:/ }
     for DIR in $PATH_LIST
diff --git a/edksetup.sh b/edksetup.sh
index a8897d10f8..4457be6e96 100755
--- a/edksetup.sh
+++ b/edksetup.sh
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 #
 # Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
 # Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR>
@@ -115,8 +116,8 @@ function SetupPython3()
 {
   if [ $origin_version ];then
       origin_version=
-    fi
-    for python in $(whereis python3)
+  fi
+  for python in $(whereis python3)
     do
       python=$(echo $python | grep "[[:digit:]]$" || true)
       python_version=${python##*python}
@@ -133,8 +134,8 @@ function SetupPython3()
         origin_version=$python_version
         export PYTHON_COMMAND=$python
       fi
-    done
-    return 0
+  done
+  return 0
 }
 
 function SetupPython()
@@ -148,7 +149,7 @@ function SetupPython()
     fi
   fi
 
-  if [ $PYTHON3_ENABLE ] && [ $PYTHON3_ENABLE == TRUE ]
+  if [ $PYTHON3_ENABLE ] && [ $PYTHON3_ENABLE = TRUE ]
   then
     SetupPython3
   fi
@@ -204,6 +205,7 @@ do
     ;;
     -?|-h|--help|*)
       HelpMsg
+      return 0
       break
     ;;
   esac
-- 
2.20.1