Get the source code in the mask with the help of shims

install ： Core tools Mask

The main tools used are
mask

stay Mac The installation method in is

brew install mask

Core tools Mask The related documents

• Mask Examples of tool usage

  • Mask Examples of tool usage

Code location

This page

fake Simulated code

General purpose shims Code for

publish

[ With the help of shims How to get mask Source code in ]

Mission

echo-path

Show PATH environment variable

echo "${PATH}"

which-bash

Show bash route

which bash

bash-version

Show bash edition

bash --version

bin-bash

Use /bin In the path bash

export PATH="/bin:${PATH}"
mask echo-path
mask which-bash
mask bash-version

Post run output

/bin:......
/bin/bash
GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin19)
Copyright (C) 2007 Free Software Foundation, Inc.

usr-bash

Use /usr/local/bin In the path bash

export PATH="/usr/local/bin:${PATH}"
mask echo-path
mask which-bash
mask bash-version

Post run output

/usr/local/bin:......
/usr/local/bin/bash
GNU bash, edition  5.0.18(1)-release (x86_64-apple-darwin19.5.0)
Copyright (C) 2019 Free Software Foundation, Inc.
 license  GPLv3+: GNU GPL  License version 3 or later  <http://gnu.org/licenses/gpl.html>

 This software is free software , You are free to change and republish .
 To the extent permitted by law, it is hereby expressly stated that , This software does not provide any warranty .

fake-bash

Use simulated bash Echo code

fake="$(cd fake; pwd)"
echo "${fake}"
export PATH="${fake}:${PATH}"
mask echo-path
mask which-bash
mask bash-version

Simulated bash Code for

echo '$# = '${#}
for i in "[email protected]"
do
    echo $i
done

Post run output

./fake
$# = 2
-c
echo "${PATH}"
$# = 2
-c
which bash
$# = 2
-c
bash --version

raw-code

Use the universal shims Echo code

raw_shims="$(cd raw-shims; pwd)"
echo "${raw_shims}"
export PATH="${raw_shims}:${PATH}"
mask echo-path
mask which-bash
mask bash-version
mask raw-code

General purpose shims Code for

if [ "${#}" -ne 2 ];
then
    exit 1;
fi
if [ "${1}" != "-c" ];
then
    exit 2;
fi
echo "${2}"

Post run output

./raw-code/raw-shims
echo "${PATH}"

which bash

bash --version

raw_shims="$(cd raw-shims; pwd)"
echo "${raw_shims}"
export PATH="${raw_shims}:${PATH}"
mask echo-path
mask which-bash
mask bash-version
mask raw-code