[HowTo] Configure Bitbucket or GitHub with multiple SSH keys

Configure Jenkins to work with Git repositories over SSH

Rename Git user in pushed commits

#!/bin/sh

git filter-branch --env-filter '
OLD_EMAIL="wrong@gmail.com"
CORRECT_NAME="vurdalakov"
CORRECT_EMAIL="vurdalakov@gmail.com"
if [ "$GIT_COMMITTER_EMAIL" = "$OLD_EMAIL" ]
then
    export GIT_COMMITTER_NAME="$CORRECT_NAME"
    export GIT_COMMITTER_EMAIL="$CORRECT_EMAIL"
fi
if [ "$GIT_AUTHOR_EMAIL" = "$OLD_EMAIL" ]
then
    export GIT_AUTHOR_NAME="$CORRECT_NAME"
    export GIT_AUTHOR_EMAIL="$CORRECT_EMAIL"
fi
' --tag-name-filter cat -- --branches --tags

Batch file to clone/pull all GitHub repositories for a given user

@echo off
@setlocal enableextensions enabledelayedexpansion

set gituser=vurdalakov

set curl=curl.exe
set git=git.exe

for /f "delims=" %%a in ('%curl% -i -s https://api.github.com/users/%gituser%/repos') do (
        set line=%%a
        if not !line!==!line:"name"=! (
            set line=!line:"=!
            set line=!line:name:=!
            set line=!line:,=!
            set name=!line: =!
            if exist !name!\nul (
                cd !name!
                %git% pull
                cd ..
            ) else (
                %git% clone https://github.com/%gituser%/!name!.git
            )
        )
    )
)

Batch file to print all public GitHub repositories for a given user

@echo off
@setlocal enableextensions enabledelayedexpansion

set gituser=vurdalakov

set curl=curl.exe

for /f "delims=" %%a in ('%curl% -i -s https://api.github.com/users/%gituser%/repos') do (
        set line=%%a
        if not !line!==!line:"name"=! (
            set line=!line:"=!
            set line=!line:name:=!
            set line=!line:,=!
            set line=!line: =!
            echo !line!
        )
    )
)

How to ignore whole directory except one file with .gitignore

!bin
bin/*
!bin/Release
bin/Release/*
!bin/Release/MyApplication.exe