bash
https://github.com/xgqfrms/bash-all-in-one
$ cd src
# $ chmod x ./test.sh
# $ chmod 777 ./test.sh
$ chmod 755 ./test.sh
linux
https://github.com/xgqfrms/linux
https://github.com/xgqfrms/linux-shell-script-programming/
https://github.com/xgqfrms/xgqfrms.github.io/tree/master/Linux/bash