1. Create a script
$ vi myscript.bash
$ vi myscript.sh
$ vim myscript.bash
2. Setup executable permission
$ chmod +x your-script-name
$ chmod 755 your-script-name
3. Run a script (execute a script)
$ bash bar
$ sh bar
$ ./bar
4. example
| $ vi ginfo # # # Script to print user information who currently login , current date & time # clear echo "Hello $USER" echo "Today is \c ";date echo "Number of user login : \c" ; who | wc -l echo "Calendar" cal exit 0 |