$$ in shell script

$$ is the process ID (PID) of the script itself.

$BASHPID is the process ID of the current instance of Bash. This is not the same as the $$ variable, but it often gives the same result.

Source: unix.stackexchange.com

Similar codes

18 votes213 views3 answers
Firebase cli
Shell/Bash
0 vote198 views2 answers
Desinstalar paquetes ubuntu
Shell/Bash
0 vote213 views1 answer
Git pull with ssh
Shell/Bash
1 vote223 views3 answers
Certbot renew
Shell/Bash
0 vote214 views1 answer
Install MUI React UI framework
Shell/Bash
0 vote184 views1 answer
Install imamgemagic
Shell/Bash
0 vote190 views1 answer
Bash script for list
Shell/Bash
1 vote173 views1 answer
Zip destination folder
Shell/Bash
9 votes226 views6 answers
Certbot
Shell/Bash
0 vote174 views2 answers
Ufw allow port range
Shell/Bash