$$ 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

0 vote294 views1 answer
Remove mongo lock file from centos 7
Shell/Bash
4 votes298 views10 answers
Install nvm mac
Shell/Bash
1 vote268 views1 answer
Xampp the installer requires root privileges
Shell/Bash
9 votes323 views9 answers
Material ui
Shell/Bash
0 vote315 views1 answer
How to use taggit manager in django
Shell/Bash
3 votes273 views1 answer
How to install java 8 and set java_home in ubuntu
Shell/Bash
1 vote263 views1 answer
Ionic icon dimensions
Shell/Bash
0 vote283 views1 answer
Stop port in use 8000
Shell/Bash
8 votes332 views2 answers
Create new repository on the command line
Shell/Bash
6 votes266 views5 answers
Add label to pod kubectl
Shell/Bash