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- - echo $$ (https://www.linuxquestions.org/questions/linux-newbie-8/echo-%24%24-847058/)

geekpie

11-28-2010 12:46 PM

echo $$

What does echo $$ give as output?

druuna

11-28-2010 12:51 PM

From the bash man page:

Quote:

Expands to the process ID of the shell. In a () subshell, it expands to the process ID of the current shell, not the sub-shell.

bigrigdriver

11-28-2010 12:55 PM

$$
process ID variable. The $$ variable holds the process ID of the script in which it appears.

geekpie

11-29-2010 06:04 AM

thanks.

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