how to select
pid number
and pipe then to next command in terminal?



Assume the string is in parameter x then…

y=${x##pid=}; echo ${y%%,}

This is a way to do it without launching any additional processes.

(Note: There may be a way to nest these parameter expansions into one expression, but I don’t know how to do that, if it’s possible.)


When I tooted the first toot, it thought that the stars were to highlight text for italics, that’s why they didn’t print in the first toot. So, I made it an image instead.

This is “parameter expansion” in BASH.

man bash

section “Parameter Expansion”


here it is in plain text...

y=${x##*pid=}; echo ${y%%,*}

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