how to select
`pid number`
in
`users:(("postgres",pid=1644,fd=3))`
and pipe then to next command in terminal?
Assume the string is in parameter x then...
y=${x##*pid=}; echo ${y%%,*}
This is a way to do it without launching any additional processes.
(Note: There may be a way to nest these parameter expansions into one expression, but I don't know how to do that, if it's possible.)
When I tooted the first toot, it thought that the stars were to highlight text for italics, that's why they didn't print in the first toot. So, I made it an image instead.
This is "parameter expansion" in BASH.
man bash
section "Parameter Expansion"
@Acer
here it is in plain text...
y=${x##*pid=}; echo ${y%%,*}