pidof: Support '-t' flag

[dezgeg]

This flag makes pidof print thread ids of threads belonging to the matching processes.

[sylvestre]

Could you please add a test to make sure we don't regress? Thanks

[dezgeg]

Could you please add a test to make sure we don't regress? Thanks

Added

[cakebaker]

Looks good.

I noticed a small difference to the original pidof, though: it lists the IDs in a descending order whereas we use an ascending order:

$ pidof konsole -t
26231 26230 26229 26228 1365 1364 1363 1362 1361
$ cargo run -q  pidof konsole -t
1361 1362 1363 1364 1365 26228 26229 26230 26231

Without the -t flag, both use a descending order.

[dezgeg]

Looks good.

I noticed a small difference to the original pidof, though: it lists the IDs in a descending order whereas we use an ascending order:

$ pidof konsole -t
26231 26230 26229 26228 1365 1364 1363 1362 1361
$ cargo run -q  pidof konsole -t
1361 1362 1363 1364 1365 26228 26229 26230 26231

Without the -t flag, both use a descending order.

Good catch, also found out that -s combined with -t wasn't working right. Both should work now.

[Krysztal112233]

Great work :)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Report is 11 commits behind head on main.

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