Re^2: $0 inconsistency?

in reply to Re: $0 inconsistency?
in thread $0 inconsistency?

Seems Linux specifc with a 16 byte limit as explained here (Perl 5.14 delta): Assignment to $0 sets the legacy process name with prctl() on Linux

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Re^3: $0 inconsistency? by mr_mischief (Monsignor) on Apr 13, 2022 at 18:34 UTC
Eh... not quite. Setting `argv[0]` in the process should work on most POSIX systems. That change is an additional thing it does for Linux, and notes the limit for that. This is on a Mac.: `$ perl -e '$0="my really awesome process name"; sleep 60;' & [1] 73413 $ ps PID TTY TIME CMD 70164 ttys002 0:00.05 /opt/local/bin/bash 677 ttys004 0:05.06 /opt/local/bin/bash 73413 ttys004 0:00.03 my really awesome process name` [download]	[reply] [d/l] [select]

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Re^3: $0 inconsistency?
by mr_mischief (Monsignor) on Apr 13, 2022 at 18:34 UTC

Eh... not quite. Setting argv[0] in the process should work on most POSIX systems. That change is an additional thing it does for Linux, and notes the limit for that.

This is on a Mac.:

$ perl -e '$0="my really awesome process name"; sleep 60;' &
[1] 73413
$ ps
  PID TTY           TIME CMD
70164 ttys002    0:00.05 /opt/local/bin/bash
  677 ttys004    0:05.06 /opt/local/bin/bash
73413 ttys004    0:00.03 my really awesome process name
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