The '-a' flag[0] which should list the full cmd line seems to be limited
to 4096 chars[1].
In most case it is more than enough, but not always the case for java
processes with long classpaths for instance as describe in the bug
description.
[0] -a, --list-full
List the full command line as well as the process ID. (pgrep
only.)
[1] pgrep.c
44
45 #define CMDSTRSIZE 4096
46
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https://bugs.launchpad.net/bugs/1839329
Title:
pgrep: Use POSIX _SC_ARG_MAX for maximum pgrep -f command line length
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