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my issue is this: prlimit -t5 echo foo works fine (cpu limit) but

prlimit -s5 echo foo (stack size limit) prlimit -v5000 echo foo (address space limit)

both return: prlimit: failed to execute echo: Argument list too long

My system is linuxmint version 19, prlimit -V returns 'from util-linux 2.31.1'

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Ok, I found the solution: from prlimit's man2 page (https://linux.die.net/man/2/prlimit):

this limit also determines the amount of space used for the process's command-line arguments

since this limit is given in bytes, 5 or even 500 bytes are not enough to pass the argument foo

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