8000 kill: signal names only understood in uppercase, should accept all casings · Issue #6217 · uutils/coreutils · GitHub
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kill: signal names only understood in uppercase, should accept all casings #6217

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BenWiederhake opened this issue Apr 12, 2024 · 3 comments · Fixed by #6229
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kill: signal names only understood in uppercase, should accept all casings #6217

BenWiederhake opened this issue Apr 12, 2024 · 3 comments · Fixed by #6229
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@BenWiederhake
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BenWiederhake commented Apr 12, 2024 •
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(Originally documented in #6202)

$ cargo run --features kill kill -l sIgUsR2
kill: unknown signal name 'sIgUsR2'
[$? = 1]
$ kill -l sIgUsR2 # bash built-in
12
$ /usr/bin/kill -l sIgUsR2 # Debian procps-ng 4.0.4
12

TODO: I assume GNU 9.5 kill also behaves like that, but I can't check right now
@BenWiederhake BenWiederhake mentioned this issue Apr 12, 2024
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@cakebaker
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Yes, GNU kill behaves in the same way.

@m-haisham
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m-haisham commented Apr 14, 2024 •
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Does the old form also accept non uppercase signal names? I assume not

@m-haisham m-haisham mentioned this issue Apr 14, 2024
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@BenWiederhake
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If by "old form" you mean just the signal name without the "SIG" prefix, then yes, it does accept it:

$ sleep 999 &
[1] 2037120
$ kill -s uSr1 2037120  # bash builtin
[1]+  Benutzerdefiniertes Signal 1    sleep 999
$ sleep 999 &
[1] 2037165
$ /usr/bin/kill -s uSr1 2037165  # Debian procps-ng
[1]+  Benutzerdefiniertes Signal 1    sleep 999
$ sleep 999 &
[1] 2037174
$ ../gnu/src/kill -s uSr1 2037174  # GNU 9.5
[1]+  Benutzerdefiniertes Signal 1    sleep 999
$

This was referenced May 7, 2024
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kill: accept all cases for signal names m-haisham/coreutils
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@cakebaker @BenWiederhake @m-haisham
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