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zeus 2021-06-18 13:44:06 +02:00
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falsefriends.md
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@ -8,7 +8,7 @@ an empty string in `$PATH` is equivalent to `.`, so prepending `:` to your PATH,
killall -1
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in `killall` the parameter `-1` is - differnently to `kill` NOT interpreted as signal, but is a special variable for "applies to everything except PID1 and self". Therefore no signal is given, and the default one (15, SIGTERM) will be applied to each and every PID (but is then usually reduced again to the searchterm given). So `killall -1 java` does in pseudocode effectively: `where name is java; do [ ! PID == 1 ] && kill -s 15 $name; done` ...very dangerous
in `killall` the parameter `-1` is - differently to `kill` - NOT interpreted as signal, but is a special variable for "applies to everything except PID1 and self". Therefore no signal is given, and the default one (15, SIGTERM) will be applied to each and every PID (but is then usually reduced again to the searchterm given). So `killall -1 java` does in pseudocode effectively: `where name is java; do [ ! PID == 1 ] && kill -s 15 $name; done` ...very dangerous
grep -irl
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