¿Cómo conoce un script Bash Linux/Unix su propio PID?
Tengo un script en Bash llamado Script.sh, y necesita saber su propio PID (es decir, necesito obtener PID dentro del Script.sh )
¿Alguna idea de cómo hacer esto ?
116
Author: Sopalajo de Arrierez, 2010-03-22
5 answers
La variable ' $ $ ' contiene el PID.
187
Author: Paul Tomblin,
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2010-03-22 15:53:45
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2010-03-22 15:53:45
Use $BASHPID o $$
Consulte el manual para obtener más información, incluidas las diferencias entre los dos.
39
Author: tvanfosson,
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2010-03-22 16:14:13
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2010-03-22 16:14:13
Además del ejemplo dado en Advanced Bash Scripting Guide referenciado por Jefromi , estos ejemplos muestran cómo las tuberías crean subconchas:
$ echo $$ $BASHPID | cat -
11656 31528
$ echo $$ $BASHPID
11656 11656
$ echo $$ | while read line; do echo $line $$ $BASHPID; done
11656 11656 31497
$ while read line; do echo $line $$ $BASHPID; done <<< $$
11656 11656 11656
28
Author: Dennis Williamson,
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2010-03-22 17:55:34
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2010-03-22 17:55:34
El PID se almacena en $$.
Ejemplo: kill -9 $$ eliminará la instancia de shell desde la que se llama.
6
Author: neo,
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2013-02-15 21:10:42
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2013-02-15 21:10:42
Puede usar la variable $$.
2
Author: Klaus Byskov Pedersen,
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2010-03-22 15:54:00
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2010-03-22 15:54:00