Dica: Testar a existencia de um processo

[Mateus Caruccio]

Ola,

   Se você quiser saber se um determinado processo esta rodando, basta enviar o 
sinal 0 (zero) para ele:

$ ps
  PID TTY          TIME CMD
 1289 pts/0    00:00:00 bash
 1920 pts/0    00:00:00 ps
$ kill -0 1289
$ echo $?
0
$ killall -0 bash
$ echo $?
0
$ kill -0 1234567
bash: kill: (1234567) - No such process
$ echo $?
1
$ killall -0 nonexistingprocess
nonexistingprocess: no process killed
$ echo $?
1
$ if ! kill -0 1234567 2>/dev/null; then
> echo nao existe;
> fi
nao existe


# ########################################################
# Mateus de Oliveira Caruccio <caruccio at operamail.com>
# Linux User #183552 - UIN #37364320
# Vim, vi e matei o Emacs !



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