perl question

BG_JrAdmin · #1 (**permalink**) 09-09-2005

If I use 2 system commands in a script, will one finish before the next one starts? or will it start the first and the second at the same time?
i.e.

system("ps | grep rminer");
system("ls -al | grep 431");

cbkihong · #2 (**permalink**) 09-09-2005

In general, It should run one command, wait for it to complete, before executing the other.

Of course, it will not if the command is launched in the background, with "&" or if the program itself is configured to automatically put itself in background mode, such as gvim.

From the manpage for "system":

Quote:

Does exactly the same thing as "exec LIST", except that a fork is done first, and the parent process waits for the child process to complete.

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