Re: help needede in backticks(``) and system function

The difference is whether the output (STDOUT) is captured or now. Backticks return what was printed to STDOUT, while system does not.

From the docs, it sounds like backticks always pass the command to a subshell, while it's possible to avoid running a subshell with system.

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Re^2: help needede in backticks(``) and system function by uva (Sexton) on Feb 10, 2006 at 06:38 UTC
thanks ikegami.... will both the execution will interrupt the paren.i mean, will parent program wait until the child completes execution.	[reply]
Re^3: help needede in backticks(``) and system function by ikegami (Patriarch) on Feb 10, 2006 at 06:41 UTC
Yes, the parent will wait in both cases. Unless you do execute something like `command &` (unix) or `start command` (Windows). `fork`+`exec` doesn't wait. IPC::Open3 doesn't wait. IPC::Run can do both. The special syntax `system 1, ...` in Windows doesn't wait.	[reply] [d/l] [select]