Exec function arguments

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Hello Monks,

I am trying to use the exec function. I understand that in the exec function, exec LIST means the exec command is followed by the process to start. If my process has more than one arguments, should I separate each argument with a comma like below?

If I type in my command line:
myProcess argument1 argument2 argument3

Then to do the same thing as an exec will be:
exec "myProcess.exe", "argument1", "argument2", "argument3";
[download]

Thanks

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Re: Exec function arguments by borisz (Canon) on Jan 07, 2005 at 00:56 UTC
Yes. Sometimes I use `qw`. But a comma seprated list is fine. `exec qw(/bin/ls -l);` [download] Boris	[reply] [d/l]
Re: Exec function arguments by revdiablo (Prior) on Jan 07, 2005 at 02:03 UTC
This is more a question of Perl's syntax than a question about `exec` in particular. You can use any standard Perl method to construct a list, and pass that list to `exec`. What you have is a very reasonable method of doing that. borisz provided another example, and here are a few more: `my @args = ("arg1", "arg2", "arg3"); exec "myProcess.exe", @args; # array will be smashed into a list my %args = ( --arg1 => 'val1', --arg2 => 'val2', --arg3 => 'val3', ); exec "myProcess.exe", %args; # hash will be smashed into a list my @args = qw(arg1 arg2 arg3); # a bit of syntax sugar exec "myProcess.exe", map { "--$_ 'foo'" } @args; # map returns a list` [download] As you can see, there are many ways to make lists in Perl. Which one you pick depends on the situation, but, like I said, the example you've shown is very reasonable.	[reply] [d/l] [select]