Beefy Boxes and Bandwidth Generously Provided by pair Networks
Clear questions and runnable code
get the best and fastest answer
 
PerlMonks  

Re^5: tar, system() & pipes?

by Argel (Prior)
on Jul 17, 2007 at 22:11 UTC ( [id://627145] : note . print w/replies, xml ) Need Help??


in reply to Re^4: tar, system() & pipes?
in thread tar, system() & pipes?

Why is quotemeta needed or why do you have to call 'system' this way? For quotemeta the code will work for files with special characters in them. For system I imagine the LIST version exists to make it easier to pass in a large number of parameters, deal with ones with special characters, and/or build a list of parameters without having to join them later on. As explained by others the IO redirection ('>') is something the shell handles but when system is called in LIST context it will be passed to the tar command as a parameter instead. Because tar has no '>' command line option it errors out -- just like it does with any other incorrect parameter (e.g. -y).