Hi, I am modifying a perl script to call a shell script. the shell script usually returns a numeric return code, so i need to check for cases where the file may not be present, may not be executable or may return a non-numeric return code . Ive been toying around with various options and the current code looks like this: 
 $proc = \( 0+ `/aa/bb/cc.ksh arg1` ); 
 if (! $proc || $proc !~ /\d/){ ....

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any idea how this should be modified. if you could point me to a concise tutorial also that would help. all the tutorials i find seem to be rather large to dig for a relatively small piece of info.thanks

In reply to How to check for existence,executabilituy and return code when executing a shell script from perl by usrlocal

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