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Top Forums Shell Programming and Scripting System Command dies even when command gets executed successfully Post 302522392 by ahamed101 on Sunday 15th of May 2011 04:45:14 AM
Old 05-15-2011
Well, it works for me fine. It prints the "Hello" on stdout

Code:
[ahamed@ahamed test]$ cat run
#!/usr/bin/perl

system($cmd) || die "FAILED $!";
print "Hello\n";

[ahamed@ahamed test]$ ./run
Hello

regards,
Ahamed
 

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File::CheckTree(3)					User Contributed Perl Documentation					File::CheckTree(3)

NAME
File::CheckTree - run many filetest checks on a tree SYNOPSIS
use File::CheckTree; $num_warnings = validate( q{ /vmunix -e || die /boot -e || die /bin cd csh -ex csh !-ug sh -ex sh !-ug /usr -d || warn "What happened to $file? " }); DESCRIPTION
The validate() routine takes a single multiline string consisting of directives, each containing a filename plus a file test to try on it. (The file test may also be a "cd", causing subsequent relative filenames to be interpreted relative to that directory.) After the file test you may put "|| die" to make it a fatal error if the file test fails. The default is "|| warn". The file test may optionally have a "!' prepended to test for the opposite condition. If you do a cd and then list some relative filenames, you may want to indent them slightly for readability. If you supply your own die() or warn() message, you can use $file to interpolate the filename. Filetests may be bunched: "-rwx" tests for all of "-r", "-w", and "-x". Only the first failed test of the bunch will produce a warning. The routine returns the number of warnings issued. AUTHOR
File::CheckTree was derived from lib/validate.pl which was written by Larry Wall. Revised by Paul Grassie <grassie@perl.com> in 2002. HISTORY
File::CheckTree used to not display fatal error messages. It used to count only those warnings produced by a generic "|| warn" (and not those in which the user supplied the message). In addition, the validate() routine would leave the user program in whatever directory was last entered through the use of "cd" directives. These bugs were fixed during the development of perl 5.8. The first fixed version of File::CheckTree was 4.2. perl v5.16.3 2013-02-07 File::CheckTree(3)
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