Irfan, *$?*
The status returned by the last pipe close, backtick (`` ) command, successful call to wait() or waitpid(), or from the system() operator. This is just the 16-bit status word returned by the wait() system call (or else is made up to look like it). Thus, the exit value of the subprocess is really ($?>> 8 ), and $? & 127 gives which signal, if any, the process died from, and $? & 128 reports whether there was a core dump. (Mnemonic: similar to *sh* and *ksh*.) rgds, Rajeev Kilaru On 2/2/07, Sayed, Irfan (Irfan) <[EMAIL PROTECTED]> wrote:
Could you please elaborate what is the meaning of $? >>8; Regards Irfan. ------------------------------ *From:* kilaru rajeev [mailto:[EMAIL PROTECTED] *Sent:* Friday, February 02, 2007 8:23 PM *To:* Sayed, Irfan (Irfan) *Subject:* Re: command execution Is it working, Irfan? Rajeev On 2/2/07, kilaru rajeev <[EMAIL PROTECTED]> wrote: > > Hi Irfan, > > You can capture the exit status in the following way. > > system("command"); > $ExitStatus = $? >>8; > > Regards, > Rajeev kilaru > > On 2/2/07, Sayed, Irfan (Irfan) <[EMAIL PROTECTED]> wrote: > > > > Hi All, > > > > I am executing following script. but even if the command execution > > fails > > it prints as success exit status = 0 > > > > can anybody please help > > > > Regards > > Irfan. > > > > > > use strict; > > use warnings; > > my $CT = '/usr/atria/bin/cleartool'; > > print " Creating the view for VB \n"; > > my $cmd = "$CT mkview -tag vb_test3 -tmode insert_cr -host puvob01 > > -hpath /home/ccvob01/vb_test3.vws -gpath /home/ccvob01/vb > > _test3.vws /home/ccvob01/vb_test3.vws"; > > print "==> $cmd\n"; > > if (system("$cmd &> /tmp/jui") == 0) { > > print " success, exit status = $?\n"; > > } else { > > print " failure, exit status = $?\n"; > > } > > > > > > > > >
