rishabh

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Perl – Execute Command With Timeout

Perl – Execute Command With Timeout [perl] my $command_to_check = “$SSH_CON $host $SSH_CMD”; if (! execute_command($command_to_check)) { next; } sub execute_command($) { ### Executes a command with timeout ### Returns 0 if fails ### Returns 1 on success my $command=shift; my $timeout=30; eval { local $SIG{ALRM} = sub{die;}; my($oalarm) = alarm($timeout); $result=`$command 2>&1`; if ($? […]
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Search String in Directory – UNIX

Search String in Directory – UNIX How to search for a string in a selection of files (-exec grep …). [bash] find . -exec grep “searchstring” ‘{}’ \; -print [/bash] [bash] find . -exec grep “searchstring” ‘{}’ \; -ls [/bash] This command will search in the current directory and all sub directories. All files that […]
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Date/Time in a Timestamp format – Perl

Date/Time in a Timestamp format – Perl [perl] use Date::Manip; #### – Get DATE / TIME in correct format – ########## my $day= strftime “%d”, localtime; my $month= strftime “%m”, localtime; my $year = strftime “%Y”, localtime; my $now = localtime(time()); #################################################### $form_date_start = “$year/$month/$day 06:00:00”; [/perl]
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Flush perl‚ Äôs print buffer – $|=1

Flush perl‚Äôs print buffer – $|=1 If you put a print statement inside of a loop that runs really really quickly, you won‚Äôt see the output of your print statement until the program terminates. The solution to this problem is to ‚Äúflush‚Äù the output buffer after each print statement. Where $| is non zero, it […]
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Mac Book Pro – Sleeping Issues

Mac Book Pro – Sleeping Issues OS X supports five different sleep modes: 0 – Old style sleep mode, with RAM powered on while sleeping, safe sleep disabled, and super-fast wake. 1 – Hibernation mode, with RAM contents written to disk, system totally shut down while ‚Äúsleeping,‚Äù and slower wake up, due to reading the […]
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