Oracle Solaris 11 Overview Production ready release delivering leading operating system technology innovation to improve availability, efficiency, scalability, performance, and security in the data center. What’s New Documentation System Requirements FAQ Oracle Solaris 11 Express raises the bar on the functionality introduced in Oracle Solaris 10, continuing Oracle’s leadership for providing the best choice for […]
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 ($? […]
MYSQL – Replication Login to your mysql server: mysql -uBla -p Some useful commands SHOW SLAVE STATUS; SHOW MASTER STATUS; SHOW PROCESSLIST ; SHOW SLAVE HOSTS;
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 […]
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]
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 […]
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 […]
GET or POST – Secure GET is NOT Secure GET is not a secure method of sending data. Don’t use it for forms that send password info, credit card data or other sensitive information. Since the data is passed through as part of the URL, it’ll show up in the web server’s logfile (complete with […]
Perl – Trim Text, Trim String Left trim- ltrim or lstrip removes white spaces from the left side of a string: [perl] $str =~ s/^\s+//; [/perl] Right trim – rtrim or rstrip removes white spaces from the right side of a string: [perl] $str =~ s/\s+$//; [/perl] Trim Both [perl] $str =~ s/^\s+|\s+$//g [/perl] [perl] […]
Recursively Expand a NIS Netgroup @results=expand_ng(); # Given a netgroup, will return a list of members. Will recurse # netgroups if the $recurse flag is set sub expand_ng { my($netgroup)=@_; my(@returnng); my($ng)=`ypmatch $netgroup netgroup`; $? != 0 and return; #Don’t continue for duff netgroups my($value); $ng =~ s/\s+/ /g; #Compress whitespace $ng =~ s/\s+,/,/g; #Remove […]