Get PID (process id) from Perl Script $$ or $PID
SCCS – script header While sccs checked out a file, add these lines to the top of your script to preserve versions and file information. [bash] # Master: %P% # SCCS id: %Z% %M% %I% %E% [/bash]
Perl – Lock Files (flock) The following script is an example of using lock files in Perl. This prevents more than one user or process accessing a file at a time. [perl] use Fcntl qw(:DEFAULT :flock); use Fcntl ‘:flock’;¬†¬†¬†¬† #LOCK_* constants my($lockneedsremoving)=0; my($lockfilename)=”/var/.pwd.lock”; unless (createlock()) { print “Lock has been created”; print “This is only […]
VNC server on Unix Starting the VNC server on Unix for the First time VNC Server installs in /usr/local/bin, you need to make sure you have both /usr/local/bin and /usr/openwin/bin in your path, also the first time you run vnc you need to setup a vnc password, this is done with the /usr/local/bin/vncpassword command. After […]
The PHP date() function is used to format a time and/or date. The PHP Date() Function The PHP date() function formats a timestamp to a more readable date and time. A timestamp is a sequence of characters, denoting the date and/or time at which a certain event occurred. Syntax date(format,timestamp) Parameter Description format Required. Specifies […]
PHP Array An array stores multiple values in one single variable. What is an Array? A variable is a storage area holding a number or text. The problem is, a variable will hold only one value. An array is a special variable, which can store multiple values in one single variable. If you have a […]
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iPad Lock Screen Position Press your home button twice. This brings up the app bar that shows all actively running apps (yes, multitasking is here!). Simply slide the bar to the right to display the screen lock button, as well as iPod controls, brightness and volume control. Bam!
Perl Substr substr This function supports three sets of passed values as follows: [perl] substr (STRING,OFFSET,LEN,REPLACEMENT) substr (STRING,OFFSET,LEN) substr (STRING,OFFSET) [/perl] The function: substr (STRING,OFFSET) returns all characters in the string after the designated offset from the start of the passed string. The function: substr (STRING,OFFSET,LEN) returns all characters in the string after the designated […]
Perl Lower/Upper Case First Character ucfirst Takes a string and retruns it with the first character in upper case. [perl] ucfirst Str1 [/perl] lcfirst Takes a string and retruns it with the first character in lower case. [perl] lcfirst Str1 [/perl]