Get PID (process id) from Perl Script
Get PID (process id) from Perl Script $$ or $PID
SCCS – script header
SCCS – script header While sccs checked out a file, add these lines to the top of your script to preserve versions and file information. [bash] # Master: %P% # SCCS id: %Z% %M% %I% %E% [/bash]
Perl – Lock Files (flock)
Perl – Lock Files (flock) The following script is an example of using lock files in Perl. This prevents more than one user or process accessing a file at a time. [perl] use Fcntl qw(:DEFAULT :flock); use Fcntl ‘:flock’;¬†¬†¬†¬† #LOCK_* constants my($lockneedsremoving)=0; my($lockfilename)=”/var/.pwd.lock”; unless (createlock()) { print “Lock has been created”; print “This is only […]
VNC server on Unix
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 […]
PHP Date
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
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 […]