UNIX Archives - PODTECH

Programming, UNIX

UNIX – Fork Explained

Mr. Peabody Explains fork() Introduction How Windows Does It How Unix Does It So Why Do People Want the Unix Way? How does it work in Perl? Introduction UNIX – Fork Explained Say, Mr Peabody. I was just reading through the Perl 5.6 release notes and noticed that a new function called fork() is now […]

Miscellaneous

UNIX Perl – Get local IP with ifconfig

UNIX Perl – Get local IP with ifconfig Replace ETH0 with the interface you need.. my $IP = `ifconfig eth0| awk ‘/dr:/{gsub(/.*:/,””,\$2);print\$2}’`; $IP =~ s/\s+$//;

UNIX

UNIX Boot Mode – Run Levels

UNIX Boot Mode – Run Levels Runlevel “3” will boot to text or console mode and “5” will boot to the graphical login mode ( “4” for slackware) Runlevel Scripts Directory (Red Hat/Fedora Core) State 0 /etc/rc.d/rc0.d/ shutdown/halt system 1 /etc/rc.d/rc1.d/ Single user mode 2 /etc/rc.d/rc2.d/ Multiuser with no network services exported 3 /etc/rc.d/rc3.d/ Default […]

Perl, UNIX

Unix find and replace text within all files within a directory

Unix find and replace text within all files within a directory Trying to do a search on an entire directory, finding all the instances of the text “applicationX” and replacing all instances with the text “applicationY”. find /path/to/start/from/ -type f | xargs perl -pi -e ‘s/applicationX/applicationY/g’

UNIX

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]

UNIX

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 […]

UNIX

UNIX – Fork Explained

UNIX Perl – Get local IP with ifconfig

UNIX Boot Mode – Run Levels

Unix find and replace text within all files within a directory

SCCS – script header

VNC server on Unix

Recent Posts

Company Information

Our Services

Expertise

Main Headquarter

Other Offices