Category: Basics

restarting/stopping/starting a service On any init.d based linux distro you can restart a service with the following… /etc/init.d/serviceName restart You may replace ‘restart’ with ’stop’ or ’start’ (and in some cases ’status’). Forcefully stopping a service killall processName Killing on instance of a service kill pid The pid can be gathered by either top or… Continue reading Service/Daemon Management

useradd useradd userName then run “passwd userName” to set the new users pw passwd passwd username will ask for the new pw twice

Listing Permissions ls -al will display all files in a list with their owners and permissions -rw-r–r– 1 irq13 irq13 1006 Jan 24 10:16 .bashrc Now to break down the above example… -rw-r–r– is the permissions area. The first – would be d if the item is directory, otherwise it will be -. The second… Continue reading File Permissions

ps | grep ssh — only display lines that contain ssh ; used to “stack commands” or issue multiple commands on 1 line. cd ..; ls & puts a command in the background. Will let you know when the command is finished > write what is displayed on the screen from a given command to… Continue reading Additional command operators

* whoami : displays current user * top : displays the top cpu/memory eaters and system load.. like task manager on windows * ps : displays all processes running.. ps aux is the most useful way to run it * wall “some text” : sends a broadcast message to all logged on users * man… Continue reading Basic commands

/ : root of the file system contains all devices and directory’s /root : the root users home directory /home : all other users home dirs reside in here /boot : All the kernels and boot specific info /tmp : temporary files are stored here, is commonly world writable so keep an eye on it… Continue reading File System

I see most of the people searching for basics on linux and found much difficult to get it in short. I have gathered some from a wiki and will add to this section. This might help some of you guys 🙂

if you want to know what version of PEAR you have, or simply just want to know if you have PEAR installed, simply run the following command in your linux box shell prompt: pear list Once you execute the command above, you should see something like this: Installed packages =================== Package Version State Archive_Tar 1.1… Continue reading How To Find What Version of PEAR Is Installed in your Linux Apache Server