Miscellaneous Linux Commands

Shell Commands

Display all network interface names on any Linux system from the shell:

/sbin/ifconfig | grep BROADCAST | cut -d " " -f1 | sed 's/.$//' 

Most Linux machines will only display one network interface, such as shown on my Slackware 14.1 Virtual Machine Server:

eth0 

Other systems may have more than one, such as those with virtual machine software. Sample output from my Fedora 20 (Heisenbug) VirtualBox server:

em1
virbr0

And here is a sample output from my Fedora 17 (Beefy Miracle) laptop running VMWare:

p5p1                                                                           
vmnet1                                                                         
vmnet8

The "ps" Process Command Syntax

To show all executing processes:

$ ps ax

To show all processed running by a specific user(This example shows all processes running by the Apache WebServer):

$ ps -U apache