General Linux notes

Below are some useful Linux commands.

To mount a ramdisk:

mount -t tmpfs none /mnt/point

This is a cool way to share  command line session with someone on a Linux box:

1) make the remote user run screen

2) run screen -x

using the procedure, 2 people can collaborate, and type together in the same terminal on a linux machine where 1 or both of the people are remotely sshed in and not sitting in front of the computer.

Netcat is a cool program. It is a hacker's "Swiss Army Knife" essentially, all it does it open a network connection to the specified host at the specified port, and write data. Here's a way to transfer files without setting up SMB/sftp/ftp/whatever else:

push from sending side: cat backup.iso | nc 192.168.0.1 3333

receive on receiving side: nc -l 3333 > backup.iso

Set a static IP on your linux machine from the command line?:

ifconfig eth0 192.168.10.253 dstaddr 192.168.10.1 netmask 255.255.255.0 up

Backup local files to an rsync server:

rsync -avzPi --stats -e ssh <local files or folders> USER@IPADDRESS:<remote folder>

set system time from the command line:

date <date/time code>     //sets the OS time

/sbin/hwclock --systohc   //write the OS time to hardware