Interesting Linux Programs

wipe: It is a secure file wiping utility 

shred: Delete a file securely, first overwriting it to hide its contents. 

autokey:  text replacement tool

blat:  Send emails from the command line

wget:  download files from the command line
 

tcpdump: a powerful command-line packet analyzer

ngrep:  strives to provide most of GNU grep's common features, applying them to the network layer. ngrep is a pcap-aware tool that will allow you to specify extended regular or hexadecimal expressions to match against data payloads of packets. It currently recognizes IPv4/6, TCP, UDP, ICMPv4/6, IGMP and Raw across Ethernet, PPP, SLIP, FDDI, Token Ring and null interfaces, and understands BPF filter logic in the same fashion as more common packet sniffing tools, such as tcpdump and snoop.

Snippits: This is Ruby program that will type text for you. It uses 'snippits', small text files with a simple syntax to determine what to type

dmidecode: Typing sudo dmidecode into a terminal will give you a giant list of information about your machine that you can browse through, or you can use the -s flag and a keyword to get a specific piece of information.

MTR:

MTR isn’t your father’s Traceroute. It’s the ultimate command line tool for finding out where those tasty little packets are getting lost. From bash issue mtr –report-wide –curses and your destination of choice.

mtr –report-wide –curses 8.8.8.8

MTR will bring up a curses terminal interface with a constantly updating report on hops and pings, complete with hostname, best and average latency, and percentage of packets lost at each link.