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Find default gateway

list files recursively by size

Find total Terabytes written to a SSD
You must have smartmontools installed for this to work. This also assumes you 512 byte sector sizes, this is pretty standard.

Rip a DVD to AVI format
Substitute whatever track number you want into the "dvd://1" parameter. The "-aid 128" is to select the English language.

Delete all non-printing characters from a file
tr has some predefined sets of characters that are more convenient to use than characters codes

Ruby - nslookup against a list of IP`s or FQDN`s
This version uses host and no ruby.

Check if *hardware* is 32bit or 64bit
This command tell you if your hardware is 32 or 64 bits even if you install a 32bits OS on a 64 bits hardware. If your distro don't support the -q switch, try doing : $ grep &>/dev/null '\' /proc/cpuinfo && echo 64 bits || echo 32 bits

find the path of the java called from the command line
The output will likely point to '/etc/alternatives/java'. So find out where that points by issuing ls -l like this: ls -l /etc/alternatives/java

Short Information about loaded kernel modules

Console clock
Shows a simple clock in the console -t param removes the watch header Ctrl-c to exit


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