Commands by toto1234 (0)

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Recompress all .gz files in current directory using bzip2 running 1 job per CPU core in parallel

intersection between two files

Check the age of the filesystem
Very useful set of commands to know when your file system was created.

Center text in console with simple pipe like
Center the output text in max line length of buffered output pipe;

What is my ip?

Get your local IP regardless of your network interface
Shows only IP-addresses of ifconfig except 127.0.0.0/8. I fixed the script to work on more systems and configs short info /inet/!d; #grep inet /127.0/d; # grep -v 127.0 /dr:\s/d; # grep -v dr: s/^.*:\(.*\)B.*$/\1/ # remove everything exept between : and B

Monitor system load and print out top offending processes
This checks the system load every second and if it's over a certain threshold (.8 in this example), it spits out the date, system loads and top 4 processes sorted by CPU. Additionally, the \a in the first echo creates an audible bell.

mtr, better than traceroute and ping combined
mtr combines the functionality of the traceroute and ping programs in a single network diagnostic tool. As mtr starts, it investigates the network connection between the host mtr runs on and HOSTNAME. by sending packets with purposly low TTLs. It continues to send packets with low TTL, noting the response time of the intervening routers. This allows mtr to print the response percentage and response times of the internet route to HOSTNAME. A sudden increase in packetloss or response time is often an indication of a bad (or simply over‐loaded) link.

Binary digits Matrix effect
Prints 0's and 1's in The Matrix style. You can easily modify to print 0-9 digits using $RANDOM %10 insted of %2.

Define a quick calculator function
defines a handy function for quick calculations from cli. once defined: $ ? 10*2+3

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