Commands by sagarsakre (1)

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move cursor to beginning of command line
Pressing Ctrl combined with 'a' will move the cursor to the beginning of the command under bash (other shells?). I used to do this after arrowing up for the last command, then typing 'sudo ' to run the last command as root, but of course the all time greatest command here `sudo !!` is more succinct. Still Ctrl+A can be very useful when you want to edit something at/close to the beginning of the command line.

function to compute what percentage of X is Y? Where percent/100 = X/Y => percent=100*X/Y
This function make it easy to compute X/Y as a percentage. The name "wpoxiy" is an acronym of "what percentage of X is Y"

Watch active calls on an Asterisk PBX

use wget to check if a remote file exists
put your link [url] to check if exist the remote file

Check if system is 32bit or 64bit
Needed a quick way to see if my server distro that I setup years ago was running 32bit or not, since with time I had forgotten. Note: does not check _hardware_ e.g. /proc/cpuinfo but rather the kernel installed

MySQL dump restore with progress bar and ETA
Display a progress bar while restoring a MySQL dump.

Get shellcode of the binary using objdump
Anyone can make the command smaller & easier? :)

check web server port 80 response header

Delete backward from cursor, useful when you enter the wrong password

get all Google ipv4 subnets for a iptables firewall for example

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