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Convert decimal to base 36 alpha numeric in Bash | Linux

Published by Nicholas Dunbar on February 9th, 2014

Here is a custom bash shell script function you can use to convert a decimal to a base 36 number in all capital alpha numeric. Example: your_digit=65; decimal_to_base36 $your_digit; Output: 1T function decimal_to_base36(){ BASE36=($(echo {0..9}...

List all users on a server

Published by Nicholas Dunbar on August 22nd, 2013

User information is stored in the /etc/passwd file [username@localhost /]$ awk -F":" '{ print $1 }' /etc/passwd If you want to print out the user name and UID: [username@localhost /]$ awk -F":" '{ print $1 "\t\t"$3 }' /etc/passwd | column -t Here is ...

linux command-line bash

Pad a string with a character | Fill in empty space with repeating character in bash

Published by Nicholas Dunbar on June 25th, 2013

If you want to pad a string so that the string is always the same length, but if a string that is smaller than the required length is used the excess space is filled with a defined character so that the string maintains the correct spacing. For exampl...

programming linux bash

Copy all files a user owns off of remote server

Published by Nicholas Dunbar on March 12th, 2013

This is for copying files from a Linux machine to a local Linux machine. user@localhost the_directory> ssh user_name@remote_domain.com 'cd /dir/you/want/to/copy/; find `pwd` -user user_name' | xargs -I{} scp user_name@remote_domain.com:{} `pwd` This...

linux command-line bash

Shell script that makes it so you don't need a password to login to a Linux server.

Published by Nicholas Dunbar on March 6th, 2013

Tested for Red Hat Linux 6.0 Bash Shell sh-4.1 This script only works if the username on your the box where you install the script is the same as the username on the remote box to which you which to connect. If you want to use a different user on each...

linux bash

Convert string to list of ASCII codes in bash

Published by Nicholas Dunbar on February 10th, 2013

If you want to take a string and get the ascii code for each character in the string using a bash script then use the following function: function string2ascii_codes { str=$1; list=($(echo $str|sed 's/$.$/\1 /g')); ascii_result=''; ...