Handy Linux Commands

Awesome commands that can make your work lot more simpler

if you wish to delete a file which is older than x minutes, you can use the below command

find . -type f -mmin +30 -delete

Run script in all directory

find . -type d -execdir /path/to/script.sh {} \;

you can also execute commands

How to sort the finded file based on Size

find . -type f -iname "*.$extension" -print0 | xargs -0 ls -lS

How to print all the file in Directory and separate by Line (============== )

find . -type f -exec cat -n {} \; -exec echo "==================================================" \;  

How to move particular files from one directory to other directory 

find . -iname "*.csv" -type f | xargs -I '{}' mv {} ~/data/csv

here we copy all csv file from current directory to ~/data/csv folder

Split single line into multiple lines

example:

I/p:

A,B,C,D,E,F,G,H,I,J,K,L,M,N,O

O/p:

A,B,C
D,E,F
G,H,I
J,K,L
M,N,O
 

 this can be done using

 tr , '\n' <filename | paste -d, - - -




Source: 

1.https://unix.stackexchange.com/questions/430089/how-can-i-run-script-for-all-directories
2.https://unix.stackexchange.com/questions/430106/delete-files-older-than-x-minutes
3.https://unix.stackexchange.com/questions/430381/order-all-files-by-size-using-find
4. example from Man page of find command and with few additional command to make it look better
5.https://www.cyberciti.biz/tips/howto-linux-unix-find-move-all-mp3-file.html
6.https://unix.stackexchange.com/questions/430550/split-single-line-into-multiple-lines-newline-character-missing-for-all-the-lin