Frequently Used Linux Commands

(and yet we cant remember the exact command)

• Tar tgz: tar -czvf abc.tgz /path/to/folder
• Untar tgz: tar -zxvf myfile.tgz
• Create softlink: ln -s filepath link
• Look for huge folder:

du -h ./ | sort -rh

## larger than 1GB only
du -h -t 1G ./ | sort -rh

• merge file into 1 line delimited by comma: cat myfile.txt | awk '{print}' ORS=','
• extract only line appear in left file: comm -23 left.txt right.txt
• delete all files recursively, keep folders: find . -type f -delete
• delete jpeg files older than 1 days recursively: find /path/to/files* -mtime +1 -type f -name '*.jpeg' -delete