CLI Utils

Rename files to lowercase:

• rename -f 'y/A-Z/a-z/' *

Find file size:

• ls -lhS
• du -sh *
• df -h .
• du -h --max-depth=1 | sort -hr

Monitoring:

• iostate
• iotop -u www-data
• top -u www-data
• htop -u www-data

Manage Processes

• fg jobid
• bg jobid
• jobs
• pkill -9 php

Make a big file:

• fallocate -l 100M bigfile

Manage directories

• pushd /home/Downloads
• dirs -v
• cd ~0

Rsync:

rsync -aP --exclude="*" --include="201[1-8]/" --include="201[1-8]/*" --include="201[1-8]/*/*" --omit-dir-times  /source /dest

NSLoookup:

nsloopup
>  https://example.com