Linux commands for WEB developers

Copy a folder

cp -avr /home/cool_site_folder /var/www/cool_site_new_folder_name

1	cp -avr /home/cool_site_folder /var/www/cool_site_new_folder_name

What port is used?

netstat -tulpn | grep php-fpm

1	netstat -tulpn \| grep php-fpm

Find and delete files greater than a given size

find . -size +1M -exec rm -i {} \;

1	find . -size +1M -exec rm -i {} \;

Find out directories using disk space

du -cksh /var/* | sort -rn | head

1	du -cksh /var/* \| sort -rn \| head

Find a file

sudo find / -name 'php.ini'

1	sudo find / -name 'php.ini'

Sorting ls command output by file size

ls -Slh

ls -Slh

to reverse order use -r option.

Archive directory

tar -zcvf my-dir.tar.gz /home/user/my-dir

1	tar -zcvf my-dir.tar.gz /home/user/my-dir

Copy files from remote to local with Rsync

rsync -razP user@remote-server.com:~/home/remote-user/file.cpp /home/local-user/

1	rsync -razP user@remote-server.com:~/home/remote-user/file.cpp /home/local-user/

File permissions

chmod 755 nginx.conf

1	chmod 755 nginx.conf

Change permission of file.

4 – read (r)
2 – write (w)
1 – execute (x)

order: owner/group/world

eg:
755 – rwx for owner, rx for group and world

List directory files sorted by time

# Sort by newest files first
ls -laht

# Sort by oldest files first
ls -lahtr

# Sort by newest files first

ls -laht

# Sort by oldest files first

ls -lahtr

October 19, 2017