SSH Cheatsheet

Server / Spec Checks

Checking the server memory (RAM) consumption:-

free -m

Checking the server HDD consumption:-

df -h

Checking the size of each top-level directories from a directory:-

du -h --max-depth=1 /path/to/directory/

Checking the server date/time:-

date

Checking Linux build/version:-

uname -a

Checking server operating system version:-

cat /etc/redhat-release

Basic Commands

Navigate to a particular directory:-

cd /var/www/vhosts/example.com/

List the contents of the current directory:-

ls

Edit a file:-

vi /etc/httpd/httpd.conf

Save and exit a file:-

:wq

Exit a file without saving:-

:q

Working with Files & Folders on the Linux Command Line

Creating Archives

Tar

Everything in current directory:-

tar cf filename.tar *

Everything in specific directory:-

tar -cf filename.tar directoryname/

Zip

Working with MySQL on the Linux Command Line

Exporting MySQL Database

mysqldump -u username -p database > filename.sql

You will be prompted to enter the password for the database user after entering the above.

Be sure to replace username with the database username, database with the name of the database and filename with whatever you wish to call the dump file.

Importing MySQL Database

mysql -u username -p database < filename.sql

Be sure to replace username with the database username, database with the name of the database and filename with whatever the name of the dump file you’re importing is.