linux.md

useful commands

getting kernel version of system

~$ uname (-a / -r / -v)(all, release, version)

ip information of system

~$ ifconfig ~$ ip addr show eth0 (specific iface)

disk space

~$ df -ah (all,human-readble)

managing services

~$ service s1 status ~$ systemctl status service

size of directory contents on disk

~$ du -sh dirname

open ports on system

~$ sudo netstat -tulpn

cpu usage of process

~$ ps aux | grep nginx ~$ top ~$ htop

managing mounts

linux has /mnt in root ~$ mount (shows existing mounts) ~$ mount /dev/sda2 /mnt (hw addr, mount point) ~$ cat /etc/fstab (mount at boot-time)