Linux again
- 1. Linux again written by t0spring
- 2. idx • Linux is • shell • command – File • ls – Network • admin command – Filesystem – User – Service • vi(m) editor
- 3. Linux is • Kernel first • Then with /lib/modules • Unix-like • string and file, not object • You are using one of distribution – Redhat – Debian – Slackware
- 4. shell • sh • csh, tcsh, ksh, bash • bash • Command processing • Scripting #!/usr/bin/env bash #!/bin/bash
- 5. command about File • ls • touch foo • echo hello > foo • echo world >> foo • cat foo • vi foo • rm foo
- 6. But ls • ls -ltr • ls -al • ls -lZ • ls -ltr | tail -10 • ls -l | grep httpd • ls -l | wc -l
- 7. command about Network • ifconfig • route • arp • netstat • ip addr • ip route • ip neigh • ss • ip a • ip r
- 8. admin command about Filesystem • df • du • mount • fdisk • mkfs • lvs • pvs • vgs • df -h • df -i • df -Pk • du –hs • du –hs | grep G • fdisk –l • smartctl –a /dev/sda • dmesg
- 9. admin command about user • useradd • usermod • userdel • groupadd
- 10. admin command about service • systemctl status httpd • systemctl start httpd • systemctl stop httpd • systemctl is-enabled httpd • systemctl is-active httpd
- 11. vi(m) editor • vim foo • alias vi=vim • :q! • i or a • :syntax on • :%s/foo/bar/gc • vi • :%s/foo/bar/ • dd • yy • p • ZZ
- 12. fine