Linux OPS 1, Chapter 2

Pwd-p returns the true path of the link

Cd/usr/src

Cd..

CD-

CD Home

Ls-al

Ls-ld/root

Ls-lt

Cp/etc/hosts/tmp/host

Cp-r/var/log//tmp

Find-name Hello.doc

Find/root-name "*.log"

Find-iname "Jacob"

Find/-empty

Find/-group Tom

Find/-mtime-3

Find/-mtime +4

Find/-mtime 2

Find./-size +10m

Find./-type F

Find./-user Tom

Find./-size +1m-exec ls-l {} \;

Find/-size +1m-a-type F

Du-sh

Cat-n/etc/passwd

Cat-b/etc/passwd

Head-c 20k/root/install.log

Tail-f/var/log/messages

Wc-l

-W

-C

grep--color th Test.txt

Grep-i the Test.txt

Grep-w Num test.txt

Grep-v the Test.txt

echo "Hello World."

Echo-e "\ \"

\\

\ n

\ t

Ln-s/test//var/test/

Ln/test/hello.txt/test/hi.txt

Gzip Hell.txt

Gzip-d hello.txt.gz

Bzip2 Hello.txt

Bzip2-d hello.txt.bz2

TAR-CF etc.tar/etc

Tar-czf Boot.tar.gz/boot

TAR-CJF etc.tar.bz2

TAR-TVF boot.tar.gz

TAR-XVF Etc.tar

Tar-xzf boot.tar.gz

TAR-XJF etc.tar.bz2

TAR-XZF BOOT.TAR.GZ-C/tmp

History

!500

Ctrl+l Clear

which find

Vim Editor

A A

I I

o O

Gg

G

NG

^ $

W b

X

Dd

Ndd

Rx

Yy

P

P

/host N N

: s/root/admin/

: s/root/admin/g

: 3,5s/root/admin/g

:%s/nologin/fault/g

: Set Nu

: Split

Ctrl+w +l

+j

: Vsplit

Ctrl+w+h

+l

Useradd-c administartor-d/home/admin-e 2013-12-24 \

-G root-g bin,adm,mail Admin

Useradd-s/sbin/nologin-m User2

Groupadd-g Jerry

ID Root

echo "123456" | passwd--stdin Tom

Passwd-l Tom

Passwd-u Tom

Passwd-d Tom

usermod-d/home/tom Tom #/home/tom exists

USERMOD-E 2013-12-24 Tom

USERMOD-G Mail Tom

Usermod-s/bin/bash Tom

Usermod-u 1001 Tom

Userdel-r Tom

Groupdel Jerry

chmod A=RW Install.log

chmod a+x Install.log

chmod 644 Install.log

chmod--reference=install.log.syslog Install.log

Chown:root Install

Account Management Case

Mkdir-p/var/{teach,office}

Groupadd teach

Groupadd Office

Useradd-g Teach Op_teach

USERADD-G Office Op_office

Useradd-g Teach Endy

Useradd-g Office Lucy

Gpasswd-a Op_teach teach

Gpasswd-a Op_office Office

chmod Op_teach.teach/var/teach

chmod Op_office.office/var/office

chmod 755/var/{teach.office}

Fdisk-l

Fdisk/dev/sda

Partprobe/dev/sda

Mkfs.ext4/dev/sdc1

Mkswap/dev/sdc2

Mount/dev/cdrom/media

Umount/dev/cdrom

Vim/etc/fstab

Mount-a

Create raid

(fdisk FD)

Mdadm-c/dev/md0-l 0-n 3/DEV/SDB1/DEV/SDC1/DEV/SDD1

Mdadm-c/dev/md5-l 5-n 3-x 1/dev/sdb2/dev/sdc2/dev/sdd2/dev/sde2

Mdadm--detail/dev/md0

Mdadm--DETAIL/DEV/MD5

Mkfs.ext4/dev/md0

echo "Device/dev/sdb1/dev/sdb2/dev/sdc1/dev/sdc2/dev/sdd1/dev/sdd2/dev/sde2" >/etc/mdadm.conf

Mdadm-evs >>/dev/mdadm.conf

echo "/dev/md0/raid0 ext4 defaults 0 0" >>/etc/fstab

echo "/dev/md0/raid0 ext4 defaults 0 0" >>/etc/fstab

Time DD If=/dev/zero of=txt bs=1m count=1000

RPM-IVH ftp-0.17-51.1.el6.x86_64.rpm

RPM-E FTP

Rpm-q FTP

Rpm-aq

Rpm-qi Bash

RPM-QL Bash

RPM-QC Bash

Rpm-qf/etc/inittab

Rpm-qpi ftp-0.xxxxxxxxxxxx.rpm

/etc/yum.repos.d/media.repo

[Media]

name=centos=6.7

Baseurl=file:///media/centos-6.3_final

Enable=1

Gpgcheck=0

gpgkey=

Yum Install Dialog

Yum-y expect

Yum Remove Dialog

Yum List

Yum Clean All

Yum Grouplist

Yum Groupintall "Chinese support"

Yum-y intall gcc pcre pcre-devel libtool

TAR-XJF httpd-2.2.23.tar.bz2-c/usr/src/

TAR-XZF apr-1.4.6.tar.gz-c/USR/SRC

cd/usr/src/apr-1.4.6/

./configure && make && make install

cd/usr/src/apr-util-1.5.1

./configure--WITH-APR=/USR/LOCAL/APR

Make && make install

...

/usr/local/apache2/bin/apachectl start

Date-s "2012-11-12 14:00"

Hwclock-w

Service sshd Reload

Chkconfig--list

Chkconfig--list sshd

Chkconfig--level-sshd off

Chkconfig sshd on

Service ATD Start

At 23:11

TAR-CJF Log.tar.bz2/var/log

Shutdown-h now

At-l

At-c 1

At-d 1

Service Crond Start

Chkconfig Crond on

Crontab-e

* TAR-CZF Log.tar.gz/var/log

XX */3 * * * WHO

Crontab-l

Crontab-r

/etc/cron.d

/etc/cron.hourly

/etc/cron.daily

/etc/cron.weekly

Uptime

free [-b|-k|-m]

Df-ht

Df-i

Ifconfig

Netstat-nutlp

Ps-e

Ps-ef

Top

M memory N PID Z Highlight

Top-d 1-p

Ifconfig eth0 192.168.0.31 netmask 255.255.255.0

Ifconfig eth0 Down

Ifconfig eth0 up

Hostname

Hostname centos.example.com

Hostname-i

Route

Route-n

Route add default GW 192.168.0.254

Route add-net 172.16.0.0/16 GW 192.168.0.254

Route add-net 192.56.76.0 netmask 255.255.255.0 Dev eth0

Route del default GW 192.168.0.254

Route Del-net 172.16.0.0/16

Cat/etc/sysconfig/network-scripts/ifcfg-eth0

Device= "

bootproto= "Static"

Hwaddr= "

Nm_controlled= "

Onboot= "

Type= "

Ipaddr= "192.168

prefix= "24"

Gateway= "192.168.0.254"

dns1= "202.106.46.151"

Service Network restart

Vim/etc/sysconfig/network-scripts/route-eth0

Service Network restart

Ping

Traceroute

Traceroute-i www.google.com

Nslookup www.google.com

Dig www.google.com

Netstat-an

Netstat-nutlp

/lib/modules/' uname-r '/

Lsmod

Modprobe Ip_vs

Lsmod | grep Ip_vs

Modprobe-r Ip_vs

Modinfo Ip_vs

echo "Modprobe ip_vs" >>/etc/rc.sysinit

echo "1" >/proc/sys/net/ipv4/ip_forward

echo "1" >/proc/sys/net/ipv4/icmp_echo_ignore_all

echo "108248" >/proc/sys/fs/file-max

Vim/etc/sysctl.conf

Net.ipv4.ip_forward = 1

Net.ipv4.icmp_echo_ignore_all = 1

Fs.file-max = 108248

Linux OPS 1, Chapter 2