Linux some of the more useful command collation

1. Auto Mount

Vi/etc/fstab

/dev/sdb1/mnt ext4 Defaults 0 0 automatically mounts the SBD1 under/MNT

2. modifying the Run level : 

Vi/etc/inittab

G --to the last line to modify, the number represents the run level

3. build the yum Warehouse

Vi/etc/yum.repos.d/rhel-source.repo

Modify: Delete last line

Gpgcheck=0

Enabled=1

baseurl=file:///mnt (Disc mount location)

4. Turn off the security system

Setenforce 0

5. Logical Volume expansion

Lvextend-l +200M/DEV/VG0/LV01

if Dh-ht See no change in size

Using RESIZE2FS/DEV/VG0/LV01

6. disk Quotas

Mount-o usrquota,grpquota/dev/vg0/lv01/tmp Mount Lv01 to/tmp

QUOTACHECK-CVUG/DEV/VG0/LV01 Detecting disk quotas

QUOTAON/DEV/VG0/LV01 Open

quotaon-p/dev/vg0/lv01 Check if successful

7. Install Setup network parameter configuration

Yum Install Setuptool

Yum Install System-config-network-tui

Setup Enter Configuration

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

Onboot=0

Ipaddr=

netmask=

gateway=

Save

Service Network Restart Restart the Nic

8. optimize boot entry

(1) Yum install Ntsysv

Ntsysv managing the current run level

NTSYSV--level Management level 3 , Level 5

(2) chkconfig-list View all services default startup status

chkconfig-list Network View Network Service default startup state

chkconfig--level Network off Close * level of Network Service

8. View the process

Ps-aux View Process

Ps-elf

Top Dynamic Refresh process State

pgrep-l "Network" View Network Service Process Information

CP/.. /    /.. /& background Run

jobs-l View processes running in the background

crtl+z Push The foreground running process into the background and hang

BG 1 to run the background suspend program in the background

FG 1 Push The background suspend program into the foreground to run

9. terminating the process

pgrep-l ".." First Query the program PID number

Kill (PID number ) Terminating Programs

kill-9 PID number Force Kill program

killall ( program name ) Terminating Programs

Pkill-u Specify user - T Specify Terminal

Ten , Scheduled Tasks

(1) Date View current date

date-s "2014-07-11 9:12:22" Modify the current time to 2014.7.11 9:12:22

At 14:55 Select Scheduled task time is today 14:55

which command name which root directory the query command belongs to

to make a scheduled task, use the absolute path of the command, such as /bin/echo "This is test" >/root/a.txt

ATQ Query A scheduled task that has been set but not yet executed

ATRM Scheduled Task number You can delete a specified scheduled task

(2) crontab Recurring Tasks

Cat/etc/crontab See which tasks are scheduled

crontab-eEdit a scheduled task (by points  when  Day  Month   Week  in order)

*  take value any time      

*/3     every 3 days / month / week

1-4 represents 1,2,3,4 , Continuous range

3,4,6,8 discontinuous Range

crontab-l View the list of scheduled tasks for the current user

Crontab-r Clear Scheduled Tasks

Crontab-u Specify which user's scheduled tasks to use for administrators to edit other users ' scheduled Tasks

This article is from the "Ne Road" blog, please be sure to keep this source http://332162926.blog.51cto.com/8831013/1440063

Linux some of the more useful command collation