Linux operation and maintenance of the way of the admin command list (more than a few)

Admin Basic Command List

Full command format: Command word-option parameter

#pwd #查看当前工作目录

#cd #切换进去

#ls #查看所有文件 (under current directory)

#cat #查看文本文件

#uname-R #列出内核版本

#cat/proc/meminfo #查看内存

#lscpu #查看cpu

#ifconfig #列出已激活的网卡连接信息

#poweroff #关机

#reboot #重起

#mkdir XXXX #创建目录

#touch XXXX #创建文本文档

#alias myls= ' ls-ld ' #创建别名
#unalias Myls #取消别名
#rm XXXX #删除
#mv #重名命, path-invariant movement
#cp #复制, copy

[[email protected] ~]# rht-vmctl Reset Server #重置虚拟机server
[Email protected] ~]# ssh-x [email protected] #真机访问server (can be set to alias)
--------------------------------------------------------------------------------------------------------------- -------
Case: Mount Operation
1) Connect disc/iso/rhel-server-7.2-x86_64-dvd.iso
[[email protected] ~]# mount/dev/cdrom/mnt//Mount device
Mount:/dev/sr0 write protection, will be mounted as read-only
2) Mount the disc to the/MNT directory and check the contents of the/MNT directory
[[email protected] ~]# ls/mnt//Access device content
3) Unmount the disc device and check the contents of the catalog again
[[email protected] ~]# Umount/mnt/dvd//Uninstall device
[[email protected] ~]# LS/MNT/DVD//Confirm result
--------------------------------------------------------------------------------------------------------------- -------
A case of a list of operations
[Email protected] ~]# ls/etc/re*.conf

[Email protected] ~]# Ls/dev/tty?
--------------------------------------------------------------------------------------------------------------- --------
Case: Network configuration
#nmcli con mod ' System eth0 ' ipv4.method manual ipv4.addresses
' 172.25.0.11/24 172.25.0.254 ' Connection.autoconnect Yes
Manually specifying a DNS server
#vim/etc/resolv.conf
NameServer 172.25.254.254
--------------------------------------------------------------------------------------------------------------- --------
case: Configuring the Yum repository
#vim/etc/yum.repos.d/rhel7.repo
[ABC]
Name=abc
Baseurl= Address
Enabled=1
Gpgcheck=0
#yum repolist View Yum
--------------------------------------------------------------------------------------------------------------- -------
case: Upgrading the kernel
1: Download the new kernel installation file
[Email protected] ~]# wget
-3.10.0-123.1.2.el7.x86_64.rpm
2: Install the new version kernel
[Email protected] ~]# RPM-IVH kernel-3.10.0-123.1.2.el7.x86_64.rpm
3: Confirm the new kernel version
[Email protected] ~]# uname-r

--------------------------------------------------------------------------------------------------------------- -------------

case: Find and copy

1. Confirm that the specified file can be found

[[email protected] ~]# Find/-user student-type F
2. Create a destination folder
[Email protected] ~]# Mkdir/root/findfiles
3. Copy the found files to the destination folder
[[email protected] ~]# Find/-user student-type f-exec cp-p {}/root/findfiles/\
4. Confirm the copy result
[Email protected] ~]# ls-lha/root/findfiles/
case: Finding and extracting
1) Use the grep command to find the specified keyword and save it to the specified file by redirecting the output:
[[email protected] ~]# grep ' seismic '/usr/share/dict/words >/root/wordlist
2) Confirm Extraction Results
[Email protected] ~]# cat/root/wordlist

This article is from the Linux OPS blog, so be sure to keep this source http://13401400.blog.51cto.com/13391400/1977049

Linux operation and maintenance of the way of the admin command list (more than a few)