Linux Operations Common Commands summary

First, online inquiry and help command

1.man: View command Help

2.help: View Help for Linux built-in commands

Second, file and directory Operation command:

1.pwd: View current directory

2.CD: Switch Directories

3.tree: Display the contents of the directory in a tree-shaped structure

4.mkdir: Create a directory

5.touch: Create an empty file or change the timestamp property of a file

6.ls: Display the contents of the directory and related property information

7.CP: Copying Files or directories

8.MV: Move or rename files

9.RM: Delete files or directories

10.rmdir: Delete Empty directory

11.LN: Hard links or soft links

12.readlink: View the contents of a symbolic link file

13.find: View the files in the directory

14.xargs: Convert standard input to command line parameters

15.rename: Renaming files

16.basename: Show file name or directory name

17.dirname: Show file or directory path

18.chattr: Changing the file's extended properties

19.lsattr: View File extension properties

20.file: Show File types

21.md5sum: Calculating and verifying the MD5 value of a file

22.chown: Users and user groups that change files or directories

23.chmod: Change file or directory permissions

24.CHGRP: Change the user group to which files and directories belong

25.umask: Set the mask to restrict new file permissions

Third, file backup and compression command

1.tar: Packaged Backup

2.gzip: Compress or unzip files

3.zip: Packaging and compressing files

4.unzip: Unzip the zip file

5.SCP: Remote file copy

6.rsync: File Sync Tool

Iv. file filtering and content editing processing commands

1.cat: Merging files or viewing file contents

2.TAC: Reverse Display of file contents

3.more: Paging Displays the contents of the file

4.less: page display of file contents

5.head: Show file contents header

6.tail: Display file content trailer

7.TAILF: trace log file

8.cut: Extracts a paragraph of text from a literal and outputs

9.split: Split file

10.paste: Merging Files

11.sort: Text Sorting

12.join: Merge by same field of two files

13.uniq: Remove Duplicate rows

14.WC: Number of rows, words, or bytes of a statistic file

15.ICONV: Encoding format for converted Files

16.dos2unix: Convert dos format files to UNIX format

17.diff: Compare the differences between two files

18.vimdiff: Visual comparison Tool

19.rev: Reverse Output file contents

20.tr: Replace or delete characters

21.od: Display files according to different binary

22.tee: Multi-directional

23.vi/vim: Plain Text editor

V. Information display and search file commands

1.uname: Display System Information

2.hostname: Displays or sets the system host name

3.DMESG: System Boot Exception diagnostics

4.stat: Show file or file system status

5.DU: Statistics on disk space usage

6.date: Display and set system time

7.echo: Display a line of text

8.watch: Monitor the execution of the command

9.which: Displays the full path of the command

10.whereis: Show command and its associated file full path

11.locate: Quickly locate file paths

12.updatedb: Update mlocate database

Vi. User Management and user information inquiry

1.useradd: Create User

2.usermod: Modify user Information

3.userdel: Delete User

4.groupadd: Create a user group

5.groupdel: Delete user groups

6.PASSWD: Modify User Password

7.chage: Modify User Password

8.CHPASSWD Modify user Password validity period

9.SU: Switch User

10.visudo: Edit Sodoers file

11.sudo: Execute command as another user

12.id: Display user and user group information

13.W: Show logged in user information

14.who: Show logged-in user information

15.users: Show logged in user

16.whoami: Displays the currently logged in user name

17.last: Show User Login list

18.LASTB: Displays a record of user logon failures

19.lastlog: Displays the most recent login record for all users

Seven, network operation

1.telnet: Telnet

2.ssh:ssh encrypted Telnet

3.SCP: Copying files between different hosts

4.wget: Remote Download file

5.ping: Detection of connectivity between hosts

6.route: Show and set the routing table for Linux servers

7.ifconfig: View, configure, start or disable interfaces

8.IFUP: Start the network card

9.ifdown: Disable NIC

10.dig: Find DNS resolution process

11.mail: Send and receive messages

12.mutt: Mail Management commands

13.nslookup: Interactively querying DNS servers

14.lsof: List current system open files

15.nmap: Network scanning and sniffing

16.tcpdump: Grab Bag

Eight, disk partitioning tools

1.disk: Disk Partitioning tool

2.partprobe: Update the kernel's hard disk partition table information

3.TUNE2FS: Adjusting EXT2/EXT3/EXT4 file System Information

4.parted: Disk Partitioning tool

5.MKFS: Creating a Linux file system

6.DUMPE2FS: Exporting Ext2/ext3/ext4 file System Information

7.RESIZE2FS: Adjusting EXT2/ETX3

Nine, system management and monitoring

1.top: View the overall operation of the system in real time and dynamically

2.free: Shows the number of unused and used memory for the current system

3.vmstat: Show Virtual memory status

4.mpstat: real-time system monitoring

5.iostat: Monitoring System Disk Utility

6.sar: System Activity Status Report

7.kill: Remove a program or work in execution

8.chkconfig: Run-level information used to update (start or stop) and query system services

9.last: Display user's most recent login information

Memory: Top,free,vmstat,mpstat,iostat,sar
Cpu:top,vmstat,mpstat,iostat,sar
I/o:vmstat,mpstat,iostat,sar
Process: IPCS,IPCRM
Load: Uptime

X. The three musketeers of text processing

1.grep: Text Filtering tool

2.sed: Character Stream editor

3.awk: Text Processing tool

According to << and old boys learn Linux operations: Core system command Combat >> Summary changed some, then the detailed options and operations of each command to remember

Linux Operations Common Commands summary