Redhat Linux Command Detailed introduction __linux

A. Start, shutdown, login, log out related commands

<login> Login

<logout> Log Out

<exit> Log Out

<shutdown> Stop System

<reboot> reboot

<poweroff> Power off

<sync> write the contents of memory to disk

<lilo> Install Lilo startup management Program

<grub> Install Lilo startup management Program

two. Shell-related commands

<chsh> Switch Shell

<alias> set Command alias

<unalias> Cancel Command Alias

<which> Show where the command is located

<type> Query Command type

<echo> display string or variable contents

<set> set/Show Shell variables

<printenv> Display Environment variables

<export> Setting Environment variables

<env> Setting TEMP Environment variables

<unset> Releasing environment variables

<setenv> Setting Environment variables

<unsetenv> Releasing environment variables

<source> implementation of the order in the document

<man> Search Command Manual

<info> Query Hypertext Command Manual

Introduction to <whatis> Display commands

<apropos> Search Manual by keyword

three. User Management related commands

<su> Switch to another user

<useradd> Additional users

<adduser> Additional users

<userdel> Delete Users

<usermod> Modify user Settings

<chfn> Modify user's personal information

<groupadd> Append Group

<groupdel> Delete Group

<groupmod> Modify Group settings

<passwd> Change Password

<whoami> Display user Name

<logname> Display Login user account

<users> Display all login user information

<who> Query Login User Information

<w> Query Login User Information

<id> Display ID information for the specified user

<groups> show groups of specified users

<finger> display personal information for a specified user

<mesg> switch to send and receive messages with others

<write> send messages to other users

<wall> send messages to all users

<talk> Chat with other users

four. System Message related commands

<date> Show/Set Current time

<uptime> Display System Running time

<arch> Display the core architecture of the machine (e.g. i386)

<uname> Display operating System Information

<tty> Display terminal name

<last> Show Login/logout in resume

<lastb> Display Illegal login information

<dumpkeys> Display current keyboard configuration

<loadkeys> Change keyboard configuration

<df> Query Disk usage information

<du> Query Disk usage information

<dmesg> Show system Startup messages

<script> save input and output to file

Five. File Operation related command

<ls> Display file list

<tree> Display directory tree

<pwd> Show Current Path

<cd> Change Current path

<pushd> append path to directory stack

<popd> remove path from directory stack

<dirs> Display the contents of the catalog stack

<mkdir> Create Path

<rmdir> Delete Path

<cp> Copy files/directories

<rm> Delete files/directories

<mv> Move files/directories, modify file names

<chown> change the owner of a file/directory

<chgrp> modify all groups of files/directories

<chmod> modify File/directory permissions

<touch> Change file time

<ln> Create File/directory Links

<find> Find Files

<whereis> shows the path name where the file exists

<file> Query File types

<size> Query File size

Six. File Edit related commands

<cat> Display file contents

<tee> output to files and screens

<more> Screen Display file contents

<less> Screen Display file contents

<tail> display the tail content of the file

<fold> collapse Display long line

<sort> arrange the rows of files

<cmp> Compare file Contents

<diff> Show file differences

<nkf> Change Japanese file encoding

<dd> Copy after change file

<wc> statistics Text Word number, file size, etc.

<split> Split File

<paste> Connect files with rows

<join> Connect files with fields

<grep> Query Text

<uniq> Filter Repeat section to display file contents

<tr> Alternate text

<sed> Alternate text

Seven. Compression/decompression Related commands

<ar> Compressed/uncompressed files

<tar> Compressed/uncompressed files

<compress> Compressed/uncompressed files

<uncompress> Decompression

<gzip> Compressed/uncompressed files

<gunzip> Decompression

<zcat> Display the contents of a compressed file

<lha> Compressed/uncompressed files

<uuencode> encode binary files as text files

<uudecode> Restore encoded text files to binary files

　Eight. MS-DOS tool Set [mtools] command

<mdir> Display file list

<mcd> Change Current directory

<mmd> New Directory

<mrd> Delete Directory

<mdeltree> Delete directory tree

<mcopy> Copy Files

<mdel> Delete Files

<mmove> Moving files

<mren> change file or directory name

<mattrib> Modify File properties

<mtype> Display file contents

<mdu> query file or directory size

<minfo> Display disk Information

<mformat> format disks in MS-DOS mode

<mlabel> Set Disk label

　Nine. Control the external equipment related command

<mount> mount on Equipment

<umount> lifting equipment already on Mount

<eject> Eject (CD/DVD, etc.)

<fdformat> Format Floppy disk

<fdisk> Configure/Display hard disk partitions

<mkfs> Format Disk Partitions

<fsck> Check/Repair Disk errors

<lpr> Print to Printer

<lprm> Interrupt Print Task

<lpq> Show status of print tasks

<lpc> Management/Control printing tasks

<ifconfig> Show/Set NIC configuration

　10. Process and task management related commands

<ps> Show the running process

<jobs> Show background Run tasks

<fg> switch the task to the front desk

<bg> switch the task back to the background

<kill> abort a process or task

<killall> abort a process or task

<wait> wait for the end of a process or task

<at> Set timed Tasks

<atq> show tasks that have not yet been performed

<atrm> Delete timed Tasks

<batch> perform tasks when system load is reduced

<nice> change priorities and perform tasks

<nohup> in the background to perform the task, logout do not quit after

<sleep> sleep a certain amount of time

　11. Network Management related commands

<netstat> Show current network connection status

<route> Show/Set Routing

<ping> confirm the connection with the remote machine

<traceroute> Display Routing Information

<rwho> Search users of online machines

<ruptime> Query the system running time of the online machine

<rlogin> Login to remote machine

<telnet> Login to remote machine with Telnet

<rsh> send commands to remote machines

<rcp> copying files between remote machines

<mail> Receive mail

<sendmail> Send mail

<mailq> Confirm message queues

<ftp> Transfer files using FTP

　12. Other Orders

<cal> Display Calendar

<clear> Clear Screen

<gcc> Compiling C language code

<as> Assembly

<bc> calculation

<rpm> Redhat Package Management

<dpkg> Package management for Debian

<installpkg> Slackware Package Installation (delete command is removepkg)

<XF86Setup,turboxfg,Xconfigurator> Configure X Server

<startx> Start X-window System

Attached: Combination command

redirection, such as

$ ls-l/bin > Ls-output

$ more Ls-output

Pipe commands, such as

$ Cat File1 File2 | Sort | Uniq