Common Mac commands

ArticleDirectory

• Basic commands

Basic commands

1. List objects
Ls parameter directory name
For example, see what is in the driver directory:
Ls/system/library/extensions
Parameter-W displays Chinese characters,-l details,-A includes hidden files

2. Convert the directory CD
For example, think of a loop in the driver directory.
CD/system/library/extensions

3. Create a new directory
Mkdir directory name
For example, create a backup directory backup under the driver directory.
Mkdir/system/library/extensions/backup
Create a backup directory backup on the desktop
Mkdir/user name/desktop/backup

4. Copy an object
CP parameter source file target file
For example, you want to copy the natit. kext file on the desktop to the driver directory.
CP-r/user name/desktop/natit. kext/system/library/extensions
The R parameter indicates recursive operation on the directory. kext looks like a file on the GUI, but actually a folder.
Back up all files in the driver directory to the desktop backup
CP-r/system/library/extensions/*/user name/desktop/backup

5. delete an object
Rm parameter file
For example, you want to delete the driver cache.
Rm-RF/system/library/extensions. kextcache
Rm-RF/system/library/extensions. mkext
Parameter-RF indicates recursion and force. Be careful when using this parameter. If you run Rm-RF/your system, it's all gone.

6. Move files
MV File
For example, you want to move applehda. kext to the desktop.
MV/system/library/extensions/applehda. kext/user name/desktop
I want to move applehda. kext to the backup directory.
MV/system/library/extensions/applehda. kext/system/library/extensions/backup

7. text editing
Nano file name
For example, edit natit info. plist.
Nano/system/library/extensions/natit. kext/info. plist

Directory operations

Command name
; Function Description
Example

Mkdir
; Create a directory
Mkdir dirname

Rmdir;
Delete a directory
Rmdir dirname

Mvdir;
Move or rename a directory
Mvdir dir1 dir2

CD
Change current directory
CD dirname

PWD
Display the path name of the current directory
PWD

Ls
Display the content of the current directory
Ls-la

File Operations

Command name
Function Description
Example

Cat
Display or connect files;
Cat filename

Od
Show non-text file content
Od-C filename

CP
Copy a file or directory;
CP file1 file2

Rm
Delete a file or directory
Rm filename

MV
Change the file name or directory
MV file1 file2

Find
Search for files using matching expressions
Find.-Name "*. c"-print

File
Display file type
File filename

Select Operation

Command name
Function Description
Example

Head
Displays the first few lines of the file;
Head-20 filename

Tail
Displays the last few lines of the file;
Tail-15 filename

Cut
Display certain fields in each row of a file
Cut-F1, 7-D:/etc/passwd

Colrm
Delete several columns from the standard input;
Colrm 8 20 file2

Diff
Compare and display the differences between the two files
Diff file1 file2

Sort
Sort or merge files
Sort-D-f-u file1

Uniq
Remove duplicate rows from the file
Uniq file1 file2

Comm;
Shows the public and non-public rows of two ordered files;
Comm file1 file2

WC
Number of characters, words, and lines in the Statistical File
WC filename

NL
Add the row number to the file
NL file1> file2

Process operations

Command name
Function Description
Example

PS
Display current process status
PS u

Kill
Terminate the process;
Kill-9 30142

Time Operation

Command name
Function Description
Example

Date
Displays the current date and time of the system.
Date

Cal
Show Calendar
Cal 8 1996

Time
StatisticsProgramExecution time
Time A. Out

Network and communication operations

Command name
Function Description
Example

Telnet
Remote Login
Telnet hpc.sp.net.edu.cn

Rlogin
Remote Login
Rlogin hostname-l Username

Rsh;
Run the specified command on the remote host
Rsh f01n03 date

FTP;
Transfers files between the local host and remote host
FTP
Ftp.sp.net.edu.cn

RCP
Copy files between the local host and remote host
RCP file1 host1: file2

Ping;
Send a Response Request to a network host;
Ping hpc.sp.net.edu.cn

Mail
Reading and sending emails;
Mail

Write
Send messages to another user
Write username pts/1

Mesg
Allow or reject receiving packets
Mesg n

Korn shell command

Command name
Function Description
Example

History
Lists the commands and numbers that have been executed recently;
History

R
Repeat the execution of a recent command.
R-2

Alias
Define an alias for a command
Alias del = Rm-I

Unalias
Cancels the definition of an alias.
Unalias del

Other commands

Command name
Function Description
Example

Uname
Displays information about the operating system.
Uname-

Clear;
Clear screen or window content
Clear

Env;
Display All currently set Environment Variables
Env

WHO;
List all users currently logged on
Who

Whoami;
Displays the username currently performing the operation
Whoami

Tty
Display terminal or Pseudo Terminal name
Tty

Stty
Display or reset control key definitions
Stty-

Du
Query disk usage Du-K subdir
DF/tmp
Displays the total space and available space of the file system.

W
Displays the total information of the current system activity.