Linux basic Instructions (i)

One, managing virtual machines

[[email protected] desktop]$ rht-vmctl start Desktop//Open virtual machine

[[email protected] desktop]$ rht-vmctl view Desktop//Display virtual machine

[[email protected] desktop]$ rht-vmctl stop Desktop//gracefully shut down virtual machine

Stopping Desktop.^c[[email protected] desktop]$ //ctrl+c exiting the current operation

[[email protected] desktop]$ rht-vmctl poweroff Desktop//force shutdown virtual Machine

[[email protected] desktop]$ rht-vmctl reset Desktop//Reset virtual machine and power on

[[email protected] desktop]$ gedit//Open Notepad

Second, time

Cal//Bring up the calendar of the month-H to see its parameters

Date MMDDHHMMCCYY.SS//Set time

date-d +/-digit Day//display not today's date

Date +format//Displays the time in the specified format (do not forget the plus sign)--h can view its parameters

Third, the password

Watch-n 1 Instruction //monitoring This instruction is updated every 1s

Watch-n 1 passwd-s Student

passwd//Change Password

Su-student//toggle user su Space-space user name

Passwd-l student//Lock the user's password

Passwd-u student//unlock the user password

Passwd-n 1 student//Only one password is allowed per day (minimum validity)

Passwd-x student//The password can only be locked after 30 days (maximum validity)

Passwd-w 2 student//Password period remaining 2 days reminder (warning period)

Passwd-i 3 Student//password expires after 3 days (inactive days)

Passwd-s student//view password information

Iv. File and directory operations

Cat Myfile//view file Myfile

Less Myfile//Paging view MyfileQ launch

Head-n 5 Myfile//view Top 5 rows

Tail-n 5 Myfile//view after 5 rows

WC Myfile//View files Myfile information line number of words number of bytes file name

wc-l//number of rows-w//number of words-c//bytes-m//characters

Touch file//modify timestamp of files create file

mkdir directory//Create directories

Mkdir-p directory//Iteration Create a Catalog

RM file//delete file

Rm-f file//force Delete files

Rm-r directory//Iteration first-level removal of directories

RM-RF directory//forcibly deleting directories

RM-RF *//delete current directory All

V. Common viewing instructions

History//view historical operations

！ 127//Perform 127-line historical operations

Ctrl+r Enter keywords //Perform recent historical operations related to keywords

History-c//Delete all historical operation Records

PWD//Show current path

Stat file/directory//Display file/directory information

Vim File//press the editor to open files i//edit esc:q!/wq//exit

CD-//return to last directory

Cd.. //Return to previous level

CD ~//Back to home directory

LS//Displays the files and directories in the current directory

Ls-a//Displays all files and directories (included) in the current directory. .. Hidden files)

Ls-l file/directory//Detailed display file/directory

ls-d//listing the directory itself

Ls-r directory//page contents

VI. Copy move operation

MV file file1direcotry//Move file file1 into directory

MV Presence file does not exist file//rename file

MV Westos/linux. //Move Linux in Westos to the current directory. Represents the current directory

CP file File1 file2 ... Directory//Copy file File1 file2 to Directory

CP file Test//Build test file template as file

Cp-r directorydirecotry1//copy Directories

Vii. Regular Expressions

*# # #匹配0到任意字符

？ # # #匹配单个字符

[[: Alpha:]] # # #匹配单个字母

[[: Lower:]] # # #匹配单个小写字母

[[: Upper:]] # # #匹配单个大写字母

[[:d Igit:]] # # #匹配单个数字

[[: Alnum:]] # # #匹配单个数字或字母

[[:p UNCT:]] # # #匹配单个符号

[[: Space:]] # # #匹配单个空格

{} indicates a nonexistent or existing

{1..9} # # #1-9

{A.. f}# # #a-F

{1,3,5} # # #135

{A,c,e} # # #a C E

{1..3} {A.. C}# # #1a 2a 3a 2a 2b 2c 3a 3b 3c

[] Indicates the existence of the

[A-c] # # #aA BB CC

[A-c] # # #aA或者bB或者c

[1-3] # # #1或者2或者3

[145] # # #1或者4或者5

[^abc]| [!ABC] # # #除了a并且除了b并且除了c

Egg

Touch Fiale fiale fi2le fi_le "fi le"

Rm-f fi[[:alpha:]]le//Match Letter

Rm-f fi[[:upper:]]le//matching uppercase letters

Rm-f fi[[:lower:]]le//matching lowercase letters

Rm-f fi[[:alnum:]]le//matching numbers

Rm-f fi[[:p unct:]]le//Match symbol

Rm-f fi[[:space:]]le//matching spaces

Touch file{1..10}

Touch File{a. Z

Touch File{a,b,c}

Rm-f file{1..10}

Rm-f file[1..9]//[] Max to 9 and can only be used to delete cannot be used to create

Rm-f file\[1..9\]//delete a file file[1..9]

rm-f [!ABC]

rm-f [^ABC]//quite with! Take Non-

Linux basic Instructions (i)