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2025-01-16 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Servers >
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This article mainly introduces in detail the command of centOS 7 to manage directory files. The sample code in this article is very detailed. It is easy to learn and is very suitable for beginners.
Simple operation of the cat;more;less;head;tail;wc;grep;bzip2;tar;vi;vim command
1.cat
View all the contents of a file at once; not suitable for reading large documents
2.more
Can be viewed by page; flexible; spacebar to turn the page; line by line to view using enter key; exit view using Q key
3.less
Support paging view; support page up and down; support content search; pgup page up; pgdown page down
4.cat and more are used together
5.head
View the start line, and view the first 10 rows of data by default
6.tail
View the last row, and view the last 10 rows of data by default
7.wc statistics file
Common options for wc
-l statistical lines;-w statistics on the number of words;-c statistics on size
8.grep
Common options for grep
-I ignore case
-v reversal
9.gzip file compression and decompression
Common options for gzip
-Q high compression
-d unzip the compressed file
Common options for 10.bzip2
-Q high compression
-d decompression
Common options for 11.tar Archive Command
-c create a compressed file
-x extract the file
-C extract to the specified directory
-v display details
-z create compressed and decompressed files using gzip
-j create compressed or unzipped files using bzip2
-p Compression keeps the file directory permissions unchanged
-t view a list of compressed data
-P keep the compressed source file directory unchanged
12.vi and vim
Three modes of vi
1) Command mode
Adjust the cursor position; copy, delete, paste and use
2) insert mode
Modify text usage; add, modify, update data usage
3) Last row mode
Save find replace text file use
4) switch between modes
Command to enter insert mode
I insert data in front of the cursor; An insert data at the end of the row where the cursor is located; o insert data in the next row of the row where the cursor is located
Return input mode to command mode
Use the ESC key
5) Last row mode
Use esc to enter:
6) inline jump
^ reach the beginning of the line; o reach the beginning of the line; $t reach the end of the line
7) Jump between lines
Gg quickly reaches the beginning of the line; G quickly reaches the end of the line; logg quickly reaches line 10
8) copy
Yy copies a row of data; 5yy copies 5 rows of data after the cursor
9) paste
P
10) Delete
Dd deletes the whole row of data
X Delete the location data of the cursor
Delete the data in front of the cursor
D $data after cursor deletion
11) undo deletion
Undo one-time u
Undo multiple use of U (uppercase)
12) Last row mode
W save
: X save and exit
Wq saves and exits
: wq! Force save and exit
: q! Forced exit
Q quit editing and do not save
13) replace
1 s/h/bb/g 20 change the h of line 1 to 20 with bb
:% s/b/dd/g changes the b of the whole file into dd
After reading the contents of the appeal, have you mastered the method of centOS 7's command to manage directory files? If you want to know more about it, welcome to follow the industry information channel!
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