The Linux command Note LS

If you want to show all the commands in a continuous update to a blog, it will be very inconvenient to find in the future. For this reason, many of the commands are recorded separately in the future.
Here, some basic usage is not too much to explain. The main record is usually used in some of the commands.

Command: LS-[options] [operation Object]

• Reverse the current directory information after entering the directory

使用参数d即可。eg: hicode@test:~/lab/dir$ ls1.md  2.md  3.md  4.md  5.md  6.md想反查看dir目录的信息hicode@test:~/lab/dir$ 34096Jul  101:17 .

• List all sub-directories in the current directory only

No direct command, use grep to filter, flag isls 加上 -p后会给目录文件加上/符号

-p,–indicator-style=slash
Append/indicator to Directories

Eg:[email protected]:~$ ls-lp |Grep/Drwxr-XR- x 3Hicode Hicode4096Dec -   -Desktop/Drwxr-XR- x 2Hicode Hicode4096Nov7   -Documents/Drwxr-XR- x 2Hicode Hicode4096Dec -   -Downloads/Drwxrwxr- x 7Hicode Hicode4096Dec9   -Gothonweb/Drwxrwxr- x 3Hicode Hicode4096Jul1  on: theLab/Drwxrwxr- x 4Hicode Hicode4096Dec -   -Labs/

Another method is ls -l to display the records in which the directories are to d begin with.

-l |grep ^d

• List files only

can be writtenls -lp | grep [^/]$

Principle: Lists all outputs that do not end with the output / from thels -lp

[Email protected]:~$ ls-lhpa |grep ' [^/]$ ' Total 1.2g-rw------- 1 hicode hicode K Jul1 xx:49 . Bash_history  -rw-r--r-- 1 hicode hicode  7 . Bash_logout    -rw-r--r-- 1 hicode hicode 3.5K Nov7 . BASHRC    -rw------- 1 hicode hicode M Dec  Core  -rw-r--r-- 1 hicode hicode  June  : DMRC -rw-r--r-- 1 hicode hicode 8.3K Nov7 examples.desktop     

Or use a different method: ls -l显示的文件都是以-开头作为文件标志 . So it can also be written, this good understanding.

[Email protected]:~$ ls- L |grep ^--RW------- 1Hicode Hicode33206272Dec -   -Core-RW- R--R-- 1Hicode Hicode8445Nov7   -Examples.Desktop-RW-RW- R-- 1Hicode Hicode279The1  2005Hosts-RW- R--R-- 1Hicode Hicode -June -  A: -Issue-RW-RW- R-- 1Hicode Hicode176June -  +: $Log1.Txt-RW-RW- R-- 1Hicode Hicode4617Jan A   theMans.Config

• View the number of files in the current directory, append a pipeline command to the previous command |wc -l (Wordcount-linenumber)

Hicode@test:~$ Ls-l |grep ^-|wc-l (file) theHicode@test:~$ Ls-lp |grep ^d |wc-l (catalogue) +Hicode@test:~$ Ls-lp |wc-l (All) *                                    the+ +  noteq *( the.) Hicode@test:~$ Ls-lp |grep ^d |wc-l +Hicode@test:~$ Ls-lp |grep ^[^d] |wc-l -Hicode@test:~$ Ls-l |grep ^[^d-] (Soga, there is a row of statistics) total1166396There was another line.

lsThe directory tree structure cannot be displayed and can be downloaded tree .

sudo apt-get install tree

Usagetree --help

Very useful, and LS, the default is not the input path is the current directory

hicode@test:~/lab$ tree.├── a.txt├── b.txt├── c.txt├── dir│   1.md│   2.md│   3.md│   4.md│   5.md│   6.md│   └── sadf├── d.txt└── e.txt211 files

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The Linux command Note LS