Common CentOS learning commands ls

Common CentOS learning commands ls

Command Format and directory Processing Command ls

Command Format: Command [-options] [parameters]

For example: Ls-la/etc

Note:

1) Some commands do not follow this format

2) when there are multiple options, you can write them together

3) Simplified options and complete options

-A equals to -- all

PS: in Linux, "." indicates a hidden file.

Directory processing command: ls

Command Name:

Ls

Command:

List

Command path:

/Bin/ls

Execution permission:

All users

Function Description:

Show directory files

Syntax:

Ls option [-ald] [file or directory]

-A: displays all files, including hidden files.

-L detailed information display

-D. view directory properties.

# Ls-a: view files in the local directory (including hidden files)

# Ls-l display the detailed information of the file

1rootroot1208 August 6: 22anaconw.ks.cfg

1rootroot24772, December 6, December 30: 22install. log

1rootroot7690 August 6: 21install. log. syslog

Root owner root group 7690 File Size

The followingLs-lh is to convert the file size byte display into Windows

12345[root@localhost ~]# ls -lhTotal usage 44 K-rw-------. 1 root root <spanstyle="font-size: 16px;"><strong><spanstyle="color: #800080;">1.2K</span></strong></span> December 3 06:22 anaconda-ks.cfg-Rw-r --. 1 root 25 K December 3 06:22 install. log-Rw-r --. 1 root 7.6 K December 3 06:21 install. log. syslog

1.2 K and 7690 represent one meaning, but when ls-lh is used, the file size will be changed to the K, M, G representation we are familiar with, rather than the byte representation.

-Rw-r --

-File type (-binary file d indicates directory l indicates soft link file)

Rw-r --

U g o

U owner g owner group o others

PS: r read w write x Execute

12[root@localhost ~]# ls -lhd /etcDrwxr-xr-x. 102 root 12 K December 15 06:36/etc

Ls-lhd/etc is to viewThe size of the etc directory Instead of viewing all contents in the ect directory.

12[root@localhost ~]# ls -i795111 anaconda-ks.cfg 786436 install.log 786437 install.log.syslog

# Ls-I view the ID number of each file