How to use type to view commands in linux

This article mainly shows you how to use the type view command in linux. The content is simple and easy to understand. It is clearly organized. I hope it can help you solve your doubts. Let Xiaobian lead you to study and learn how to use the type view command in linux.

type Check the type of command, such as whether the command is alias, built-in command, file, or keyword

What kind of gods: heaven or earth, or swimming in water

[root@tianyun ~]# type ll

ll is aliased to `ls -l --color=auto'

[root@tianyun ~]# type ls

ls is aliased to `ls --color=auto'

[root@tianyun ~]# type cd

cd is a shell builtin //builtin built-in command

[root@tianyun ~]# type for

for is a shell keyword //keyword Keyword

[root@tianyun ~]# type useradd

useradd is /usr/sbin/useradd

[root@tianyun ~]# type -a ls //-a List all types of this command

ls is aliased to `ls --color=auto'

ls is /usr/bin/ls

file View file types such as text files, binary files, pipeline files, equipment files, link files

Man, God, Devil, Demon

[root@tianyun ~]# file /etc/hostname

/etc/hostname: ASCII text

[root@tianyun ~]# file /dev/sda

/dev/sda: block special

[root@tianyun ~]# file /dev/zero

/dev/zero: character special

stat Detailed attributes of the file, such as file name, size, permissions, atime, ctime, mtime

height, weight, sex, age, and skill

[root@tianyun ~]# stat /etc/hostname

File: '/etc/hostname'

Size: 22 Blocks: 8 IO Block: 4096 regular file

Device: fd00h/64768d Inode: 68703440 Links: 1

Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)

Access: 2017-07-25 11:11:14.257652134 +0800

Modify: 2017-07-25 10:21:34.175003119 +0800

Change: 2017-07-25 10:21:34.176003171 +0800

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