One day a linux base command view file at the beginning of the content head

Head View the contents of the start of a file

1 , command format

Head [option] ... [File] ...

2 , command functions

show file contents, default display of the first 10 lines of the file, you can use [-n] # | [-#] # represents the number of rows displayed, the option specifies how many rows are displayed , if not " file file " when reading input from standard input

3 , common options

- C # : Displays the bytes of the file ( character ) number

- N # : Shows how many lines of a file

4 , command instance

1. Display the first n rows of the file

command: Head-n # File | head-# file

[[Email protected]~]# cat-n Test 1 Askdasjkdhsak 2 hkjasd 3 hakjsd 4 HJAKSD 5 Haksdla SDAs 6 Kasdl[[email protected] ~]# head-n 3 test askdasjkdhsakhkjasdhakjsd[[email protected]~]# head-3 test askda Sjkdhsakhkjasdhakjsd[[email protected]~]#

2. except the last 2 lines do not show all other display

command: head-n-# File

[Email protected]~]# head-n-2 test Askdasjkdhsakhkjasdhakjsdhjaksd[[email protected]~]#

3. Display the first n Characters of a file

command: head-c # File

[Email protected]~]# head-c Test Askdasjkdhsakhkjasd[[email protected]~]#

tip: When displaying characters , No line break by default

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One day a linux base command view file at the beginning of the content head