Linux commands: WC

Introduction to the WC command:

The WC command is used to count the number of lines of text, the number of words, and the number of bytes.

1. command format:

WC [OPTION] ... [FILE] ...
WC [OPTION] ...--files0-from=f

2. Command function:

The WC command is used to count the number of lines of text, the number of words, and the number of bytes.

3. Command parameters:

-L: Show only lines of text

-W: Displays only the number of words

-C: Show only the number of bytes

-M: Displays only the number of characters

-L: Indicates how many characters the longest row contains

4. Command instance:

[Email protected] test]# wc-l/etc/passwd

29/etc/passwd

[Email protected] test]# wc-l/etc/passwd

89/etc/passwd

[Email protected] test]# wc-c/etc/passwd

1381/etc/passwd

[Email protected] test]# wc-w/etc/passwd

50/etc/passwd

2. TR character processing command: Used to convert or delete characters

tr [OPTION]...SET1 [Set2] set represents a set of

Tr ' A-Z ' A-Z ' </etc/passwd all lowercase letters in the passwd file into uppercase

-D: Delete all characters that appear in the character set

[[email protected] test]# tr-d ' AB '

Helloabcd

Hellocd

This article is from the "Learn Linux history" blog, please be sure to keep this source http://woyaoxuelinux.blog.51cto.com/5663865/1859412

Linux commands: WC