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This article mainly introduces "the usage of Linux basic command look". In daily operation, I believe many people have doubts about the usage of Linux basic command look. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "the usage of Linux basic command look"! Next, please follow the editor to study!

Look

Displays lines in the file that start with a specific string. When look performs a binary search, the lines in the file must be sorted. If no file is specified, the file "/ usr/share/dict/words" is used, comparing only alphanumeric characters and ignoring the case of alphanumeric characters.

The scope of this command: RedHat, RHEL, Ubuntu, CentOS, SUSE, openSUSE, Fedora.

1. Grammar

Look [options] string files

2. List of options

Option

Description

-- version

Display command version information

-- help

Show help documentation

-d

Compare only numbers and letters, and ignore others

-f

Ignore the case of characters

-a

Use the dictionary file / usr/dict/web2

-t

Specify string Terminator

3. Examples

Show lines that begin with hello

[root@localhost weijie] # cat 1.c / / View the file

Hello world

I am david.

I love linux

Love code.

[root@localhost weijie] # look hello 1.c / / displays lines starting with hello

Hello world

At this point, the study of "the usage of the Linux basic command look" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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