.cat文件如何打开看这里!深入解析Linux常用命令（五）——cat

1.概述

cat常用于查看文件内容。

2.显示文件内容（显示字符）

cat -A 显示文件内容，包括结束符、TAB。其中结束符以$显示，TAB以^I显示，空格不显示。

[root@smart Desktop]# cat AUTHOR Written by Richard M. Stallman and David MacKenzie. [root@smart Desktop]# cat -A AUTHOR$ ^IWritten by Richard M. Stallman and David MacKenzie.$ $

3.显示行号

cat -b 显示非空行行号

cat -n 显示所有行行号

[root@smart Desktop]# cat -b 1 AUTHOR 2 Written by Richard M. Stallman and David MacKenzie. 3 REPORTING BUGS 4 Report ls bugs to bug-coreutils@gnu.org 5 GNU coreutils home page: <; 6 General help using GNU software: <; 7 Report ls translation bugs to <; [root@smart Desktop]# cat -n 1 AUTHOR 2 Written by Richard M. Stallman and David MacKenzie. 3 4 REPORTING BUGS 5 Report ls bugs to bug-coreutils@gnu.org 6 GNU coreutils home page: <; 7 General help using GNU software: <; 8 Report ls translation bugs to <;

4.显示特殊字符

cat -E ，以$显示结束符，此时不会显示TAB字符。

cat -T，以^I显示TAB字符。

[root@smart Desktop]# cat -E AUTHOR$ Written by Richard M. Stallman and David MacKenzie.$ [root@smart Desktop]# cat -T AUTHOR ^IWritten by Richard M. Stallman and David MacKenzie.

Enjoy！

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2017/11/9