Linux文件系统命令 cat

命令名：cat

功能：在当前窗口中查看制定位置的文件的内容。

eg:

renjg@renjg-HP-Compaq-Pro--MT:~/test$ cat /etc/apache2/ports.conf
# If you just change the port or add more ports here, you will likely also
# have to change the VirtualHost statement in
# /etc/apache2/sites-enabled/-default.conf

Listen
Listen xxxx
Listen xxxx
<IfModule ssl_module>
    Listen
</IfModule>

<IfModule mod_gnutls.c>
    Listen
</IfModule>

# vim: syntax=apache ts= sw= sts= sr noet
renjg@renjg-HP-Compaq-Pro--MT:~/test$ 

常见用法：将输出的内容显示行号

renjg@renjg-HP-Compaq-Pro--MT:~/test$ cat -n /etc/apache2/ports.conf
         # If you just change the port or add more ports here, you will likely also
         # have to change the VirtualHost statement in
         # /etc/apache2/sites-enabled/-default.conf

         Listen
         Listen xxxx
         Listen xxxx
         <IfModule ssl_module>
             Listen
        </IfModule>

        <IfModule mod_gnutls.c>
            Listen
        </IfModule>

        # vim: syntax=apache ts= sw= sts= sr noet
renjg@renjg-HP-Compaq-Pro--MT:~/test$