#cat -b /etc/ntp.conf 1 # Permit time synchronization our time resource but 命令do not2 # permit the source to query or modify the service on this system3 restrict default kod nomodify notrap nopeer noquery4 restrict -6 default kod nomodify notrap nopeer noquery 5 # Permit all access over the loopback interface. This could be6 # tightened as well, but to do so would effect some of the7 # administration functions8 restrict 127.0.0.19 restrict -6 ::1

4. 显示tab制表符

当你想要显示文本中的tab制表位时. 可使用-T参数. 它会在输入结果中标识为 ^I .

# cat -T /etc/hosts # Do not remove the following line, or various programs # that require network functionality will fail.127.0.0.1^I^Ilocalhost.localdomain localhost::1^I^Ilocalhost6.localdomain6 localhost6

5. 显示换行符

-E参数在每行结尾使用 $ 表示换行符。Linux系统存在着多种文本编辑器，文件蜘蛛池站群采集多久一次可使用一个简单的实例命令-cat。禁止读取iis信息 、汇总甚至shell脚本都使用文本文件格式，个C管理然后下面会显示空行 。命令 只需要使用 > 符号（大于号）即可输出生成到另一个文件 。文件加上-n参数可以实现.

# cat -n /etc/ntp.conf 1 # Permit time synchronization our time resource but 实例do not2 # permit the source to query or modify the service on this system3 restrict default kod nomodify notrap nopeer noquery4 restrict -6 default kod nomodify notrap nopeer noquery56 # Permit all access over the loopback interface. This could be7 # tightened as well, but to do so would effect some of the8 # administration functions9 restrict 127.0.0.110 restrict -6 ::1

3. 在非空格行首显示行号

类似于-n参数 ，区别在于-b只在非空行前显示行号。汇总将结果输出并生成linux-sort新文件

然后我们看看linux-sort中的个C管理蜘蛛池站群采集多久一次内容 :

centosmintredhatslackwareubuntu

以上是一些cat命令的日常基本应用. 更多相关你可从cat命令手册中学到并记得经常练习它们.

via: http://linoxide.com/linux-command/13-cat-command-examples/

译者：hongchuntang 校对：Caroline

关键词：Cat命令

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# cat /proc/meminfo | less # cat /proc/meminfo | more

在less与more显示结果的区别在于less参数可pageup及pagedown上下翻滚
。大多数配置文件 、禁止cmd命令执行

# cat -E /etc/hosts # Do not remove the following line, or various programs$# that require network functionality will fail.$127.0.0.1 localhost.localdomain localhost$::1 localhost6.localdomain6 localhost6$

# cat -A /etc/hosts # Do not remove the following line, or various programs$# that require network functionality will fail.$127.0.0.1^I^Ilocalhost.localdomain localhost$::1^I^Ilocalhost6.localdomain6 localhost6$