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发布:Linux Terminal--Seeing the unseen characters with cat!
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Linux终端:用cat命令查看隐藏的字符
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Linux终端:用cat命令查看不可见字符
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=============================
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时常,某个程序或软件并没有语法错误,并且你检查它的相关内容也确实没有发现问题。这是因为你用普通文本编辑器软件来查看的时候,有许多字符没有显示出来,但在终端使用cat命令可以很容易地检测出是否存在这些字符。
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首先,我们创建一个简单的文本文件,写入一些特殊字符。打开终端,运行命令:
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现在我们给cat加上一些选项参数,以便能显示出特殊字符来。
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1) 用cat -T命令来显示TAB键的字符^I
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###用cat -T命令来显示TAB键的字符\^I
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cat -T /tmp/testing.txt
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testing
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@ -37,7 +38,7 @@ Linux终端:用cat命令查看隐藏的字符
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even more testing
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^I^I^I
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2) 用cat -E命令来显示行尾的结束字符$
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###用cat -E命令来显示行尾的结束字符$
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$ cat -E /tmp/testing.txt
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testing$
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even more testing$
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$
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3) 用简单的cat -A命令就可以显示所有不可见的字符:
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###用简单的cat -A命令就可以显示所有不可见的字符:
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$ cat -A /tmp/testing.txt
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testing$
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@ -57,7 +58,7 @@ Linux终端:用cat命令查看隐藏的字符
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^I^@^K^@even more testing$
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^I^I^I$
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--------------------------------------------------------------------------------
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---
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via: http://linuxaria.com/pills/linux-terminal-seeing-the-unseen-characters-with-cat?lang=en#more-7645
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@ -65,13 +66,4 @@ via: http://linuxaria.com/pills/linux-terminal-seeing-the-unseen-characters-with
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译者:[runningwater](https://github.com/runningwater) 校对:[Caroline](https://github.com/carolinewuyan)
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