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AWK 使用以下行拆分输出

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AWK 使用以下行拆分输出

我怎样才能像这样使用 tailf 和 awk 拆分输出行？

由此：

tail -f logfile.log | awk '/connected/ {print "\033[31m" $0 "\033[39m"}'

输出：

2018-01-31 10:00 user connected autentication successful
2018-01-31 10:10 user connected autentication successful
2018-01-31 10:23 user connected autentication successful
2018-01-31 10:34 user connected autentication unsuccessful
2018-01-31 10:35 user connected autentication unsuccessful

输出如下：

2018-01-31 10:00 user connected autentication successful
----------------------------------------------------------
2018-01-31 10:10 user connected autentication successful
----------------------------------------------------------
2018-01-31 10:23 user connected autentication successful
----------------------------------------------------------
2018-01-31 10:34 user connected autentication unsuccessful
----------------------------------------------------------
2018-01-31 10:35 user connected autentication unsuccessful

提前致谢！

答案1

如果您希望分隔线是白色的：

tail -f logfile.log | awk '/connected/ {print "\033[31m" $0 "\033[39m\n-----------------------------------"}'

如果您希望分隔线为红色：

tail -f logfile.log | awk '/connected/ {print "\033[31m" $0 "\n-----------------------------------\033[39m"}'

答案2

如果您想要做的只是----------------------------------------------------------在每一行后打印，请将 ORS（输出记录分隔符）设置为您希望在每一行后出现的任何内容：

$ awk -v ORS='\033[39m\n----------------------------------------------------------\n' '/connected/ {print "\033[31m" $0}' foo
2018-01-31 10:00 user connected autentication successful
----------------------------------------------------------
2018-01-31 10:10 user connected autentication successful
----------------------------------------------------------
2018-01-31 10:23 user connected autentication successful
----------------------------------------------------------
2018-01-31 10:34 user connected autentication unsuccessful
----------------------------------------------------------
2018-01-31 10:35 user connected autentication unsuccessful
----------------------------------------------------------

在这里，我将\033[39m从命令 移到 ORS print，并用换行符 ( ) 将连字符括起来\n。

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