Question

我在日志文件中有关于发送代码的字符串，如：

 <timestamp> INFO   [Response--22] Code [00000000] Code was sent to [+0000002345]

你能帮我解析一下使用BASH将代码值（8chars）放到变量中吗？谢谢你的帮助。

Answer 1

您可以使用sed来提取值：

sed 's/.*Code *\[\([0-9]*\)].*/\1/' <<<"<timestamp> INFO   [Response--22] Code [00000000] Code was sent to [+0000002345]"
00000000

如果该行在文件中，您可以执行sed '...' filename。要将输出存储到变量，可以执行x=$(sed '...' filename)。

Answer 2

如果我理解你的要求：

$ x="<timestamp> INFO   [Response--22] Code [00000000] Code was sent to [+0000002345]"
$ echo "$x" | sed -r 's/.*(Code )\[([0-9]+)\].*/\1= \2/'
Code = 00000000

Answer 3

sed -r 's/(.*)(Code )\[([0-9]+)\](.*)/code = \3/'

<强>输出：

sdlcb@ubuntu:~/AMD_C$ echo "<timestamp> INFO   [Response--22] Code [00000000] Code was sent to [+0000002345]" | sed -r 's/(.*)(Code )\[([0-9]+)\](.*)/code = \3/'
code = 00000000

Answer 4

x='<timestamp> INFO   [Response--22] Code [00000000] Code was sent to [+0000002345]'
read -a fields <<<"$x"
code=${fields[4]//[][]/}
echo "code=$code"

使用bash获取部分字符串

4 个答案: