grep - xargs:字符串串联

Question

zgrep -i XXX XXX | grep -o "RID=[0-9|A-Z]*" |
   uniq | cut -d "=" -f2 |
   xargs -0 -I string echo "RequestID="string

我的输出是

RequestID=121212112
8127127128
8129129812

但是我的要求是在所有输出之前都添加请求ID。
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Answer 1

尝试使用-n的xargs选项。

-n max-args

Use at most max-args arguments per command line. Fewer than max-args arguments will be used if the size (see the -s option) is exceeded, unless the -x option is given, in which case xargs will exit.

例子:

$ echo -e '1\n2' | xargs echo 'str ='
str = 1 2

$ echo -e '1\n2' | xargs -n 1 echo 'str ='
str = 1
str = 2