使用SED / AWK编辑文件 [英] Edit a file using sed/awk
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问题描述
我有一个包含以下数据的文件：
I have a file which contains the following data:
wednesday
Weekday
thursday
Weekday
friday
Weekday
saturday
MaybeNot
sunday
MaybeNot
monday
Weekday
tuesday
Weekday
我想插入一个字符串 $：在每个备用线路，使得该文件被改写前$ 如下：
wednesday
$:$Weekday
thursday
$:$Weekday
friday
$:$Weekday
saturday
$:$MaybeNot
sunday
$:$MaybeNot
monday
$:$Weekday
tuesday
$:$Weekday
我将如何实现这一目标用awk / sed的？
How would I achieve this using awk/sed?
推荐答案
确定。在这里。
cat << EOF | awk -vRS="" '{print $1 "\n$:$" $2 "\n" }'
wednesday
Weekday
thursday
Weekday
friday
Weekday
saturday
MaybeNot
sunday
MaybeNot
monday
Weekday
tuesday
Weekday
EOF
给...
wednesday
$:$Weekday
thursday
$:$Weekday
friday
$:$Weekday
saturday
$:$MaybeNot
sunday
$:$MaybeNot
monday
$:$Weekday
tuesday
$:$Weekday
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