在Bash中，如何在文件中的每一行后面添加一个字符串?

How do I add a string after each line in a file using bash? Can it be done using the sed command, if so how?

如何使用bash在文件中的每一行之后添加字符串?如果可以，可以使用sed命令来完成吗?

4 个解决方案

#1

133

If your sed allows in place editing via the -i parameter:

如果您的sed允许通过-i参数进行适当的编辑:

sed -e 's/$/string after each line/' -i filename

If not, you have to make a temporary file:

如果没有，你必须做一个临时文件:

typeset TMP_FILE=$( mktemp )

touch "${TMP_FILE}"
cp -p filename "${TMP_FILE}"
sed -e 's/$/string after each line/' "${TMP_FILE}" > filename

#2

If you have it, the lam (laminate) utility can do it, for example:

如果你有，林(层压)实用程序可以做它，例如:

$ lam filename -s "string after each line"

#3

I prefer using awk. If there is only one column, use $0, else replace it with the last column.

我更喜欢使用awk。如果只有一列，请使用$0，否则将其替换为最后一列。

One way,

一种方法,

awk '{print $0, "string to append after each line"}' file > new_file

or this,

或者,

awk '$0=$0"string to append after each line"' file > new_file

#4

-8

Sed is a little ugly, you could do it elegantly like so:

Sed有些丑陋，你可以这样优雅地完成:

hendry@i7 tmp$ cat foo 
bar
candy
car
hendry@i7 tmp$ for i in `cat foo`; do echo ${i}bar; done
barbar
candybar
carbar

#1

133