从bash中的句子中删除特定单词？
我想使用 bash 脚本从句子中删除否定词。
我的意思是消极的话：
[dull,boring,annoying,bad]
我的文件文本text.txt包含这句话：
These dull boring cards are part of a chaotic board game ,and bad for people
我正在使用这个脚本
array=( dull boring annoying bad )
for i in "${array[@]}"
do
cat $p | sed -e 's/<$i>//g'
done < my_text.txt
但是我得到了以下错误的结果：
These boring cards are part of a chaotic board game ,and bad for people
正确的输出必须是这样的：
These cards are part of a chaotic board game ,and for people
回答
首先，假设 $p 是存在的文件然后使用这个脚本
while read p
do
echo $p | sed -e 's/<dull>//g' | sed -e 's/<boring>//g' | sed -e 's/<annoying>//g'|sed -e 's/<bad>//g' > my_text.txt
cat my_text.txt
done < my_text.txt
此脚本的输出：
These cards are part of a chaotic board game ,and for people
或者可以使用这个脚本，你必须使用双引号，而不是单引号来扩展变量。
array=( dull boring annoying bad )
for i in "${array[@]}"
do
sed -i -e "s/<$i>s*//g" my_text.txt
done
该sed -i开关在线替换。
将sed -e脚本添加到要执行的命令中。
要了解有关可以在终端中使用的 sed 命令的更多信息 man sed
- There is more than one solution to the question, and the solution that you have raised is also good, thanks for the important remarks that you provided to me .
- Running multiple static `sed` scripts in a chain or a loop betrays a fundamental lack of `sed` understanding. It's a scripting language, after all, albeit a primitive one.