我想检查一个文件是否包含一个特定的字符串或不在bash。我使用了这个脚本，但它不起作用:
if [[ 'grep 'SomeString' $File' ]];then
# Some Actions
fi
我的代码出了什么问题?
当前回答
我这样做了，似乎还不错
if grep $SearchTerm $FileToSearch; then
echo "$SearchTerm found OK"
else
echo "$SearchTerm not found"
fi
其他回答
我这样做了，似乎还不错
if grep $SearchTerm $FileToSearch; then
echo "$SearchTerm found OK"
else
echo "$SearchTerm not found"
fi
##To check for a particular string in a file
cd PATH_TO_YOUR_DIRECTORY #Changing directory to your working directory
File=YOUR_FILENAME
if grep -q STRING_YOU_ARE_CHECKING_FOR "$File"; ##note the space after the string you are searching for
then
echo "Hooray!!It's available"
else
echo "Oops!!Not available"
fi
试试这个:
if [[ $(grep "SomeString" $File) ]] ; then
echo "Found"
else
echo "Not Found"
fi
最短(正确)版本:
grep -q "something" file; [ $? -eq 0 ] && echo "yes" || echo "no"
也可以写成
grep -q "something" file; test $? -eq 0 && echo "yes" || echo "no"
但在这种情况下，你不需要显式地测试它，所以对:
grep -q "something" file && echo "yes" || echo "no"
如果您想检查文件是否不包含特定的字符串，您可以按照以下方法进行检查。
if ! grep -q SomeString "$File"; then
Some Actions # SomeString was not found
fi
