All Questions
6
questions
-2
votes
2
answers
3k
views
Grep not working with variables, even with quotes
name=$(echo "$FILENAME" | grep -E '*\.(eng|por|pt-BR)\.*')
Why this line doesn't work?
if I do
echo "Test (2013).1080p.por.mkv" | grep -E "*\.(eng|por)\.*"
It works, I tried with "" without " and ...
- 1,295
4
votes
3
answers
13k
views
Escape [ in grep
I read strings from stdin and I want to display the users that match the strings. Problem is, if the user inputs the character '[', or a string containing it.
grep -F does not work because the line ...
- 53
7
votes
1
answer
1k
views
How to extract the string between two \n in a file
I have a file with pattern
<span class="WebRupee">Rs.</span>\n29\n<br/><font style="font-size:smaller;font-weight:normal">\n3 days\n</font></td>, <td class=...
- 195
2
votes
1
answer
2k
views
Regex works in shell but not through Perl script
I'm having trouble executing a Perl script through the Unix shell using Perl's system command.
I've had more complex regex commands I had to adjust accordingly to convert from Unix to Perl, and they'...
- 259
17
votes
2
answers
24k
views
Why do I have to escape a "dot" twice?
I know that we can escape a special character like *(){}$ with \ so as to be considered literals.
For example \* or \$
But in case of . I have to do it twice, like \\. otherwise it is considered ...
- 770
2
votes
3
answers
4k
views
Very strange behavior with grep and IFS
I'm having trouble using grep, the returned results are "n-empty", I mean without the 'n' character...
This is the script sample :
OLDIFS=$IFS
IFS="\\n"
i=$(grep -ril $1 *)
echo $i
IFS=$OLDIFS
I ...
- 123