7
votes
Syntax Error on ssed for Regex Subroutine definitions
tl;dr: Forget about ssed. Use perl.
Here's why:
ssed is abandonware. It was last updated in Oct 2005. Its home page on sourceforge is gone (and I can't find any replacement on github or gitlab).
...
- 84.3k
6
votes
Help w/ "posix-extended" regex for 'find'
Instead of A-Za-z, you can use the posix character class [:alpha:], and instead of A-Za-z0-9 you can use [:alnum:]. And [:digit:] instead of 0-9. So your find command using extended regexps could be ...
- 84.3k
5
votes
Accepted
Perl RegEx one-liner that outputs all matches from one line of STDIN
echo '"this text", " ", "is in speech marks"' |
perl -lne 'print for /"(.*?)"/g'
Or:
echo '"this text", " ", "is in speech marks&...
- 585k
5
votes
Accepted
sed: why my regex does not work correctly
[^\"] means “any character except \ and "”; so nothing ends up replaced. You’ll get the result you’re after if you remove the backslash from the bracket expression:
sed -e 's/\"\([^&...
- 481k
5
votes
Accepted
Help w/ "posix-extended" regex for 'find'
If you have zsh, you don't need find (and BTW, FreeBSD's find is not old, it's just a different implementation from the GNU one, where extended regexps is just with -E like in grep or sed).
find . -...
- 585k
4
votes
Help w/ "posix-extended" regex for 'find'
Two things:
\s is not supported by GNU find. There are \w and \W for word and non-word, but no \s. See the documentation. Also: Why does my regular expression work in X but not in Y? on why the ...
- 77.9k
2
votes
Accepted
Where can one find a repository of regex for logcheck?
The logcheck downloads page contains a link to logcheck-database, which points to the Debian logcheck-database package page. The package description is the following:
This package brings a database ...
- 1,648
1
vote
Perl RegEx one-liner that outputs all matches from one line of STDIN
python would be much too verbose as a CLI one-liner
For what it is worth, seeing the complex:er perl in @Stéphane's answer...
# copy & paste the following lines into a shell to try it out
echo '&...
- 524
1
vote
Extract email addresses from line, with multiple email addresses per line
Using any awk, assuming the input is as simple/regular as in the provided example:
$ awk -F'[<>]' -v OFS=', ' '{for (i=2; i<=NF; i+=2) printf "%s%s", $i, (i<(NF-1) ? OFS : ORS)}' ...
- 35.9k
1
vote
Searching for literal strings like '***' using less
You are looking for the literal string *** using less. You could just pipe the file into grep. Something like this...
$ cat stars.txt
*
**
***
****
text***text
***text***
**should not match**
$ ...
- 111
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