New answers tagged regular-expression
4
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).
...
- 84k
0
votes
How to specify [[hints.enabled]] Alacritty section one matching hypelinks (open on mac) and second any file paths and open in vim
(Edit: Linux related, not using Mac's open)
Alacritty spawns a daemon to run the command in, that's why it's separate from your shell process. Pasting the matched text in your shell could be a feature ...
- 1
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
5
votes
Help w/ "posix-extended" regex for 'find'
In addition to @muru's answer pointing out that find doesn't support \s (so you need to use [:space:] instead):
Instead of A-Za-z, you can use the posix character class [:alpha:], and instead of A-Za-...
- 84k
3
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
0
votes
Accepted
Open specific URLs in certain app?
Use a wrapper script:
#!/usr/bin/bash
url=$1
if [[ $url == *youtube.com/watch* ]] ||
[[ $url == *youtu.be* ]] ||
[[ $url == *vimeo.com* ]] ||
[[ $url == *instagram.com* ]] ||
[[ $url == *...
- 1,250
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
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
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
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", $i, (i<(NF-1) ? OFS : ORS)}' ...
- 35.8k
0
votes
sed: invalid usage of line address 0
The line address 0 is a non-standard extension of the GNU implementation of sed that allows doing things like 0,/pattern/ x to run the x action on lines from the start of the input(s) (or start of the ...
- 585k
1
vote
sed: invalid usage of line address 0
This will robustly do what I think you want, using any awk:
awk -v d="$(date '+%d/%b/%Y' --date='30 days ago')" '
f || ($0 ~ "^"d":([0-1][0-9]|2[0-3]):[0-5][0-9]$") { ...
- 35.8k
0
votes
How to make Perl half/full width-insensitive regular expressions?
What is the easy way to write /４|4/ ?
Here's a long one-liner:
perl -COA -lwe "@c=('A'..'C','x'..'z','0'..'9'); $rs = sprintf'[%s%s]', join('',@c), join('',map chr 0xfee0+ord, @c); print $rs; $r ...
- 864
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