Linked Questions
23 questions linked to/from Capturing Groups From a Grep RegEx
0
votes
3
answers
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how to egrep after using egrep -o [duplicate]
I have a file called random.html with the following line(not the only line):
blahblahblahblah random="whatever h45" blahblahblahblah
I want to specifically only get whatever, so far i used the ...
- 59
-2
votes
1
answer
326
views
How to capture specific text with grep, in Bash Command Line? [duplicate]
I need to capture a specific string using grep, on Bash Command Line. I cannot use sudo install/apt-install to install any addition software/packages like jq. I am not using any Python Interpreter; ...
0
votes
0
answers
114
views
Parse netstat -s using regex in shell script [duplicate]
netstat -s gives output like below
Tcp:
12345 active connections openings
34345345 passive connection openings
3434 failed connection attempts
54545 connection resets received
5 connections ...
-2
votes
1
answer
111
views
How can bash recognize regex groups? [duplicate]
I am trying to use regex to match a filename out of a path.
#!/bin/bash
regex=[^/]+?(?=.zip)
path="/home/quid/Downloads/file.zip"
if [[ $path =~ $regex ]]
then
echo "Found a match"
echo $...
- 67
0
votes
0
answers
44
views
411
votes
12
answers
641k
views
How can I output only captured groups with sed?
Is there a way to tell sed to output only captured groups?
For example, given the input:
This is a sample 123 text and some 987 numbers
And pattern:
/([\d]+)/
Could I get only 123 and 987 output in ...
- 29.1k
67
votes
8
answers
61k
views
Grep - how to output only the content of a capturing group
I am trying to find a way for grep to output only the content of a capturing group. For instance, if I have the following file:
hello1, please match me
hello2, please do not match me
I would like
...
- 1,192
3
votes
5
answers
5k
views
Extracting string between two slashes using sed [duplicate]
I am trying to use sed to extract a specific string from a line within a file. Currently I am reading in a file with a while loop and searching for a specific string. When that string is found I am ...
- 97
3
votes
5
answers
1k
views
Pass the matched value to a function, and replace with the return value
How would I get Bash to match a regular expression, but rather than replace the value with a constant string, it will instead pass the matched value to a function, and then get the value to replace ...
- 8,360
1
vote
4
answers
1k
views
Bash script for getting tag value
Is there any way to get value(Yes or No) if i only have tag("answer_yes" or "answer_no") which are described in a xml file. I want to get them using bash.
<string tag="answer_yes" value="Yes"/>
...
- 126
2
votes
3
answers
999
views
Bash - Extract region from AWS arn
Very simple task: extract the region from an AWS arn.
Example:
arn:aws:lambda:eu-west-2:12345678912:layer:my-awsome-layer:3
I need to extract eu-west-2
I have a working regex for this: ^(?:[^:]+:){3}(...
- 1,907
0
votes
2
answers
2k
views
regular expression with grep not working?
I am running cygwin, grep 2.21 on Windows 7.
I am trying to get all tcp connections from netstat, so I run the following:
netstat | grep -i "^(TCP|UDP)"
Now, it returns nothing, but when I run ...
- 9,703
0
votes
3
answers
620
views
Get specific key value in log pattern using the shell script
My log file has below pattern :-
tx=267c5660-c49a-4ae7-b5ae-c9d43e23b617, rh=163.172.0.0, userId=-1, requestComplete={ requestId=74421156932, entityResourceType=xyz, pageId=homePage, uri=/home/, ...
- 31.9k
1
vote
2
answers
550
views
How to add leading zero's to sequential file names
I have images files that when they are created have these kind of file names:
Name of file-1.jpg
Name of file-2.jpg
Name of file-3.jpg
Name of file-4.jpg
..etc
This causes problems for sorting ...
- 13
0
votes
2
answers
285
views
Grepping for the form action= part of html pages
I am trying to grep the parts of an html form, specifically the action part i.e. <form action = ….
I originally tried:
grep -E -e 'form\s*action\s*=.*[.]html' ./*
but it did not work (despite the ...
- 19.3k