All Questions
28 questions
0
votes
2
answers
124
views
Remove and add at the same time with sed
I have an variable in my script which I want to change:
read -p "Enter the name of city: " city
if [[ $city =~ Liverpool ]]; then
sed -i -e "/\$type\_of\_city =/ s/= .*/= ${city}/&...
- 17
0
votes
1
answer
109
views
sed's regex for replacement
I am creating the script which checks what is the user input and based on that this value is replaced in the file.
So far I have (but it does not work):
#!/bin/bash
read -p "Type your domain: &...
- 17
-2
votes
2
answers
1k
views
Generate strings from regular expression in bash
How in Bash to generate a string given by a regex expression and pipe it to another command?
For example:
> $RANDOM | regex "{abcdef\d}[8]" | grep "1{3}" | less
I did not find ...
- 99
0
votes
1
answer
5k
views
add a new line after a specific string in a file? [duplicate]
Right now I'm using
echo sed '/\Random/a \
newly added line' info.txt
to append some text to a file but I also need to add text below a certain string let's say random, I know it is possible with ...
0
votes
1
answer
2k
views
RegEx to extract file paths from a logfile
I need to get the file paths from a log file. I thought I will try this with regex.
A file path would look like this:
75/751234/751234V0001_test-tag1-tag02-75x75_01.jpg
I'm not a pro in Regex, so I ...
- 15
6
votes
8
answers
4k
views
Use awk to delete everything after the ","
I have a variable, var, that contains:
XXXX YY ZZZZZ\n
aaa,bbb,ccc
All I want is aaa in the second line.
I tried:
out=$(echo "$var" | awk 'NR==2{sub(",.*","")}' )
but I ...
- 147
0
votes
4
answers
6k
views
How to extract a portion of an XML tag value in a Bash script
I have a XML file like this (A.xml) :
<?xml version="1.0"?>
<RunParameters xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-...
- 529
0
votes
1
answer
163
views
how to use xargs to extract a list of names from IRC
Using the finch IRC client, I copy/pasted a list of names to names.txt for processing.
Basically, the names are seperated by spaces. Many of the names will have special characters like "/" ...
0
votes
3
answers
317
views
Regular expression for a string
Hi I have a md file containing the below string and I want to write a regular expression for this.
Conditions
The id will be anything.
The type will be youtube,vimeo etc
ID and type are mandatory ...
0
votes
2
answers
131
views
Print expression with [ ]
I have an input in form A[BCDE]GT.
I would like my output to be:
ABGT
ACGT
ADGT
AEGT
I have tried to use echo, printf, trying to find something that might work.
Does anyone know some command that ...
- 1
1
vote
1
answer
650
views
How to replace special characters in BibTeX (e.g. {\'{o}} = ó) within a shell script?
Does anyone know of any utilities or have experience converting special characters in a BibTeX file to its proper unicode equivalent in a bash script? Trouble is I can't even find a full list of the ...
- 11
3
votes
1
answer
15k
views
Find Duplicate/Repeated or Unique words spanning across multiple lines in a file
Problem
Is it possible to print repeated words that are not unique and spanning across multiple lines? not just unique words within singular lines.
Previous work
There's this question which solves ...
- 221
0
votes
2
answers
2k
views
And operation and case insensitivity in awk regular expression?
I'm trying to match filenames that contain two text patterns but the matching process should ignore case. Neither of the following regular expressions work:
Setting the awk variable 'IGNORECASE' to a ...
- 1,166
-2
votes
1
answer
492
views
Bash Script general questions [closed]
The first part of what i am mucking around with simply creates a folder entitled command_manuals that contain text file copies of all the commands available at the bash shell, the filenames which are ...
- 181
0
votes
3
answers
3k
views
In a bash shell script, how to rename multiple files, keeping only the numbers and the extension of the original file names?
I have a directory with a bunch of files with names like this:
generic name- dd -01 _.txt
generic name- dd -02 _.txt
generic name- dd -03 _.txt
generic name- dd -04 _.txt
And I want to rename all of ...
- 103