All Questions
21 questions
0votes
2answers
44views
Capture and print on the exact match from a file
I am trying to use grep to match only a specific part of a row in a file. The file is a huge csv file with some columns containing json with commas so it is hard to figure out which column what I am ...
- 161
1vote
1answer
112views
How to delete a string in my files?
So I want to match all below then remove those lines of string. [MTT-5634](https://my.atlassian.net/browse/MTT-5634) [MCC-123](https://my.atlassian.net/browse/MCC-123) [MTT-7965]: https://my.atlassian....
0votes
2answers
207views
move recently created files matching a pattern from one folder to a different one
I am looking for a bash script example which does the following: I have files being written under /tmp folder I do at the xterm prompt, ls -ltr which gives me a list of recent files such as: ...
- 3
0votes
1answer
418views
Passing arguments into a glob pattern within a script
I have a script called get_numbers.sh, which I want to use to extract data from .pdf files labelled sequentially by date, using pdfgrep. Let me simplify my problem to what I believe are its essentials:...
- 153
1vote
2answers
414views
How to introduce support for command line options in a script that is written to use positional arguments?
I have a script that is currently used with positional arguments, like this: ./script.sh fname lname address I want to also support ordinary command line options when I call this script, so that I ...
- 113
0votes
1answer
163views
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 "/" ...
1vote
1answer
105views
Best way to access files inside of directories with common part of dirname
the title is not self-explanatory at all, but I don't know how to formulate it correctly. I will explain with an example. I have a directory structure like this: results/ test_0_part1_x000/ ...
- 111
1vote
2answers
332views
Finding a string in a txt of house addresses with number ranges by passing in exact number and street names
Context I'm a postal worker (mail sorter) and am trying to write a bash script which allows me to input an exact street address and first couple letters of a street name, and have it return the ...
0votes
1answer
1kviews
macOS bash script regular expression not working as expected
I've been out of programming for more than 10 years. I have a text file that I'm trying to read the Mpbs value for the upload and download speed. Server: Iomart - Maidenhead (id = 3839) ...
2votes
3answers
1kviews
Shell script, get/extract mac address from console output of command after "MAC: "
I'm trying to automatically pull out the mac address of a arduino device using a shell script, and need some help how to do this. This is the output returned by the command: Opening /dev/cu....
- 2,725
1vote
1answer
88views
Trying to parse a string in BASH for [ - _ ]
I have a BASH script that allows a user to specify a jobname. Right now we except everything. We feed this jobname into another executable that can only accept the following formats: job_name, ...
- 63
8votes
2answers
3kviews
How to write regexp literal in match expression?
This question is about the proper way to write regular expression literals in a match expression under bash. In zsh, the match below succeeds, as I expected: % [[ ' 123 ' =~ '^ [0-9]+ $' ]]; echo $? ...
- 16.2k
0votes
2answers
358views
Syntax for regular expression searching for DNA codons
I have to write a script for an assignment which will take the file name as a command and output every unique 3 base codon in the file and how many times it occurs in descending order. The script has ...
4votes
2answers
15kviews
One liner matching filenames with regular expressions?
I have a small script. #!/bin/bash # test for regular expressions to match... DIR="/search/path/" NAME="FOO[0-9][0-9]_<bar|dog|cat>" for FILE in `find ${DIR} -maxdepth 1 -type f -name "*\.[dD][...
- 443
-1votes
2answers
152views
Using regex in the heredocument redirect/append line, to target specific "sets" of directories
I need a way to target all sub directories under public_html which ends with .com or other TLDs like .biz or .co.il I might list, in a heredocument. This my hereoducmnet inside an pushd-popd - if-fi ...
