All Questions
217 questions
0
votes
2
answers
69
views
Counting unique IP addresses per hour in existing log files
I am trying to determine the number of unique web visitors to my website each hour. The log files (access*.log) contain many lines looking similar to this.
192.168.211.85 - - [29/Sep/2024:10:17:02 -...
- 309
0
votes
2
answers
129
views
Displaying the sed command before its execution in a Bash script
I need advice on how to make every command I run in a Bash script first display itself and then execute. I created a simple function and a subsequent sed command to uncomment lines in the pacman.conf ...
2
votes
3
answers
434
views
Replace prefix string from lines in a file, and put into a bash array
In the file groupAfiles.txt are the lines:
file14
file2
file4
file9
I need a way to convert them to remove file and add /dev/loop and put them all in one line with a space between them.
/dev/loop14 /...
- 541
0
votes
2
answers
81
views
extract a column from the command output even if it blank bash
I am trying to extract 2nd column from a command output
For example:
$ sudo /usr/sbin/pvs
PV VG Fmt Attr PSize PFree
/dev/sdc1 vgswap lvm2 a-- 16.00g 0
/dev/sdc2 ...
- 1
0
votes
1
answer
169
views
Whats the meaning of this sed command sed '/^[[:space:]]*$/d'
I came across this sed command in a script to compare a machine's local binaries to GTFObins binaries.
for i in $(curl -s https://gtfobins.github.io/ | html2text | cut -d" " -f1 | sed '/^...
- 13
2
votes
1
answer
396
views
Escape special characters from variables [duplicate]
I have
#!/usr/bin/bash
search="ldo_vrf18 {"
replace="$search"' compatible = "regulator-fixed";
regulator-name = "vrf18&...
- 481
-1
votes
3
answers
168
views
Replace new lines at end for those lines whose 2nd field in colon separated file span over to multiple line
I have got multiple files with different set of contents but the pattern is same across mulitple lines in different files.
sample input file : cat -n test.txt
1 adjfkhjdhfkjd: ...
0
votes
1
answer
310
views
compare 2 csv files using specific column and ignore specific string
My OS: RHEL7.X
I've a csv file with 3 columns, like so -
#######Category: Fruit
Berries are fruit,04415bef-8c82-4672-848a-9ac80035040a,"Blah/Blah And/More/Blah"
Apple is a fruit,073c6bf3-...
- 553
0
votes
0
answers
27
views
sed used in the function of the bash script fails [duplicate]
I use this bash script sed_no_ocr.sh which has no x property (i.e. ls -al sed_no_ocr.sh shows -rw-r--r--):
#! /bin/bash
file=$1
concatenation(){
echo "sed -i -r -e 's/($1) ($2)/\1\2/;p' $file&...
- 173
0
votes
2
answers
141
views
Remove command line options (mode-flags w/ options) from single line string in file
File mkisofs has the following one line string:
xorriso -as mkisofs -r -checksum_algorithm_iso sha256,sha512 -V 'Debian 12.0.0 amd64 n' -o /srv/cdbuilder.debian.org/dst/deb-cd/out/2bookwormamd64/...
0
votes
2
answers
130
views
Is it bad practice to use sed to pass a variable through to another script? [closed]
There are two shell scripts.
One of which is a source file source.sh. This source file will exist for multiple people each with their own directories.
name = "foo"
The main script main.sh ...
- 5
-1
votes
2
answers
110
views
Combine multiple lines starting with same phrase into one
I'm writing a Bash script to convert Arch Linux packages into a format for a package manager I'm writing, and I have to convert some metadata files into file format .toml. Previously, I've been using ...
3
votes
2
answers
204
views
Indent Fortran source code, propagate indentation down to unindented special lines
I'm trying to write my own script to improve some auto-formatting before commiting to a remote repository. I use indenting guides in my IDE and the autoformatters available for my language (FORTRAN) ...
4
votes
1
answer
1k
views
Execute the output of sed as a bash script that takes inputs
sed 's/docker/sudo docker/g' ./generate.sh | xargs bash
I want to run a script generate.sh with all docker calls replaced with sudo docker, as just as it would have been ran if I called bash generate....
- 41
2
votes
3
answers
1k
views
How to use sed with variable, when the variable is random (certificate) text
I'm trying to make a bash shell script that mounts, from some pre-obtained variables, a text file.
For this I use sed, changing the flags of the file by the desired:
sed "s/this is a line in text/...
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