All Questions
12 questions
-1
votes
2
answers
67
views
set output into variable from grep from input variable
whats wrong with this bash script:
acme2=$(dig txt @$1 _acme-challenge.$1.de)
acme3=$(echo $acme2 | grep "^_acme") ...
- 1
0
votes
1
answer
168
views
Filter directory tree and create bash menu from results
I have a Google Drive folder in the cloud that I sync with my server to backup and restore a WordPress web directory and MySQL database dump and I accomplish this with rclone. I am able to see the ...
- 67
0
votes
1
answer
3k
views
bash script - how use a $variable in grep
I am writing a simple bash script where user input the domain name (example.com) and it greps the email address from whois command output.
I want only grep the email with the same input domain (xxx@...
- 3
1
vote
2
answers
3k
views
grep giving no output for a directory passed in a variable
I am attempting to write a bash script that searches contents of files in a specified directory tree for the presence of a specified substring.
Using grep's recursive function alone is not sufficient,...
- 197
5
votes
3
answers
4k
views
Iterate lines of string variable in bash
I have a script where I want to list USB devices using the command lsblk.
The command:
$ lsblk -o NAME,TRAN,VENDOR,MODEL | grep usb
which results in
sdb usb Kingston DataTraveler 2.0
sdc usb ...
- 12.8k
1
vote
1
answer
1k
views
Store multiple grep in one command output to a variable
I am trying to get a list of IPs that are UP, so used nmap to first save all of them in a text file:
nmap -v -sn 10.10.10.1-254 -oG hosts.txt
Now I want to run another nmap command on these IPs, so ...
- 25
1
vote
1
answer
296
views
Marking a command as a variable in order to be reused within piped or separate commands [duplicate]
In Linux, would it be possible to create a multi-pipe command, serving the same type of command ie: grep however different output alteration done to it?
Strict example:
grep 10-Feb file.txt | awk '{...
- 11
0
votes
2
answers
1k
views
using awk with variables [duplicate]
I am making a word list from all the words typed into a program that will be working with the text entered into it. I want to use a stream editor like sed or awk to search the first word of every ...
- 1
4
votes
2
answers
4k
views
Combine multiple grep outputs in a variable
Basically I have below scenario e.g.
grep 'test: \K(\d+)' $file => 15
grep 'test1: \K(\d+)' $file => 20
Is there any way to store result of both commands into a variable like with comma as separator,
...
- 651
2
votes
3
answers
3k
views
Split command and arguments, and put into variable in a bash script
I have a script that repeats the same (very long) grep command many times. I want to make the script more readable by cutting the line length, so I tried to put parts of the command into variables.
...
- 65
3
votes
3
answers
113
views
How can I base the file name off of an already existing variable?
I'm using this to delete lines that don't match a pattern:
$ egrep "pattern1|pattern2|pattern3|pattern4|pattern5"
But now I need to do it automatically, so I'm setting a variable like this:
$ catTMP=...
- 11.9k
8
votes
2
answers
10k
views
What's the most efficient way to grep for two completely separate things and assign the values to separate variables?
CentOS 6.x
I want to take the output from curl, grep for two completely separate strings, and assign their respective values as variables. What is the most efficient way to do this (without writing ...
- 9,100