All Questions
33 questions
2votes
3answers
86views
Printing a specific section everytime search results are matched
I have a pretty basic text file on a Linux machine that has stuff like Chapters, Dialogues and References. This is what it looks like Chapter: 1 One: Birds and Trees Birds are beautiful and trees ...
2votes
5answers
332views
Extract lines from indented output
I'd like to parse parses the output below (from ddcutil) in a shell command: Model: MQ780 MCCS version: 2.1 Commands: Op Code: 01 (VCP Request) Op Code: 02 (VCP Response) Op Code: 03 (VCP Set)...
- 131
0votes
1answer
5kviews
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 ...
-4votes
1answer
637views
Edit ntp.conf file using bash script to comment and replace lines
The output of current /etc/ntp.conf file in Debian 11: # /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help driftfile /var/lib/ntp/ntp.drift # Leap seconds definition provided by tzdata ...
- 546
0votes
1answer
2kviews
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
0votes
1answer
182views
grep double quoted string along with simple string from file
Below is the output of pg_ctl -D $PGDATA start > /tmp/startup.log command to check if service is already running. FATAL: lock file "postmaster.pid" already exists Above is the string/...
-1votes
1answer
357views
Copy only specific text from a file to another
I'm working on a txt file that's structured like this: ; $16 dc.b $FF ; $17 dc.b $FA dc.b $65, $05 dc.b $F6 dc.w $0032 ; => Event1 dc.b $FF ; $18 ...
1vote
1answer
655views
How to replace special characters in BibTeX (e.g. {\'{o}} = ó) within a shell script?
Does anyone know of any utilities or have experience converting special characters in a BibTeX file to its proper unicode equivalent in a bash script? Trouble is I can't even find a full list of the ...
0votes
1answer
735views
How to extract max value among values between 2 words with multiple occurrence from input string using shell script
I want to extract the maximum temperature value from the output of a command, which I store in a shell variable as follows: res="$(get temperature all)" where the result looks like Device ...
1vote
2answers
2kviews
How can I delete everything after a word from multiple line in a file
In the following file: semi1245 5465 and taxes ?>:" foo 214 sdnfv 1>?<: Wed dsfsdf 46 and gsdgsd blah and blah taxes foo 214 sdnfv 1>?<: Wed sadfaads I want to delete ...
- 21
0votes
0answers
1kviews
Commenting out a specific host configuration in a Nagios configuration file
I have lots of Nagios configuration files like the one below in a directory, and I need to remove a host from monitoring. define host{ host_name nmo use aix-server alias hostgroups +...
0votes
0answers
358views
Remove all words from a file except certain words
I have a file which represent a list of SQLs where caluses. I want to remove everything that is not the columns names, and, or and where(case insensitive). In addition if it can also remove new lines ...
- 1,395
-1votes
2answers
348views
grep pattern next two lines and discard the pattern with one line
I have a file something like this: dn: danan cn: danian cn: danian1 dn: danian2 cn: danian2 dn: danian3 cn: danian3 cn: danian4 all I want to do is grep the pattern "dn:" and print just the ...
2votes
2answers
310views
deleting characters from expression using sed
I have a string in the form |a Some text, letters or numbers. | Some other text letters or numbers |b some other part of text |c some other letters or numbers notice the bar can be on its own, as ...
-2votes
1answer
3kviews
Grep and filter IP from text file
I had a log file but I want to extract specific ip from the file the log file shown as below for the logfile i only want to get the first part of IP of every line how every I try command below it ...
