Questions tagged [grep]
grep is a command-line utility that is used for searching text.
613
questions
2
votes
1answer
32 views
Asterisk is not working in Ubuntu 20.04 [duplicate]
After switching from 18.04 to 20.04, I noticed that the asterisk thing doesn't work.
For example: If I want to remove all nvidia packages, I type in sudo apt remove *nvidia* and apt removes any ...
0
votes
2answers
41 views
Can i use grep to search words on the content that i already have in terminal [duplicate]
I am new here and in the Linux world. So i am wondering if it is possible to search for a word in the content that i already have in my terminal.
Thanks in advance
0
votes
1answer
22 views
How do i apply a command to each line in the output from pipe and add all those numbers?
I have a command that outputs the following file sizes in multiple lines:
32G
16K
2M
and the requirement is to convert them into bytes by using the command numfmt and add all the bytes:
...
3
votes
2answers
105 views
Differences between grep, fgrep and egrep
What are the differences between grep, fgrep and egrep? What are some examples of using them differently?
1
vote
2answers
38 views
piping grep to another grep doesn't work as expected
I'm using grep on Ubuntu Desktop 20.04.
I want to get player movements from gnuchess game by using grep each turn.
The first command i used is this :
gnuchess -mq | grep -a "Black ([0-9][0-9]*) : [...
1
vote
2answers
44 views
Using grep or find to get all files created in 2018 with “log” extension [closed]
Directory contains catalogs that have the following format: «20180201».
I want to Get the list of all files created in 2018 with the "log" extension and their sizes.
Can anyone explain me this?
1
vote
1answer
128 views
Why should apt-key output not be parsed?
To validate that the docker gpg key is installed, I ran:
sudo apt-key fingerprint 0EBFCD88 | grep "9DC8 5822 9FC7 DD38 854A E2D8 8D81 803C 0EBF CD88"
Which resulted in the following output:
...
0
votes
0answers
45 views
need help- awk solution? - FileA string search column -> for new search in FileB ->grep
Here my problem :
I have two files fileA and fileB, and a folder that contains the test files with component names
I have to extract column1 from fileA if another column (can varie) contains ...
0
votes
1answer
24 views
How to search start and end with square bracket with multiple line
Text have
[{hello=(1+2-0),
hello2 = 1}]
But are in two or three multiple lines when start with [ and end with ] are in different line
How to extract like grep for this multiple line pattern?
0
votes
1answer
57 views
Creating/importing iptables rules to ufw
Thank you very much for your time in reviewing my issue.
I am currently trying to convert the following iptables to ufw:
iptables -A INPUT -p tcp -s 127.0.0.1 --destination-port 443 -j ACCEPT
...
0
votes
0answers
44 views
I can't get of this error and end up in tty mode after I start my system
/var/lib/dpkg/info/passwd.postinst: 21: grep: not found
groupadd: group 'shadow' already exists
Group ID 42 has been allocated for the shadow group. You have either
used 42 yourself or created a ...
0
votes
1answer
33 views
How do I use string variable (which contains double quote) in grep
I have the following bash code:
DNS_RECORD_NAME="\"_acme-challenge\""
linode-cli domains records-list 1020562 --pretty --json |
grep '"name": $DNS_RECORD_NAME'
The output should be like ...
1
vote
2answers
97 views
find grep -E gives error: find: unknown predicate `-E'
I am running the command (on Ubuntu 18.04)
find . \| grep -E "(\_\_pycache__\|\.pyc\|\.pyo$)" \| xargs rm -rf
and I get the error
find: unknown predicate '-E'
I used to run this command on ...
1
vote
1answer
125 views
Filtering the lines which are greater than a percentage value
Hello i need to filter lines which are greater and equal than 85%.
I need to filter according to Forward: Score line and end of the percentage of that line.
Example file:
Scores for this hit:
>...
0
votes
2answers
40 views
How to arrange every n rows into columns using awk
I have a tab-separated data like this:
a 2
b 3
c 4
d 6
e 8
f 9
g 10
h 11
i 12
...
My desired output should look like this:
a 2 d 6 g 10
b 3 e 8 h 11
c 4 f 9 i 12
How can I do this, for instance ...
1
vote
1answer
79 views
I am trying to use the grep function in a script but it is not working, Although it is working in the terminal
I want to count the number of the G8LE word in my file so I opened a terminal and I used:
grep -o -i G8LE C60_TAPC_GRM_box.gro | wc -l
and it worked.
I tried to write a script composed of many ...
1
vote
2answers
130 views
How to grep (print only) lines starting with uppercase-lowercase pattern?
I have a command that prints lines in format "Name:nickname". But since it is an output from getent, it also contains some lines which are not names.
However, they all are either only uppercase or ...
0
votes
2answers
88 views
Process id is constantly changing, and it can't be killed with name
I'm working with Ubuntu 16 through SSH, and facing an issue with it. I want to kill the process but can't find a way because it keeps changing the PID every time.
I'm using this command to check the ...
0
votes
1answer
34 views
Grep from nginx server files, but exclude www.domain.tld
I have a command in a bash script like this, to get me an array of all the domains on my webserver.
domains=($(grep -rnw '/etc/nginx/sites-available/' -e 'server_name' -l | xargs grep -e 'server_name'...
0
votes
0answers
32 views
Find process started by Autostart (Redshift)
I've tried pgrep redshift, pgrep -f redshift, ps -ax | grep redshift, ps -elf | grep redshift, ps -ax -u root -U root | g redshift, systemctl | grep redshift all without finding the process, yet ...
0
votes
1answer
34 views
in VI mode i want copy particular specific lines from. log, .txt file
I have files which contain more than 2,00,000 lines in file i. e. abc.log file in that I want to copy line 600 to 750 and 40,000 to 60,000 in VI mode and paste new txt files
0
votes
0answers
36 views
grep a series of amino acid residues?
I have a large PDB file. I would like to grep lines with a sequence of amino acids from it. A part of the file is given below. I want a separate file (dat or txt) with th sequence ex. ALA-LEU-THR-ARG. ...
0
votes
2answers
27 views
how do I grep specific pattern from a Line using grep command?
to be more clear, I need to get the used space percentage (only the percentage without the other content in the line< of VOL (line 7)
Using grep command*
1
vote
1answer
77 views
Using AWK, how to use tabs instead of Space as field seperator?
I have the following fields:
Name<tab>City<tab>Phone Number
If I use to awk, it returns only first name ("Muhammad"), when name is "Muhammad Tahir".
How can I use awk with grep so it ...
2
votes
2answers
133 views
The same string twice in the $PATH environmental variable
When I run $PATH on my terminal in Ubuntu 18.04.3, it displays the following:
/home/ubuntu/bin:/home/ubuntu/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/...
0
votes
1answer
38 views
Search number list in multiple files and print
I am trying to find a few numbers listed in a file and their next +16 rows, from a bunch of files in a folder.
Print or store output in a file, but the command is not displaying any output
for i in ...
0
votes
2answers
133 views
grep / sed / awk / count between two lines in file not whole file
I have this file on my laptop /etc/dbus-1/system.d/org.freedesktop.thermald.conf:
<?xml version="1.0"?> <!--*-nxml-*-->
<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus ...
0
votes
1answer
79 views
grep error only when creating variable out of results
I'm parsing some json in bash. If I do this at a bash command prompt:
cat junk|grep -Po '"loc":.*?[^\\]",'
It returns:
"loc": "21.0393,105.7666",
But, if i do this to set a variable with the ...
0
votes
1answer
32 views
How to list all files in a specific directory that starts with 'sh' including inode number in one line
Assuming I'm in the home directory
I'm trying to list all the files in /etc to show all files that start with sh along with the inode number
I tried the following:
sudo find /etc -name 'sh*'
# this ...
1
vote
2answers
68 views
How to extract strings that appear more than once?
I want to extract from a file all the strings starting with 'File:' and ending with '.png'. I'm running the command
grep -oE 'File.*\.png' list.txt
But this gives me a single long string starting ...
1
vote
1answer
71 views
More efficient way to find content of files within millions of files
We currently have a series of files ordered by date, by type and then individual XML files containing details, with the basic structure as:
2020-01-01/
FR_abc
FR_abc_datetime_random.xml
...
9
votes
1answer
406 views
How to pass list of names to be searched by grep using xargs?
I have a text file containing names (nameslist.txt) and I want to read them using cat and pipe the result with xargs to a grep command, so that grep checks the existence of each name that it receives ...
1
vote
1answer
45 views
service --status-all | grep <anything> always returns [ ? ] entries [duplicate]
Trying to get the state of a service that is running (or not). I use service --status-all | grep <service> and no matter what I enter for <service>, I always get:
[ + ] <service I ...
0
votes
3answers
124 views
How to copy/move files with more than two keywords
I have a file list like this (long list, not all):
And I want to filter the files with keywords "QM" and ".h5", so I type ls|grep "QM"|grep "h5" and it shows these (what I need)
So basically I want ...
0
votes
2answers
99 views
How to calculate average of 2nd field from files?
I have a file and it consists of two fields.
The first field format is "%FT%T".
Sample data:
2019-01-01T00:00:00 4.8
2019-01-01T01:00:00 5.1
2019-01-01T02:00:00 5.4
2019-01-01T03:00:00 5.7
2019-...
0
votes
0answers
33 views
Search a list of unic values in another list. Linux
Im trying filter only specific values in a very long list with repeated values.
The long list:
ASUR B 356.660
FEMSA UBD 181.670
AMX L 15.060
ASUR B 356.290
ASUR B 356.480
WALMEX * 56.510
...
1
vote
1answer
62 views
Grep the contents of a file for contents from another file one at a time
I am using
grep -o <string> <filename> | wc -l
to count the number of times <string> occurs in the file. I now need to extend this such that the string is from a list of items in ...
-1
votes
1answer
48 views
script to copy multiple files from multiple directories to one of the folder/directory
I'm having five different directories in the home path which contain some files in all directories, as shown below.
home/dir1 contains:
abc121219.txt
kucj.txt
gtuj120518.txt
gdkmcg.txt
such.txt
...
3
votes
2answers
170 views
How to insert filename by changing format to same file?
I have many files. File format is year(4-digit)month(2-digit)day(2-digit)
Sample filenames:
20150101.txt
20150102.txt
Content of sample filenames
00:00:13 -> 001528
I want to extract data as ...
1
vote
2answers
269 views
how to find or list file and directories which having size more than 100mb
How to find or list file directories which having size more than 100 MB
I'm using du -sh* to get the size of file but my system don't have permission
6
votes
2answers
649 views
How to grep words from a single string matching a pattern?
Will anyone guide me to grep only words containing pattern _ARA from the below single string.
String:
LINK:['IM219MIR_ARA1','IM18Q4_ARA1','SM18Q4_ARA1','IM18PLANNING_ARA1','IM118Q4DYNVA_ARA1','...
4
votes
2answers
698 views
How to read .json to output an specific number?
Hello I've been using this:
curl -s "http://api.openweathermap.org/data/2.5/forecast?id=6361046&APPID=6be5e3a6e62680c28044791e8fc7b568&units=metric" -o ~/.cache/weather.json
to write a ...
1
vote
2answers
221 views
How to grep for “STRING1” but skip if the line contains “STRING2”?
I want to search for "STRING1" using grep but to skip if the line contains "STRING2". How can I do it?
2
votes
1answer
87 views
Unzip a .zip file to all directories that contain a .php file that contains the text “house” inside?
How to unzip a .zip file to all directories that contain a .php file that contains the text "house" inside?
Something like:
grep -rl --include='index.php' 'house' /directory/path/of_the_index_file* |...
1
vote
3answers
80 views
How to grep lines which doesn't contain words with certain character except certain instances of words with that character
I have very long file.txt which, among other hundreds of lines, contains lot of lines like these ones:
CD H1
CD H123
CD C2
CD D1
CD H2FOO
CD HXY
I want file which doesn't contain lines with ...
0
votes
0answers
97 views
Grep search files using a list of keywords
I've build this command up from searching questions here. It works if I supply the keyword manually, e.g.
while read line; do grep -wFrIin "keyword" --exclude-dir={.git,target} --include=\*.{java,ts,...
2
votes
1answer
31 views
How to list also two lines after a grep match?
grep 'STRING' filename
searches the file for STRING and lists the lines that contain a match.
How can I also list two lines that follow the match?
1
vote
3answers
175 views
how to grep two paragraph from file?
i have file "test_file.txt". My output must contains all"IP ADDRESS" and "MONTHS OF 2017" from file test_file.txt.
Server$
Server$cat test_file.txt
IP ADDRESS:
1. 172.17.17.17
2. 172.17.17.18
3. ...
0
votes
1answer
31 views
grep a word/number between two specific characters
When you ping you will get the ip between () , for e.g : (10.10.10.10)
and after the ip there are (number) for e.g : (10.10.10.10) 56(84)
so how i can get the ip that is between the () ? and without ...
2
votes
1answer
2k views
List certain installed packages
I am trying to see whether I have installed certain packages. I figured this would work
apt-get list --installed | grep "xxx"
but it doesn't. Any ideas?
Thanks in advance
