Linked Questions
28 questions linked to/from Pass shell variable as a /pattern/ to awk
3
votes
2answers
13k views
How to pass shell variable to an awk search pattern? [duplicate]
In my bash script I have a variable that I am trying to pass to a pattern to search for using awk. However what I expected to happen is not working. I have the following text file (text.txt):
--------...
3
votes
2answers
11k views
How to insert bash variables in awk? [duplicate]
How to insert bash variables in awk (for example i need to do in in some for loop - like this: in first iteration use awk to search string by first column, next by second column and so on with using ...
0
votes
2answers
6k views
How to use a variable inside an awk statement? [duplicate]
I have a script like this
#!/bin/ksh
echo "Enter the matching pattern"
read pattern
path= /home/siva/
echo "Navigating to $path"
cd $path
cat filename|awk '/$pattern/ {for (i=1; i<=10; i++) {...
1
vote
1answer
3k views
make awk print the line that match a variable and the next n lines and use a variable in awk [duplicate]
With an array of elements, and an input-file I want to loop through the array and match each element with the input-file. I then want to get the line in the input-file where this element is occurring ...
-1
votes
1answer
1k views
AWK and Bash Scripting [duplicate]
How to use a value of a variable in awk? Something like this:
filename = "test.txt"
ls -l | awk '{ if ($9 == filename) print("File exists")}'
I can't use $ in awk to access the value of that ...
1
vote
1answer
706 views
Pass Shell variable to awk [duplicate]
I realize this has been asked many times and many of the answers seam well written, but I'm missing something with my little task. Trying to pass a Shell variable (an argument in this case) to awk to ...
0
votes
2answers
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 ...
2
votes
1answer
378 views
Pass parameter to Bash function which will serve as a pattern to awk [duplicate]
I would like to know how to pass a argument to a Bash function which would consequently serve as a pattern to awk. I have read several Q/As which tend to answer the same question, however, I am ...
1
vote
1answer
417 views
how to use variable with awk [duplicate]
we have the following file
cat /tmp/hive.conf
"hive-exec-log4j2" : {
"tag" : "TOPOLOGY_RESOLVED",
"version" : 2
},
"hive-interactive-env" : {
"tag" : "...
1
vote
2answers
474 views
how to awk user input [duplicate]
I'm trying to match a pattern and then print out two lines after it. I'm successfully able to do it with the following code.
awk '/'202404'/{c=3}c&&c--' consolelog.log > testing.txt
I'm ...
3
votes
1answer
90 views
Passing argument to AWK [duplicate]
I have the following AWK command which works well.
awk -v RS="\n+?[$]{4}\n+?" '/HMDB0000008/' test.xt
However what I want is to be able to call it from the command line and pass an argument ...
0
votes
1answer
164 views
Pass a variable in another variable within an awk [duplicate]
I have the below variables:
grep_line_new_file='create table "informix".issue'
new_file_below=`awk 'BEGIN { FS="\n[()]"; RS=";" } /$grep_line_new_file/ { print ")"$NF";"}' test`
Inside test file I ...
-1
votes
1answer
53 views
pass value to awk in shell script [duplicate]
So I have my targets array which is a bunch of IP read from a file, now I am trying to cat a file that contains my IP and results from ssh command, ut because I am trying 3 different passwords on ...
1
vote
1answer
46 views
How to make variable be taken into account [duplicate]
#!/bin/bash
awk 'NR!~/^(1|$q+2|$q+3)$/' deltay.txt > yota.txt
q is an integer obtain from a previous process in the script, and I need to erase lines one, the q+2 an q+3, but that command just ...
0
votes
0answers
27 views
pattern matching to content of variable using awk [duplicate]
**********NB -i have read previous posts that look like duplicates but I cannot get this to work, Id really appreciate an explicit answer **********
I know this is a duplicate but I have read the ...
58
votes
3answers
92k views
How to show lines after each grep match until other specific match?
I know that by using the "-A NUM" switch I can print specific number of trailing lines after each match. I am just wondering if it's possible to print trailing lines until a specific word is found ...
2
votes
2answers
22k views
awk + set variable inside the awk
the following simple bash script print the row number ( from the file - list.txt )
function get_row
{
[[ $1 = 1 ]] && awk '{print $1}' list.txt
[[ $1 = 2 ]] && awk '{print $2}' ...
5
votes
1answer
2k views
Using bash variable with escape character in awk to extract lines from file
I am writing a bash script (just learning bash) to extract some lines from a file based on two patterns. The first pattern is just a sentence ending in a colon. The second pattern is a * repeated N (...
1
vote
7answers
670 views
How do we use sed to replace specific line with a string variable?
Lets say for example I have a file.txt containing 3 lines:
hello
hello
hello
I have a variable called line=1 and a variable string substitute=hello1. I want to replace the string in the line ...
1
vote
1answer
3k views
use awk with input from a variable
i need to fetch n+9th line from the occurance of a specific word which is store in variable i from a file LIST.txt
Below is the command
Used_pages=`awk '/${i}/{nr[NR+9]}; NR in nr' LIST.txt`
it ...
1
vote
1answer
800 views
awk argument $1,$2 conflict with bash input arguments
I would like to add some awk commands to a bash script. The bash script takes a few inputs, and inputs are passed by $1, $2 and etc. When I call awk, I also want to use $1 to define a position in ...
3
votes
2answers
534 views
How to use command-line argument as awk regex matching expression?
I have the following awk script:
#!/bin/awk -f
BEGIN {
FS = "";
}
value ~ "MYVALUE" # silly test
{
print "1 - " substr($0, 235, 12);
}
$235 ~ "M" {
print "2 - " substr($0, 235, 12);
}
...
0
votes
2answers
816 views
How to grep variable pattern which is in first column [duplicate]
I want to grep variable pattern which is in first column.
$ cat test.txt
abc.xyz
abc.def
pqr.tap
pqr.abc
abc.mnp
mnp.abc
abc.pqr
abc.mob
If variable pattern is abc then output should be
abc....
0
votes
0answers
647 views
invalid char '@' in expression awk output
I have an awk command on ksh script, the command extract fields from a log file to then struct them in new one.
ultimate=$(grep -oP 'Time:\K.*' $log2 | column -t | awk '{print $3,"/","'"$month"'","/",...
0
votes
2answers
289 views
How can I search matching pattern (stored in a variable) in a file using awk?
I have a log file in which I need to check if there are any error messages, if there are, extract the error message to another file.
Like this I may have error file for the different file have ...
1
vote
3answers
96 views
Simple shell script unable to go through thousands of files; starts fine, but throws “unexpected EOF while looking for matching `”`" after some time
Shell Script in Question
Let me explain what I am trying to do by e.g. so you can understand better. Let's say I have 100 .torrent files in a directory. 2 of them will download xxx.epub and yyy.epub ...
0
votes
2answers
76 views
AWK different result
I was searching for List of Open Files based on Ips amd Processes. I used below command
for i in `sudo netstat -tulpna|awk '{print $5}'|grep -E "[0-9]{3}"|grep -v "^192\|10"|cut -f1 -d ":"`;do ...
1
vote
1answer
80 views
When using AWK with a variable pattern, can't get IF ELSE statement working
The AWK statement uses the variable $ip to search each line, but I need to print the variable $ip NOT FOUND in the ELSE statement for ips that are not found in the config.
Can't get it to work with ...