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awk: assigning a shell variable in awk script


awk: assigning a shell variable in awk script

By : Harry Lim
Date : November 24 2020, 03:41 PM
will help you One way: Use the redirection inside your command and print your result in the END block. And use command substitution to read the result in a shell variable:
code :


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Assigning variable in shell script

Assigning variable in shell script


By : user3596274
Date : March 29 2020, 07:55 AM
I hope this helps . , Store it in another variable:
code :
...
tail -1 ~/NetBeansProjects/xyz/dist/newlog.log | grep -q "[INFO ] - Stream closed"
RES=$?
if  [ $RES = 1 ]
...
Assigning a command output to a shell script variable

Assigning a command output to a shell script variable


By : Dominieke Neasham
Date : March 29 2020, 07:55 AM
This might help you To assign output of some command to a variable you need to use command substitution :
variable=$(command)
code :
c=$(echo {b%?} |rev | cut -d '/' -f 1 | rev)
basename ${b} 
echo ${b##*/}
home1
b="/home/home1"
echo $b
/home/home1
b=${b//[[:digit:]]/}
c=$(echo ${b##*/})
echo ${c}
home
Assigning shell script execution result to variable

Assigning shell script execution result to variable


By : Ajinkya Rasane
Date : March 29 2020, 07:55 AM
may help you . Here is despcription of os.system():
code :
import subprocess
import json
result_process_output = subprocess.check_output("sh cmd_dtapi.sh", shell=True)
result_json = json.loads(result_process_output)
result = result_json["risk_of_disease"]
print "Result is : ", result
Shell Script assigning sql query to variable

Shell Script assigning sql query to variable


By : jinxy
Date : December 23 2020, 02:30 AM
it helps some times There is a way where you can run the query as follows :
Assume the query is "SELECT column1 from table"
code :
$count = $dbh->do("SELECT COUNT(*) from (
           SELECT column1 from table
       )");
if($count>1)
    do X;
else
    do Y;
Assigning a variable in a shell script for use outside of the script

Assigning a variable in a shell script for use outside of the script


By : Fotoke
Date : September 21 2020, 03:00 AM
seems to work fine A child process can't affect the parent process like that.
You have to use the . (dot) command — or, if you like C shell notations, the source command — to read the script (hence . script or source script):
code :
. ./mac.sh
source ./mac.sh
$ cat mac.sh
#!/bin/bash
echo mac=$(cat /sys/class/net/eth0/address)
$ bash mac.sh
mac=12:34:56:ab:cd:ef
$ eval $(bash mac.sh)
$ echo $mac
12:34:56:ab:cd:ef
$
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