Echo output on separate lines

gaetan321 · 04-09-2019, 11:22 AM

Hi all.

I have to script the following to automate a report

Code:

#!/bin/sh

LOG=notification_check

RESULT=$(grep -B10 'notifications_enabled' /usr/local/nagios/etc/services.cfg |grep 'host_name\|service_description')
echo -e $RESULT "\n\v" > $LOG
cat $LOG

but the output is using a single line instead of separate lines

Code:

grep -B10 'notifications_enabled' /usr/local/nagios/etc/services.cfg |grep 'host_name\|service_description'

How can I output and echo the result with the same tabulation ?

Thanks
Cheers.
G

BW-userx · 04-09-2019, 11:28 AM

show output, and what you want as output

gaetan321 · 04-09-2019, 11:56 AM

Quote:

Originally Posted by BW-userx

show output, and what you want as output

grep -B10 'notifications_enabled' /usr/local/nagios/etc/services.cfg |grep 'host_name\|service_description' outputs

host_name Server1
service_description check-WIN-Uptime
host_name Server1
service_description check_WIN_CPU

The script outputs the result into a single line

host_name Server1 service_description check-WIN-Uptime host_name Server1 service_description check_WIN_CPU

How can I output into the same original format ?

BW-userx · 04-09-2019, 03:00 PM

the pattern looks like it gathers one match data, match data, So I put it in an array and printed it out as such. two pieces of information at a time.

Code:

#!/bin/bash

LOG=notification_check

#RESULT=$(grep -B10 'notifications_enabled' /usr/local/nagios/etc/services.cfg |grep 'host_name\|service_description')

#for test purposes already populated file with output
#host_name Server1 service_description check-WIN-Uptime host_name Server1 service_description check_WIN_CPU

RESULT=$(cat ~/output)
#echo $RESULT

#to blank out log file on each run. can be removed, of course. 
echo "" > $LOG

#put into an array
results=( $RESULT )
for (( i=0;i<${#results[@]};i++))
{
    echo "${results[i]} ${results[i+1]}" >> $LOG

    ((i++)) #add  one  to match array element positions

}
echo "START"
cat $LOG

my results

Code:

 
 $ ./printoutthis
START

host_name Server1
service_description check-WIN-Uptime
host_name Server1
service_description check_WIN_CPU

if someone else knows how to do this in awk or whatever else, more power to them. pls share.

gaetan321 · 04-09-2019, 03:43 PM

BW-userx, thank you so much. It does the job

BW-userx · 04-09-2019, 03:54 PM

That's what I'm talkin' about! enjoy. !

MadeInGermany · 04-09-2019, 04:27 PM

You don't need an array here.
You simply must quote $variables in command arguments!

Code:

echo "$RESULT"

echo is a command. The quotes prevent the shell from word splitting (your problem) and trying a glob match and eventual substitution.