bash padding

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# 1  
Old 07-25-2011
bash padding

Hi all

Is there a way to pad the output of a bash script
see that code below
for i in `sed -n '/Start Printer/,/End Printer/p' /u/ab/scripts/hosts.conf | awk '!/^#/ {print $2}' | egrep -v 'broke|primera' `; do 

    pages=`snmpget -Ov -v1 -c public $i sysLocation.0 | awk '{print $2}'`
    echo $i $pages

so it will output

prawn 211sa

i want to be able to pad it so it is alligned nicely


prawn       211sa
octopus    203ms

many thanks

# 2  
Old 07-25-2011
Use printf instead of echo:
printf "%-10s %s\n" "$i" "$pages"

# 3  
Old 07-25-2011
thanks worked like a treat, lastly ( casue i am coming to the end of my programming knowledge) if i want to put some error checking in, i get one result

Timeout: No Response <hostname>

is there a way i can just get it to spit out a message

<hostname>    hostdown

or something similar,

btw i have made $i the hosthame

# 4  
Old 07-25-2011
Hi, try (quick and dirty):

set -o pipefail
if pages=`snmpget -Ov -v1 -c public "$i" sysLocation.0 2>/dev/null | awk '{print $2}'`
  printf "%-10s %s\n" "$i" "$pages"
  printf "%-10s %s\n" "$i" hostdown
set +o pipefail

Last edited by Scrutinizer; 07-25-2011 at 02:17 PM..
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