Shell Programming and Scripting

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Group 'group1' on system 'system01' is running.
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Group 'group2' on system 'system01' is running.
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Group 'group3' on system 'system01' is running.
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Group 'group4' on system 'system01' is running.
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declare -a arr=($(awk -v q="'" 'BEGIN{FS = q} NF > 1 {print $2}' file))

$ cat file
Group 'group1' on system 'system01' is running.
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Group 'group2' on system 'system01' is running.
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Group 'group3' on system 'system01' is running.
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Group 'group4' on system 'system01' is running.
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$ cat tester
#!/bin/bash

# Declare array
declare -A array

# row counter
row=0;

# Read file skip other fields so x or anything..
while read  x c1 x x c2 x; 

	do [ -z "$x" ] && continue; 

	# see what you are storing 
	echo $c1 $c2 $row; 

	# store whatever you want...removing single quotes 
	array["$row","group"]="${c1:1:${#c1}-2}"; 
	array["$row","system"]="${c2:1:${#c2}-2}"; 

        # Or you can remove like this ${c1//\'/}
       
 
	# increment counter..
	((++row))

done < "file"; 

# Access array for future use..
for ((i = 0; i < row; ++i)); do 
	echo ${array["$i","group"]} ${array["$i","system"]}; 
done

$ bash tester
'group1' 'system01' 0
'group2' 'system01' 1
'group3' 'system01' 2
'group4' 'system01' 3
group1 system01
group2 system01
group3 system01
group4 system01

ARR=( $(while IFS="'" read A B REST; do printf "%s " $B; done < file4 ))
echo ${#ARR[@]}
4
echo ${ARR[@]}
group1 group2 group3 group4
echo ${ARR[2]}
group3