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How to store output of command to an array

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# 1  
Old 11-13-2011
How to store output of command to an array
Hello Guys,
I am trying to store output of command to an array and then want to print, but it showing an error that "bad substitution". I am not getting why it's happening.
Can anyone help me?
Code:
#!/usr/bin/sh
hr=0
min=0
i=1
last $1 | grep -w `date "+%b"` | grep -v '\(0[2-9]:.*\)' | grep -vw sshd | cut -
c 66- | tr -d "[ ]\(\)" | grep -v '[a-z].*' | while read line
do
        array[ $i ]="$line"
        i=$i+1
done
#print an array
for i in "${array[@]}"
do
    echo $i
done

Thanking You,
# 2  
Old 11-13-2011
This is the same problem you were having before. Using bash and processing piped output with a while read leaves any variables set or created inside of the loop unchanged or undefined following the execution of the while.

The bad substitution is probably the result of the array not being defined, though when I execute your code under bash it fails silently.

If you really must do the processing in script then you're probably going to need to redirect the output to a tmp file and read the lines into an array after the fact.
# 3  
Old 11-13-2011
Thanks Agama,

I am trying to do without any temp file. Is that possible in that case? I would really appreciate your help.

Thanking You,
# 4  
Old 11-13-2011
Thinking on it a bit, this should work without the tmp file:

Code:
#!/usr/bin/sh
hr=0
min=0
i=1
typeset -a array
o=$( last $1 | grep -w `date "+%b"` | grep -v '\(0[2-9]:.*\)' | grep -vw sshd | cut -c 66- | tr -d "[ ]\(\)" | grep -v '[a-z].*' )
array=($o)
echo ${array[0]}

for i in "${array[@]}"
do
    echo $i
done

exit

# 5  
Old 11-13-2011
Unforrunatly it's not working. I had tried before. It showing error "syntax error at line 6: `o=$' unexpected".
# 6  
Old 11-13-2011
@kasparov: you should tell what OS and shell you are running.

In any case, your script should works fine if /usr/bin/sh is substituted by /bin/ksh93 which unlike bash makes the right choice when selecting what element of a pipeline not to run in a sub shell.
# 7  
Old 11-13-2011
You could try the obsolete form with back quotes, but jlliagre has hit it spot on: what O/S and what version of the shell? Today many Linux implementations point /bin/sh to bash, but there's a chance it's not bash especially if it is generating an error with o=$(command).

Code:
o=`pipeline`
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