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convert a column to row output?


 
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# 1  
Old 07-01-2010
convert a column to row output?

Getting tired of cut-and-paste...so I thought I would post a question.

how do I change this column output to a single row?

from this:

Code:
# vgdisplay -v /dev/vgeva05 | grep dsk | awk '{print $3}'
/dev/dsk/c6t0d5
/dev/dsk/c11t0d5
/dev/dsk/c15t0d5
/dev/dsk/c18t0d5
/dev/dsk/c7t0d5
/dev/dsk/c10t0d5
/dev/dsk/c14t0d5

to this:
Code:
/dev/dsk/c6t0d5 /dev/dsk/c11t0d5 /dev/dsk/c15t0d5 /dev/dsk/c18t0d5 /dev/dsk/c7t0d5 /dev/dsk/c10t0d5 /dev/dsk/c14t0d5



any assistance would be appreciated...

manny

Last edited by Scott; 07-01-2010 at 02:26 PM.. Reason: Code tags
# 2  
Old 07-01-2010
The easiest way:
Code:
# vgdisplay -v /dev/vgeva05 | grep dsk | awk '{print $3}' | tr "\n" " "

# 3  
Old 07-01-2010
One way: Purists will note that I output a spurious trailing space.

Code:
OUTPUT=""
vgdisplay -v /dev/vgeva05 |grep "/dev/dsk"|awk '{print $3}'|while read DSK
do
        OUTPUT="${OUTPUT}${DSK} "
done
echo "${OUTPUT}"

# 4  
Old 07-01-2010
also found another option w/out the trailing space:

Code:
$ vgdisplay -v /dev/vgeva05 | awk '{print $3}' |  awk 'END {print line}  /dsk/ { line = line " " $0 }'
 /dev/dsk/c6t0d5 /dev/dsk/c11t0d5 /dev/dsk/c15t0d5 /dev/dsk/c18t0d5 /dev/dsk/c7t0d5 /dev/dsk/c10t0d5 /dev/dsk/c14t0d5 /dev/dsk/c19t0d5

thanks for the replies Smilie
manny
# 5  
Old 07-01-2010
The one without the trailing space has a leading space !
# 6  
Old 07-01-2010
ooops, sorry.

another variation:

Code:
$ vgdisplay -v /dev/vgeva05 | awk 'END {print line}  /dsk/ { line = line " " $3 }'
 /dev/dsk/c6t0d5 /dev/dsk/c11t0d5 /dev/dsk/c15t0d5 /dev/dsk/c18t0d5 /dev/dsk/c7t0d5 /dev/dsk/c10t0d5 /dev/dsk/c14t0d5 /dev/dsk/c19t0d5

# 7  
Old 07-01-2010
Without leading or trailing space:
Code:
vgdisplay -v /dev/vgeva05 | 
awk '/dsk/{
  if (NR==1) {
    printf $3
    next
  }
  printf " " $3
}
END{print ""}
'


Last edited by Franklin52; 07-02-2010 at 06:28 AM.. Reason: Adding next statement

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