topic Re: Variable manipulating in Operating System - HP-UX

Variable manipulating

Ralf Buchhold — Mon, 05 Apr 2004 04:21:16 GMT

I hope somebody can help me:
My Problem:
from a variable with this content:
/dev/dsk/c0t0d0 /cdrom cdfs ro,suid 0 0
i need the:
/dev/dsk/c0t0d0
and:
/cdrom
in to different variables.
How can i do this?
Thank you

Re: Variable manipulating

john korterman — Mon, 05 Apr 2004 04:28:05 GMT

Hi,
# VAR1="dev/dsk/c0t0d0 /cdrom cdfs ro,suid 0 0"

# DEV=$(echo $VAR1 | awk '{print $1}')
# echo $DEV
# CDR=$(echo $VAR1 | awk '{print $2}')
# echo $CDR

regards,
John K.

Re: Variable manipulating

SureshKumar_2 — Mon, 05 Apr 2004 04:38:09 GMT

Hi

Is that file containing only one line or multiple line

here i am giving example for file containing one line.
*)to get /dev/dsk/c0t0d0:
cut -f 1 -d " "
*)to get /cdrom
cut -f 2 -d " "

If u have more than one line use,
*) extract the line comes with cdrom
cat | grep cdrom >
And use above cut to get from tmpfile

ALL THE BEST

Re: Variable manipulating

Jean-Luc Oudart — Mon, 05 Apr 2004 04:42:51 GMT

echo /dev/dsk/c0t0d0 /cdrom cdfs ro,suid 0 0
| read v1 v2 v3 v4 v5 v6

echo $v1
/dev/dsk/c0t0d0

echo $v2
/cdrom

Regards,
Jean-Luc

Re: Variable manipulating

SureshKumar_2 — Mon, 05 Apr 2004 04:45:59 GMT

Hi

Try this, if u want to extract Entire Col.

for first col.
#cut -f 1 -d " "

for 2nd col.
#cut -f 2 -d " "

If u want to extract only Both col. use character count option in cut respectively.

#cut -f 1,2 -d " "

d option for delimitor.
f option for field

Re: Variable manipulating

KapilRaj — Mon, 05 Apr 2004 05:02:35 GMT

echo $VAR |read VAR1 VAR2 VAR3 VAR4 VAR5 VAR6

VAR1 ---- /dev/dsk/c0t0d0
VAR2 ---- /cdrom
...
...

Regds,

Kaps

Re: Variable manipulating

Sanjay Kumar Suri — Mon, 05 Apr 2004 06:31:25 GMT

Exam Question. Do the following way:

var="/dev/dsk/c0t0d0 /cdrom cdfs ro,suid 0 0"
var1=`echo $var | cut -f1 -d " "`
var2=`echo $var | cut -f2 -d " "`

echo $var1
echo $var2

sks

Re: Variable manipulating

Nicolas Dumeige — Mon, 05 Apr 2004 06:37:41 GMT

var="/dev/dsk/c0t0d0 /cdrom cdfs ro,suid 0 0"
echo $var | read var1 var2 trash

echo $var1
/dev/dsk/c0t0d0

echo $var2
/cdrom

Re: Variable manipulating

Rodney Hills — Mon, 05 Apr 2004 08:52:58 GMT

ksh and posix shell can have array variables. So if you do the following-

str="/dev/dsk/c0t0d0 /cdrom cdfs ro,suid 0 0"
set -A ary $str
dev=${ary[0]}
mnt=${ary[1]}

HTH

-- Rod Hills