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thanks Don Cragun.
you just give me hint on how i should proceed with my several cases and i just made it. thanks.

thanks to RudiC on the example. i have fun with it.

now i can produce what i...

what is the content is not one field?
example
S 0.0 0.0 (reg, inst050)
kfdasdf dsaf
easd sadfas
ffadsfasfdsadsa dsafdsafas
dd8385fdsa asdasdfaf2432vdsaf
dsafcfasfdsa f32f32asf322dsdsaf

hi Rudic
that is very powerful single line solution, would you mind to explain to me how it actually does?

i had anther post 6 hrs ago with different question, and the solution was with sed. that is the reason i would stay with sed for my solution but in this example, the resources i could find was mostly...

thanks. the output results should look like this
S 0.0 0.0 (reg, inst050)
c
d
e
f
k

S 0.0 0.0 (mux, m030)
g
k
r
s
v
x

S 0.0 0.0 (reg, inst020)
m
n
q

S 0.0 0.0 (reg, inst050)
k
e
f
d
c

S 0.0 0.0 (mux, m030)
k
g
r
s
x
v

S 0.0 0.0 (reg, inst020)
q
s
n
m

very informative. i will keep improving on sed skill. thanks for motivating me up with the solution.

i try to do some modification on top of your first solution. it worked but i will keep improving on that.
thanks

echo "file 1123.x July 23:222...

thanks.
but i think my explanation was wrong in the first place,
actually i wanted to output only 1.7 (remove everything but 1.7)

cat file.txt
file 1123.x July 23:222 /cd/hh2/k39/ss2/f7d8d9d8e6r5t4s/dd2/e/s7a/s7a2afa5017d8b975-1.7-1395610245-b22e19bbc477b134

i wish to only extract out the 1.7 (anything within the first - -)...

cat file1
a b c d e f

this is what is in my script

foreach i (`cat file1`)
foreach j (`cat file1`)
#do something here
end
end

basically i want to compare ab, ac, ad, ae, af, ba, bc,...

updated in first thread. thanks


erm.. i miss up some string in the first post.. i have modified my file

cat file
time="north_south_east_west_08:00" location="A" start="left" status="ok" end="north"
time="north_south_east_west_12:00" location="C" start="right" status="ok" end="south"...