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Shell Programming and Scripting

capturing info between words.

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# 1  
Old 04-29-2010
capturing info between words.
Dear Friends,
I am facing 2 problems while writing a script
1) I have a flat file and I want to captur specific information from it.

Example
I have this string in the file

PACK: P42 77 UNPACK: MHTT DMK

I want to capture whatever is between word PACK: and word UNPACK: including spaces.

Expected o/p
P42 77

2) I want to capture next up to 20 characters appearing after pattern UNPACK: including spaces.

Example:
I have
PACK: P42 77 UNPACK: MHTT DMK

Expected o/p
MHTT DMK



Kindly guide me in captuing it.
Last edited by anushree.a; 04-29-2010 at 09:48 AM.. Reason: Code tags, please!
# 2  
Old 04-29-2010
Code:
# eval $(echo PACK: P42 77 UNPACK: MHTT DMK | awk '{sub("PACK: ","VAR1=\"");sub(" UNPACK: ","\";VAR2=\"");$0=$0"\""}1')
# echo $VAR1
P42 77
# echo $VAR2
MHTT DMK

# 3  
Old 04-29-2010
GNU sed:
Code:
$> sed 's/^PACK:[ \t]*\(.*\)UNPACK.*/\1/g' infile
P42 77
$> sed 's/.*UNPACK:[ \t]*\(.\{,20\}\).*/\1/g' infile
MHTT DMK

You have 104 posts already and still don't use code tags. Please edit your post accordingly as commented by radoulov. If have problems using code tags, let us know, ty.
# 4  
Old 04-29-2010
Please help me in finding code tags document so that i can start following it.
# 5  
Old 04-29-2010
Quote:
Originally Posted by anushree.a
Please help me in finding code tags document so that i can start following it.
Check Forum Rule (B): The UNIX and Linux Forums - Forum Rules
# 6  
Old 04-29-2010
Some misunderstanding.

I have
Code:
READY: BLPS3Q   PACK: DBL25464         UNPACK: UY3546P4

I want
Code:
DBL25464         in op.txt
UY354758         in op1.txt

here everything is variable in length except words READY:, PACK: and UNPACK:
We want to send anything appearing between word PACK: and UNPACK: to op.txt
Similarly next 20 characters of word UNPACK:
Last edited by zaxxon; 04-29-2010 at 11:58 AM.. Reason: you may guess... :)
# 7  
Old 04-29-2010
Code:
echo READY: BLPS3Q   PACK: DBL25464         UNPACK: UY3546P4 | awk -F:\  '{gsub("[PACK|UNPACK]",X);print $3 > "op.txt";print $NF > "op1.txt"}'
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