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mrbubl3s
Joined: 13 Mar 2010
Posts: 55
Location: %EARTHDIR%
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 Posted: Sun 04 Apr 2010, 01:39 Post subject:
 [SOLVED] Having trouble showing more output.
Subject description: In shell scripting. |
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Hello fellow forum members, is there a way in shell script to show a certain line of output with printf?
Example:
# fortune
Once the game is over,
the king and the pawn
go in the same box.
--whoever
How would I show 'go in the same box', instead of just the first line?
and
How do I show all the output?
I know how you get the last line (or first), and/or the last lines up (or the first lines down), using:
<command> | head -2
or
<command> | tail -2
Thanks! 
Last edited by mrbubl3s on Sun 04 Apr 2010, 23:01; edited 1 time in total
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sunburnt
Joined: 08 Jun 2005
Posts: 4001
Location: Arizona, U.S.A.
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| Posted: Sun 04 Apr 2010, 16:36 Post subject:
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Hi mrbubl3s; Several ways as usual...
>>> Method #1:
| Code: | S1=Once the game is over,
S2=the king and the pawn
S3=go in the same box. |
Echo the variables you want to show:
| Code: | | echo -e $S1\\n$S2\\n$S3 |
If you have lots of lines to manage put them in an array.
>>> Method #2:
| Code: | S='Once the game is over,
the king and the pawn
go in the same box.' |
Echo the variable through sed:
| Code: | | echo "$S" |sed '3!d' |
The variable "$S" must be double quoted to preserve the carriage returns ( new lines ).
The number 3 in the sed statement is the line you want shown.
To show more lines use the first and last line you want shown.
All 3 of them:
| Code: | | echo "$S" |sed '1,3!d' |
Just the first 2:
| Code: | | echo "$S" |sed '1,2!d' |
The lines shown must be continuous, you can`t show them at random.
>>> However... Method #1 can show any combination of lines you want it to.
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mrbubl3s
Joined: 13 Mar 2010
Posts: 55
Location: %EARTHDIR%
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| Posted: Sun 04 Apr 2010, 22:57 Post subject:
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Yes! Thank you! 
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