a simple loop in csh Post: 302197963

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Top Forums UNIX for Dummies Questions & Answers a simple loop in csh Post 302197963 by elthox on Thursday 22nd of May 2008 03:03:43 AM

05-22-2008

Registered User

Quote:

Originally Posted by dsstamps

Hello,

I have a file with over 48000 lines and I need to select certain parts of the file. I know which awk commands work for what I need, I just need some help putting together a loop that will repeat the command. These are the commands that work:

awk 'NR < 6' plot.out > plot.test (I get the first 5 lines of plot.out)

awk 'NR==15,NR==17' plot.out >> plot.test (now I need these lines)
awk 'NR==30,NR==32' plot.out >> plot.test (etc.)
awk 'NR==45,NR==47' plot.out >> plot.test
awk 'NR==60,NR==62' plot.out >> plot.test
awk 'NR==75,NR==77' plot.out >> plot.test
awk 'NR==90,NR==92' plot.out >> plot.test
awk 'NR==105,NR==107' plot.out >> plot.test
awk 'NR==120,NR==122' plot.out >> plot.test
awk 'NR==135,NR==137' plot.out >> plot.test

Please help. All the loops I make don't work Smilie

I know this is simple for somebody out there.....

I see that NR is incremented by 15

cat plot.out|awk -v x=15 'NR==x,NR==x+2 {x=x+15};END{print $0}'

elthox

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LEARN ABOUT BSD

circle

PLOT(3F)																  PLOT(3F)

NAME

       plot: openpl et al. - f77 library interface to plot(3X) libraries.

SYNOPSIS

       subroutine openpl()

       subroutine erase()

       subroutine label(str)
       character str*(*)

       subroutine line(ix1, iy1, ix2, iy2)

       subroutine box(ix1, iy1, ix2, iy2)
       Draw a rectangle and leave the cursor at ( ix2,iy2).

       subroutine circle(ix, iy, ir)

       subroutine arc(ix, iy, ix0, iy0, ix1, iy1)

       subroutine move(ix, iy)

       subroutine cont(ix, iy)

       subroutine point(ix, iy)

       subroutine linemd(str)
       character str*(*)

       subroutine space(ix0, iy0, ix1, iy1)

       subroutine clospl()

DESCRIPTION

       These are interface subroutines, in the library -lf77plot, allowing f77 users to call the plot(3X) graphics routines which generate graphic
       output in a relatively device-independent manner.  The f77 subroutine names are the same as the C function names except	that  linemod  and
       closepl have been shortened to linemd and clospl .  See plot(5) and plot(3X) for a description of their effect.

       Only the first 255 character in string arguments to label and linemd are used.

       This  library  must be specified in the f77(1) command before the device specific graphics library; for example, to compile and load a FOR-
       TRAN program in prog.f to run on a Tektronix 4014 terminal:

	      f77 prog.f -lf77plot -l4014

       See plot(3X) for a complete list of device specific plotting libraries.

SEE ALSO

       plot(5), plot(1G), plot(3X), graph(1G)

4.3 Berkeley Distribution					  April 30, 1986							  PLOT(3F)