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Full Discussion: write a script & sum contents!PLEASE HELP
Top Forums UNIX for Dummies Questions & Answers write a script & sum contents!PLEASE HELP Post 302118761 by questionmaker25 on Thursday 24th of May 2007 06:12:07 AM
Old 05-24-2007
Quote:
Originally Posted by johnf
Although this sounds like a homework question here is one answer. I am sure you will get more compact answers from those more accustom to AWK.

create enttab to contain

1%blabla%30
2%blabla2%50
1%blabla3%40
2%blabla4%10


for name in `cat enttab`
do
echo $name
frst=`echo $name | cut -f 1 -d %`
scnd=`echo $name | cut -f 3 -d %`
echo $frst $scnd
done
I am not familiar to awk anyway!! Thanks a lot but I know how to extract the columns. I don't know how to sum the contents of the thrird one!
Last edited by questionmaker25; 05-24-2007 at 07:52 AM..
 

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LEARN ABOUT SUNOS

sum

sum(1B) 					     SunOS/BSD Compatibility Package Commands						   sum(1B)

NAME

       sum - calculate a checksum for a file

SYNOPSIS

       /usr/ucb/sum file...

DESCRIPTION

       sum  calculates	and  displays a 16-bit checksum for the named file and displays the size of the file in kilobytes. It is typically used to
       look for bad spots, or to validate a file communicated over some transmission line. The checksum is calculated by an  algorithm	which  may
       yield different results on machines with 16-bit ints and machines with 32-bit ints, so it cannot always be used to validate that a file has
       been transferred between machines with different-sized ints.

USAGE

       See largefile(5) for the description of the behavior of sum when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       sum(1), wc(1), attributes(5), largefile(5)

DIAGNOSTICS

       Read error is indistinguishable from EOF on most devices; check the block count.

NOTES

       sum and /usr/bin/sum (see sum(1)) return different checksums.

       This utility is obsolete.

SunOS 5.10							    8 Nov 1995								   sum(1B)
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