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Top Forums Shell Programming and Scripting Creating all possible bi-combinations of a list with grep/awk Post 302900552 by vbe on Wednesday 7th of May 2014 12:38:04 PM
Old 05-07-2014
Code:
while read REC1
do
   while read REC2
   do
      echo $REC2"               "$REC1
   done<0002.file
done<0002.file
#
                     
flower          flower
cat             flower
dog             flower
pizza           flower
car             flower
book            flower
flower          cat
cat             cat
dog             cat
pizza           cat
car             cat
book            cat
flower          dog
cat             dog
dog             dog
pizza           dog
car             dog
book            dog
flower          pizza
cat             pizza
dog             pizza
pizza           pizza
car             pizza
book            pizza
flower          car
cat             car
dog             car
pizza           car
car             car
book            car
flower          book
cat             book
dog             book
pizza           book
car             book
book            book

what do you grep to be used for???
 

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

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.11 3 Aug 1994 echo(1B)
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