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Full Discussion: Find the minimum value
Top Forums Shell Programming and Scripting Find the minimum value Post 302439676 by ygemici on Friday 23rd of July 2010 09:23:37 AM
Old 07-23-2010
MySQL

Hi i write a script Smilie

Code:
# cat infile
94.971
101.468
73.120
73.090
73.090
73.090
73.070
73.650
100.601
102.329

Code:
 
# ./smallest infile
At line 7 -> Small Value is :  73.070

Code:
#!/bin/bash
# Smalletst Finder ygemici
i=0
 while read -r lin ;
   do
     myarray[i]=${lin} ; ((i++))
   done < $1
  mynew=`echo $(echo "${myarray[0]} * 1000" | bc) | sed 's/\.0*//g'`
 
first=0
i=1
   for mycheck in ${myarray[@]}
     do
       mychk=`echo $(echo "${mycheck} * 1000" | bc) | sed 's/\.0*//g'`
     if [ $mynew -ne $mychk ] ; then
        if [ $mynew -gt $mychk ] ; then
           ((first++))
            if (( $first == 1 )) ; then
               smallval[i]=$mychk
            fi
          if (( $first > 1 )) ; then
             if [ ${smallval[i]} -gt $mychk ] ; then
                ((i++))
                smallval[i]=$mychk
                smallval[i-1]=""
             fi
          fi
        fi
     fi
     done
echo "At line" $(sed -n "/$(echo ${smallval[@]}|sed 's:\(...\)$:\.\1:')/=" $1)  "->" "Small Value is : " "$(echo ${smallval[@]} | sed 's/\(...\)$/\.\1/')"

Regards
ygemici
 

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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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