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Full Discussion: Incrementing in while loop
Top Forums Shell Programming and Scripting Incrementing in while loop Post 302324044 by cfajohnson on Tuesday 9th of June 2009 06:24:01 PM
Old 06-09-2009
Quote:
Originally Posted by ultimatix
echo "Enter Starting id:"
echo ""
read rvst_strt_idxx
echo ""
echo "Enter Closing id:"
echo ""
read rvst_clsn_idxx

FIELD1=$rvst_strt_idxx
FIELD2="USER"
FIELD3="TEST"
FIELD4="12345"
FIELD5="00000"

echo ""
echo "INSERT INTO TABLE( FIELD1, FIELD2, FIELD3, FIELD4, FIELD5 ) "
echo " VALUES ( '$FIELD1','$FIELD2','$FIELD3','$FIELD4',$FIELD5') "


Suppose Starting id is 10 and closing Id is 20
I want to write a script which will increment the value of field1 in each loop starting with 10 and increment until 20 is reached

ie I need 20 lines of Insert into scripts which will have field1 values from 10 to 20

I think i need to write a while loop which increments the value of field 1 by 1 and until it reaches the upper limit is (20 here).

Please help

This will run in any standard Unix shell:

Code:
printf "Enter Starting id: "
read start
printf "Enter Closing id: "
read close

## You should first check that the user has entered valid numbers

FIELD2="USER" 
FIELD3="TEST"
FIELD4="12345"
FIELD5="00000"
n=$start
while [ $n -le $close ]
do
  FIELD1=$n
  echo "INSERT INTO TABLE( FIELD1, FIELD2, FIELD3, FIELD4, FIELD5 ) "
  printf " VALUES ( '%s','%s','%s','%s','%s') \
       "$FIELD1" "$FIELD2" "$FIELD3" "$FIELD4" "$FIELD5"
  n=$(( $n + 1 ))
done > output.sql

 

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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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