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Top Forums Shell Programming and Scripting What is issue with this script? Post 302819555 by targetshell on Tuesday 11th of June 2013 03:54:22 AM
Old 06-11-2013
Quote:
Originally Posted by PikK45
Code:
#!/bin/ksh
i=1
while [ $i -le 5 ]
do
j=0
out=""
 while [ $j -lt $i ]
 do
  out=$out$i
  j=`expr $j + 1`
 done
echo "$out"
i=`expr $i + 1`
done


Thanks boss !!! This thing worked.

But please if possible could you explain the usage of OUT in the above script?

out=""
out=$out$i
echo "$out"

Rgds,
TS
 

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let(1)								   User Commands							    let(1)

NAME
let - shell built-in function to evaluate one or more arithmetic expressions SYNOPSIS
ksh let arg... ksh93 let [expr...] DESCRIPTION
ksh Each arg is a separate arithmetic expression to be evaluated. ksh93 let evaluates each expr in the current shell environment as an arithmetic expression using ANSI C syntax. Variables names are shell vari- ables and they are recursively evaluated as arithmetic expressions to get numerical values. let has been made obsolete by the ((...)) syn- tax of ksh93(1) which does not require quoting of the operators to pass them as command arguments. EXIT STATUS
ksh ksh returns the following exit values: 0 The value of the last expression is non-zero. 1 The value of the last expression is zero. ksh93 ksh93 returns the following exit values: 0 The last expr evaluates to a non-zero value. >0 The last expr evaluates to 0 or an error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
ksh(1), ksh93(1), set(1), typeset(1), attributes(5) SunOS 5.11 2 Nov 2007 let(1)
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