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Top Forums Shell Programming and Scripting Missing Assigned Variable within logic operator Post 302403543 by malcomex999 on Saturday 13th of March 2010 01:38:02 AM
Old 03-13-2010
Quote:
Originally Posted by sexyTrojan
Hey Guys,

thanks for the fast replies, even though i used double quotes it still doesn't wor and my input doesn't have any white spaces

here is the code suggested
Code:
#!/bin/sh

while :
do
echo "what's ur name? (if none just press [ENTER])"
read name
changeName= `echo "$name" | sed "s/on/ey/"`
echo $changeName  #this variable still can be read
if [ -z "$name" ]; then
 echo "you don't have a name goodbye"
 exit 0
else
 echo "your name will change from: $name to "$changeName" ? [y/n]"
 read ans
fi
done

This is the ouput I got:

what's ur name? (if none just press [ENTER])
jon
./testVar: line 7: jey: command not found

your name will change from: jon to ? [y/n]



I'm confused never had this problem before
Code:
#!/bin/sh

while :
do
echo "what's ur name? (if none just press [ENTER])"
read name
changeName=`echo "$name" | sed "s/on/ey/"`
echo $changeName  #this variable still can be read
if [ -z "$name" ]; then
 echo "you don't have a name goodbye"
 exit 0
else
 echo "your name will change from: $name to "$changeName" ? [y/n]"
 read ans
fi
done

I just removed the space after the assignment
operator as in the below line and it is working for me...

Code:
changeName=`echo "$name" | sed "s/on/ey/"`

And it will keep on looping till you don't put a name...
 

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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 5.10 3 Aug 1994 echo(1B)
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