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Full Discussion: Problems with "IF" statement
Top Forums UNIX for Dummies Questions & Answers Problems with "IF" statement Post 302203833 by aveerabadran on Tuesday 10th of June 2008 02:32:46 AM
Old 06-10-2008
Problems with "IF" statement

Hi,

I am facing a strange problem when i use "if" statement in my shell script.

When i run this script , i get the following error -
***********************
$ sh test.ksh
: command not found
CX is 3 characters in length
CX = CR
: command not found
test.ksh: line 13: syntax error near unexpected token `fi'
test.ksh: line 13: `fi'

***********************


The following is the script i use -

***********************
#!/bin/ksh
CX="CR"

echo CX is ${#CX} characters in length
echo CX = $CX

if [[ $CX != "CP" ]]; then
echo "not equal"
fi

if [ $CX != "CP" ]; then
echo "not equal"
fi
***********************


the IF loop is not working fine here. [i hope the syntax is correct for it]
interestingly , string CX is 2 chars in length , but the output shows that it is 3 chars in length. Not sure why it happens.

Following is the information abt the Unix version i am using :

$ uname -a
Linux inafplxquas11 2.6.9-55.ELsmp #1 SMP Fri Apr 20 17:03:35 EDT 2007 i686 athlon i386 GNU/Linux

Can anyone help in resolving this

Thanks,
Arun
 

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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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