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Full Discussion: creating dynamic shell script
Top Forums Shell Programming and Scripting creating dynamic shell script Post 302167043 by sundarkumars on Wednesday 13th of February 2008 10:08:13 AM
Old 02-13-2008
creating dynamic shell script
Hello

I am trying to create a dynamic ksh script and I have an issue.

I have a script a.ksh and it has got the following lines (for example)
Code:
#!/bin/ksh
# trace mode +x : without trace -x : with trace
set +xv
echo hi, i am going to create a dynamic script now
cat >> dynamic.ks <<EOF
#!/bin/ksh
# trace mode +x : without trace -x : with trace
set +xv
###################################################################################################
echo $PATH
ses_exi=$(somefileexcution|grep "somevalue"|wc -1)
if [ "$ses_exi" -eq "1" ]
then 
   echo i can open a new session
else
   echo i cannot open a new session
fi
###################################################################################################
EOF

The dynamic file is getting created but look at the file content, its not the same instead the output of each statement execution. I want the same text that I mention in the code. Any help would be appreciated.

Code:
#!/bin/ksh
# trace mode +x : without trace -x : with trace
set +xv
###################################################################################################
echo /usr/local/bin/ssh:/home/bdrhom01/outils/curl-7.15.1/bin:/etc:/usr/lib:/usr/openwin/bin:/bin:/usr/bin:/usr/sbin:.:/opt/SUNWspro/bin:/usr/ccs/bin:/usr/sfw/bin:/usr/ucb:/usr/local/bin:/bdrhomtt01/oracle/product/10.2.0.3/bin:/home/bdrhom01/ccm_tools:/tools/ccm63/bin:/home/bdrhom01/bin:/home/bdrhom01/outils:/home/bdrhom01
ses_exi=       0
if [ "" -eq "1" ]
then
   echo i can open a new session
else
   echo i cannot open a new session
fi
###################################################################################################

Many thanks in advance
Sundar
 

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LEARN ABOUT LINUX

shcomp

SHCOMP(1)						    User Environment Utilities							 SHCOMP(1)

NAME

       shcomp - compile a ksh93 shell script

SYNOPSIS

       shcomp [ options ] [infile] [outfile]]

ORIGIN OF THIS MAN PAGE

       This man page was written by Christophe Martin <Schplurtz@free.fr> for the Debian GNU/Linux system. It is based on "shcomp --man" output.

DESCRIPTION

       Unless  -D  is  specified,  shcomp takes a shell script, infile, and creates a binary format file, outfile, that ksh93 can read and execute
       with the same effect as the original script.

       Since aliases are processed as the script is read, alias definitions whose value requires variable expansion will not work correctly.

       If -D is specified, all double quoted strings that are preceded by $ are output. These are the messages	that  need  to	be  translated	to
       locale specific versions for internationalization.

       If  outfile is omitted, then the results will be written to standard output.  If infile is also omitted, the shell script will be read from
       standard input.

OPTIONS

       -D, --dictionary
	      Generate a list of strings that need to be placed in a message catalog for internationalization.

       -n, --noexec
	      Displays warning messages for obsolete or non-conforming constructs.

       -v, --verbose
	      Displays input from infile onto standard error as it reads it.

       --man  Displays this man page on standard error and exits.

       --help Shows a short help message and exits.

EXIT STATUS

       0      Successful completion.

       >0     An error occurred.

DEBIAN WARNING

       On a Debian GNU/Linux system, more than one package may provide ksh. the output of shcomp can only be used by ksh93.  Any other ksh will be
       unable to run the compiled script.

EXAMPLE

       ( echo '#! /bin/ksh93' ; shcomp myscript ) > myscript.bin &&
       chmod 755 myscript.bin
       ./myscript.bin

SEE ALSO

       ksh(1)

IMPLEMENTATION

       version	       shcomp (AT&T Labs Research) 2003-03-02
       author	       David Korn <dgk@research.att.com>
       copyright       Copyright (c) 1982-2005 AT&T Corp.
       license	       http://www.opensource.org/licenses/cpl1.0.txt

KSH93								  Fri Jun 3 2005							 SHCOMP(1)
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