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Shell Programming and Scripting

running a shell script

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# 1  
Old 06-16-2009
running a shell script
sometimes while running a shell script we use ksh -c '....script'
what is the significance of ksh -c here ....
what if i run the script only.what is the difference
# 2  
Old 06-16-2009
-C Prevent existing files from being overwritten by
the shell's > redirection operator; the >|
redirection operator will override this
noclobber option for an individual file.

Refer "man ksh" for more info
# 3  
Old 06-16-2009
-c is the parameter to state the location of the shell script to be run.
If there are no other parameters on the line, the -c is assumed.
See the "Invoking ksh" section of "man ksh".
# 4  
Old 06-16-2009
Quote:
Originally Posted by methyl
-c is the parameter to state the location of the shell script to be run.
If there are no other parameters on the line, the -c is assumed.
See the "Invoking ksh" section of "man ksh".
I could not understand the answer.I am running couple of commands through one application.I am gettinng some error when directly using the commands but it gets executed when i am using ksh -c '..my commands...'
# 5  
Old 06-17-2009
And the commands are .... the errors are ... ?
# 6  
Old 06-17-2009
Quote:
Originally Posted by methyl
-c is the parameter to state the location of the shell script to be run.
Sorry but that statement is incorrect.

From ksh93 man page
Code:
     -c       If  the  -c option is present, then commands are
               read from the first arg.   Any  remaining  argu-
               ments  become  positional parameters starting at
               0.

From pdksh man page
Code:
    -c command-string
        The shell executes the command or commands contained in command-
        string.

From ksh88 man page
Code:
-c string
    If the -c flag is present then commands are read from string.

# 7  
Old 06-17-2009
We need to see the script which is failing and to know the default shell.
In the context of running a single script with parameters "ksh -c" and the ksh command prompt are interchangeable. This case must be more complicated.
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