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Full Discussion: Handling tape errors in script
Top Forums Shell Programming and Scripting Handling tape errors in script Post 302777809 by Corona688 on Friday 8th of March 2013 11:53:51 AM
Old 03-08-2013
Quote:
Originally Posted by landog
Thanks!

What if the stderr message is this:
Code:
backup: 0511-089 Cannot open /dev/rmt0: The input or output media is write-protected.
Mount volume 1 on /dev/rmt0.
        Press Enter to continue

Would it just hang as no one could "Press Enter" ?
When your script is run from cron, it has nothing to read ENTER from -- no terminal. When the utility tries to read, it will get EOF or some sort of error, and probably quit. A badly-coded program might go into an infinite loop though.

A well-coded program could even tell that it has no terminal, and not bother trying.
This User Gave Thanks to Corona688 For This Post:
landog
 

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LEARN ABOUT X11R4

run

run(1F) 							   FMLI Commands							   run(1F)

NAME

       run - run an executable

SYNOPSIS

       run [ -s] [-e] [-n] [-t string] program

DESCRIPTION

       The run command runs program, using the PATH variable to find it. By default, when program has completed, the user is prompted (Press ENTER
       to continue:), before being returned to FMLI.  The argument program is a system executable followed by its options (if any).

OPTIONS

       The following options are supported:

       -e		       If -e is specified, the user will be prompted before returning to FMLI only if there is an error condition

       -n		       If -n is specified, the user will never be prompted before returning to FMLI (useful for programs like vi, in which
			       the user must do some specific action to exit in the first place).

       -s		       The  -s	option	means "silent", implying that the screen will not have to be repainted when program has completed.
			       Note that the -s option should only be used when program does not write to the terminal. In addition,  when  -s	is
			       used, program cannot be interrupted, even if it recognizes interrupts.

       -tstring 	       If -t is specified, string is the name this process will have in the pop-up menu generated by the frm-list command.
			       This feature requires the executable facesuspend (see face(1)) to suspend the process and return to the FMLI appli-
			       cation.

EXAMPLES

       Example 1: Sample output of run command

       Here is a menu that uses run:

       menu="Edit special System files"
       name="Password file"
       action=`run -e vi /etc/passwd`
       name="Group file"
       action=`run -e vi /etc/group`
       name="My .profile"
       action=`run -n vi $HOME/.profile`

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       face(1), attributes(5)

SunOS 5.10							    17 Nov 1999 							   run(1F)
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