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Full Discussion: error checking in bash
Top Forums Shell Programming and Scripting error checking in bash Post 302075733 by x96riley3 on Tuesday 6th of June 2006 01:30:41 PM
Old 06-06-2006
Put this at the top of every script you write.

LOG=/tmp/mylog

##################
function if_error
##################
{
if [[ $? -ne 0 ]]; then # check return code passed to function
print "$1 TIME:$TIME" | tee -a $LOG # if rc > 0 then print error msg and quit
exit $?
fi
}

Example below:

hostname
if_error "hostname command failed to return hostname"

chmod 775 /etc/hosts
if_error "chmoding /etc/hosts to 775 has failed"


-X
 

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LEARN ABOUT PLAN9

ftpaddhost

ftpaddhost(1M)						  System Administration Commands					    ftpaddhost(1M)

NAME

       ftpaddhost - set up a virtual FTP host

SYNOPSIS

       ftpaddhost -c | -l [-b] [-x xferlog] hostname root_dir

DESCRIPTION

       The  ftpaddhost	script is executed by the super user to set up virtual FTP hosts. The ftpaddhost command configures the virtual host host-
       name under directory root_dir. The value of hostname can be an IP address or the name of a host.

OPTIONS

       The ftpaddhost script supports the following options:

       -b		       Create a banner for the virtual host. This option is useful to confirm that the virtual host is working.

       -c		       Configure complete virtual hosting. This option allows each virtual host to have its own version of the	ftpaccess,
			       ftpconversions, ftpgroups, ftphosts, and ftpusers files. The master version of each of these configuration files is
			       copied from  the  /etc/ftpd  directory  and  placed  in	 the  /etc/ftpd/virtual-ftpd/hostname  directory.  If  the
			       /etc/ftpusers file exists it is appended to the virtual ftpusers file. If a virtual host lacks its own version of a
			       configuration file, the master version is used.

       -l		       Configure limited virtual hosting. This	option allows a small number of parameters to  be  configured  differently
			       for a  virtual host. See the virtual keyword on the ftpaccess(4) manual page.

       -x xferlog	       Create a logfile entry such that the transfer logs for the virtual host are written to the specified file. An abso-
			       lute path must be specified for the xferlog file.

OPERANDS

       The following operands are supported:

       hostname        The host name or IP address of the virtual server.

       root_dir        The absolute pathname of the directory under which the virtual server is set up.

EXIT STATUS

       The following exit values are returned:

       0	Successful completion

       1	Improper usage of the command

       2	Command failed

FILES

       /etc/ftpd/virtual-ftpd/hostname	       The configuration files directory for the virtual host hostname.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWftpu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       ftpconfig(1M), in.ftpd(1M), ftpaccess(4), ftpconversions(4), ftpgroups(4), ftphosts(4), ftpusers(4), xferlog(4), attributes(5)

SunOS 5.10							    1 May 2003							    ftpaddhost(1M)
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