bourne shell error handling for copy files

[rozzay]

Hi I have a bourne shell script that copies a file to another server or to a shared directory is there a way to do some kind of error handling if the file is unsuccessfully when copying over? Any help or links would be great.

#!/bin/sh
EDIOLD_DIR=/usr/local/cyclone/data/14001695568GT/ediold GIS_DIR=/usr/local/GIS4/AAFES/CYCLONE_D
LOG_DIR=/usr/local/cyclone/logs INBOUNDFILE=$1
FILENAME=`basename $INBOUNDFILE`
DATETIME=`date +%m/%d/%y" "%H:%M:%S` ID=14001695568GT
SHORTFN=`echo $FILENAME |sed -e 's/\(.*\)'$ID'\(.*\)/\1\2/'`
echo $SHORTFN

#cp $INBOUNDFILE $EDIOLD_DIR/tmp/$SHORTFN
cp $INBOUNDFILE $GIS_DIR/$SHORTFN
chmod 777 $GIS_DIR/$SHORTFN

# Move Inbound EDI file to EDIOLD directory
mv $INBOUNDFILE $EDIOLD_DIR/$FILENAME

 

[p5wizard]

After every command that you want to 'error-handle', put a test clause:

example:

cp $INBOUNDFILE $GIS_DIR/$SHORTFN
errcode=$?
if test $errcode -ne 0
then
echo "An error occurred while running command "cp $INBOUNDFILE $GIS_DIR/$SHORTFN"
exit $errcode
fi

Of course it's for you to decide what action to take, here I chose to exit...

Also you can trap error output in a logfile:

rm -f /tmp/GIS.err
cp $INBOUNDFILE $GIS_DIR/$SHORTFN 2>/tmp/GIS.err
errcode=$?
if test $errcode -ne 0
then
echo "An error occurred while running command "cp $INBOUNDFILE $GIS_DIR/$SHORTFN"
cat /tmp/GIS.err
exit $errcode
fi

You take it from here?

HTH,

p5wizard

 

[Mike042]

We use the sum command to help validate a successful file copy for large (or important) files. This produces a checksum value, so in the script generate a checksum before the file is copied, then another checksum on the resultant file and compare the checksums. (if the same then OK, if not then repeat the process or send a mail message or error out)

Another trick we use to 'protect' the destination file from being accessed too early (ie before the copy has finished) is to create a 'lock-file', do the copy, then delete the 'lock-file'.

I hope that helps.

Mike