Shell Programming and Scripting

I am trying to cut and delete using sed and redirect back into the file. This is not working write. When testing the script, it hangs. Any idea what I am doing wrong here.

################ Reads the input file to cut volumes for returns and CUT_ERVTAPE_FILE()
{
echo "working on cut $ERVTAPE_RET"; cat $ERVTAPE_RET
#cut -c1-8 $ERVTAPE_RET;
cut -c1-8; sed "/volume/d" $ERVTAPE_RET > $ERVTAPE_RTMP; cat $ERVTAPE_RTMP
#cp $ERVTAPE_RTMP $ERVTAPE_ALOC; cat $ERVTAPE_ALOC

Gzs,
The reason why your script is being hung is the "cut" command
is expecting input.
See if this works for you:

Code:

echo "working on cut $ERVTAPE_RET"
cat $ERVTAPE_RET
cut -c1-8 $ERVTAPE_RET | sed "/volume/d" > $ERVTAPE_RTMP
cat $ERVTAPE_RTMP

Code:

echo "working on cut $ERVTAPE_RET"
cut -c1-8 "$ERVTAPE_RET" | sed "/volume/d" $ERVTAPE_RET > "$ERVTAPE_RTMP" &&
cp "$ERVTAPE_RTMP" "$ERVTAPE_ALOC"