At 02:56 PM 9/26/02 , Tim Mooney wrote:
The problem is that there's no way to do backreferences that I'm aware of,
so in the example you show above, your *entire* owner notification will be
replaced with `jimuser...', rather than just the one part of the RE that
your selection matched.
You backreference by enclosing the part you want to re-use in escaped
parentheses, and then use an escaped number to match the n'th sub-expression.
Check out the sed statement near the bottom of the attached shell script
for an example.
----- cut -----
#!/bin/sh
# $Id: renumber.sh,v 1.4 2000/11/24 22:02:25 chad Exp $
# Renumber images consecutively.
# Used to fixup uploads from the digital camera.
# Takes two arguments, first a prefix describing the
# files to be renumbered, second a prefix to be applied
# to the renumbered files.
# IE: "renumber MVC Christmas"
# It will accept a verbose switch.
LS=/bin/ls
PRINTF=/usr/bin/printf
if [ $1 = "-v" ] ; then
VERBOSE=true
shift
fi
if [ $# -ne 2 ] ; then
echo "Usage: $0 [-v] <before> <after>"
exit 1
fi
PRE=$1
NAME=$2
FILES=`${LS} ${PRE}*.jpg ${PRE}*.JPG ${PRE}*.mpg ${PRE}*.MPG 2> /dev/null`
if [ -z "${FILES}" ] ; then
echo "No files found."
exit 2
fi
COUNT=0
for FILE in ${FILES} ; do
COUNT=`expr ${COUNT} + 1`
TYPE=`echo ${FILE} | sed -e 's/^..*\(\..*$\)/\1/'`
NEW=`${PRINTF} '%s-%03d%s' ${NAME} ${COUNT} ${TYPE}`
if [ ${VERBOSE} ] ; then
echo "${FILE} becomes ${NEW}"
fi
mv ${FILE} ${NEW}
done
----- uncut -----
-crl
--
Chad R. Larson (CRL22) chad AT eldocomp DOT com
Eldorado Computing, Inc. 602-604-3100
5353 North 16th Street, Suite 400
Phoenix, Arizona 85016-3228
--
Note: To sign off this list, send a "signoff" command via email
to listserv AT listmail.temple DOT edu or visit the list's Web site at
http://listmail.temple.edu/archives/networker.html where you can
also view and post messages to the list.
=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
|
