JezK
Edit File: bzcmp
#!/bin/sh # sh is buggy on RS/6000 AIX 3.2. Replace above line with #!/bin/ksh # Bzcmp/diff wrapped for bzip2, # adapted from zdiff by Philippe Troin <phil@fifi.org> for Debian GNU/Linux. # Bzcmp and bzdiff are used to invoke the cmp or the diff pro- # gram on compressed files. All options specified are passed # directly to cmp or diff. If only 1 file is specified, then # the files compared are file1 and an uncompressed file1.gz. # If two files are specified, then they are uncompressed (if # necessary) and fed to cmp or diff. The exit status from cmp # or diff is preserved. PATH="/usr/bin:/bin:$PATH"; export PATH prog=`echo $0 | sed 's|.*/||'` case "$prog" in *cmp) comp=${CMP-cmp} ;; *) comp=${DIFF-diff} ;; esac OPTIONS= FILES= for ARG do case "$ARG" in -*) if test -z "$OPTIONS"; then OPTIONS="$ARG" else OPTIONS="$OPTIONS $ARG" fi ;; *) if test -f "$ARG"; then FILES="$FILES $ARG" else echo "${prog}: $ARG not found or not a regular file" exit 1 fi ;; esac done if test -z "$FILES"; then echo "Usage: $prog [${comp}_options] file [file]" exit 1 fi set $FILES if test $# -eq 1; then FILE=`echo "$1" | sed 's/.bz2$//'` bzip2 -cd "$FILE.bz2" | $comp $OPTIONS - "$FILE" STAT="$?" elif test $# -eq 2; then case "$1" in *.bz2) case "$2" in *.bz2) F=`echo "$2" | sed 's|.*/||;s|.bz2$||'` tmp=`mktemp "${TMPDIR:-/tmp}"/bzdiff.XXXXXXXXXX` || { echo 'cannot create a temporary file' >&2 exit 1 } bzip2 -cdfq "$2" > "$tmp" bzip2 -cdfq "$1" | $comp $OPTIONS - "$tmp" STAT="$?" /bin/rm -f "$tmp";; *) bzip2 -cdfq "$1" | $comp $OPTIONS - "$2" STAT="$?";; esac;; *) case "$2" in *.bz2) bzip2 -cdfq "$2" | $comp $OPTIONS "$1" - STAT="$?";; *) $comp $OPTIONS "$1" "$2" STAT="$?";; esac;; esac else echo "Usage: $prog [${comp}_options] file [file]" exit 1 fi exit "$STAT"