Linux Cubed Series 7: Sunsite/Linux Cubed Series 7 - Sunsite Vol 1.iso/system/news/inn1.000/inn1.4sec-linux-src.tar/inn/installit.sh

Linux/UNIX/POSIX Shell Script | 1993-01-29 | 4KB | 246 lines

#! /bin/sh
##  $Revision: 1.8 $
##  A script to install files and directories.

PROGNAME=`basename $0`

##  Paths to programs.  CHOWN and WHOAMI are checked below.
CHOWN=chown
CHGRP=chgrp
CHMOD=chmod
CP=cp
LN=ln
MKDIR=mkdir
MV=mv
RM=rm
STRIP=strip
WHOAMI=whoami

##  Some systems don't support -x, so we have to use -f.
if [ ${CHOWN} = chown ] ; then
    if [ -f /etc/chown ] ; then
    CHOWN=/etc/chown
    else
    if [ -f /usr/etc/chown ] ; then
        CHOWN=/usr/etc/chown
    fi
    fi
fi

if [ ${WHOAMI} = whoami ] ; then
    if [ -f /usr/ucb/whoami ] ; then
    WHOAMI=/usr/ucb/whoami
    fi
fi

##  Defaults.
CHOWNIT=false
CHGROUPIT=false
CHMODIT=false
STRIPIT=false
BACKIT=false
TOUCHIT=true
ROOT=unknown

##  Process JCL.
MORETODO=true
while ${MORETODO} ; do
    case X"$1" in
    X-b)
    BACKIT=true
    BACKUP="$2"
    shift
    ;;
    X-b*)
    BACKIT=true
    BACKUP=`expr "$1" : '-b\(.*\)'`
    ;;
    X-g)
    GROUP="$2"
    CHGROUPIT=true
    shift
    ;;
    X-g*)
    GROUP=`expr "$1" : '-g\(.*\)'`
    CHGROUPIT=true
    ;;
    X-G)
    case ${ROOT} in
    unknown)
        case `${WHOAMI}` in
        root)
        ROOT=true
        ;;
        *)
        ROOT=false
        ;;
        esac
        ;;
    esac
    GROUP="$2"
    shift
    ${ROOT} && CHGROUPIT=true
    ;;
    X-G*)
    case ${ROOT} in
    unknown)
        case `${WHOAMI}` in
        root)
        ROOT=true
        ;;
        *)
        ROOT=false
        ;;
        esac
        ;;
    esac
    if ${ROOT} ; then
        GROUP=`expr "$1" : '-g\(.*\)'`
        CHGROUPIT=true
    fi
    ;;
    X-m)
    MODE="$2"
    CHMODIT=true
    shift
    ;;
    X-m*)
    MODE=`expr "$1" : '-m\(.*\)'`
    CHMODIT=true
    ;;
    X-n)
    TOUCHIT=false
    ;;
    X-o)
    OWNER="$2"
    CHOWNIT=true
    shift
    ;;
    X-o*)
    OWNER=`expr "$1" : '-o\(.*\)'`
    CHOWNIT=true
    ;;
    X-O)
    case ${ROOT} in
    unknown)
        case `${WHOAMI}` in
        root)
        ROOT=true
        ;;
        *)
        ROOT=false
        ;;
        esac
        ;;
    esac
    OWNER="$2"
    shift
    ${ROOT} && CHOWNIT=true
    ;;
    X-O*)
    case ${ROOT} in
    unknown)
        case `${WHOAMI}` in
        root)
        ROOT=true
        ;;
        *)
        ROOT=false
        ;;
        esac
        ;;
    esac
    if ${ROOT} ; then
        OWNER=`expr "$1" : '-o\(.*\)'`
        CHOWNIT=true
    fi
    ;;
    X-s)
    STRIPIT=true
    ;;
    X--)
    shift
    MORETODO=false
    ;;
    X-*)
    echo "${PROGNAME}:  Unknown flag $1" 1>&2
    exit 1
    ;;
    *)
    MORETODO=false
    ;;
    esac
    ${MORETODO} && shift
done

##  Process arguments.
if [ $# -ne 2 ] ; then
    echo "Usage:  ${PROGNAME} [flags] source destination"
    exit 1
fi

##  Making a directory?
if [ X"$1" = X. ] ; then
    DEST="$2"
    if [ ! -d "${DEST}" ] ; then
    ${MKDIR} "${DEST}" || exit 1
    fi
    if ${CHOWNIT} ; then
    ${CHOWN} "${OWNER}" "${DEST}" || exit 1
    fi
    if ${CHGROUPIT} ; then
    ${CHGRP} "${GROUP}" "${DEST}" || exit 1
    fi
    if ${CHMODIT} ; then
    umask 0
    ${CHMOD} "${MODE}"  "${DEST}" || exit 1
    fi
    exit 0
fi

##  Get the destination and a temp file in the destination diretory.
if [ -d "$2" ] ; then
    DEST="$2/$1"
    TEMP="$2/$$.tmp"
else
    DEST="$2"
    TEMP="`expr "$2" : '\(.*\)/.*'`/$$.tmp"
fi

##  If not given the same name, we must try to copy.
if [ X"$1" != X"$2" ] ; then
    if cmp -s "$1" "${DEST}" ; then
    ##  Files are same; touch or not.
    ${TOUCHIT} && touch "${DEST}"
    else
    ##  If destination exists and we wish to backup, link to backup.
    if [ -f "${DEST}" ] ; then
        if ${BACKIT} ; then
        ${RM} -f "${DEST}${BACKUP}"
        ${LN} "${DEST}" "${DEST}${BACKUP}"
        fi
    fi
    ##  Copy source to the right dir, then move to right spot.
    ##  Done in two parts so we can hope for atomicity.
    ${RM} -f "${TEMP}" || exit 1
    ${CP} "$1" "${TEMP}" || exit 1
    ${MV} -f "${TEMP}" "${DEST}" || exit 1
    fi
fi

##  Strip and set the modes.
if ${STRIPIT} ; then
    ${STRIP} "${DEST}" || exit 1
fi
if ${CHOWNIT} ; then
    ${CHOWN} "${OWNER}" "${DEST}" || exit 1
fi
if ${CHGROUPIT} ; then
    ${CHGRP} "${GROUP}" "${DEST}" || exit 1
fi
if ${CHMODIT} ; then
    umask 0
    ${CHMOD} "${MODE}"  "${DEST}" || exit 1
fi
exit 0