inout

操作系统SunOS 4.1.3版本的源码

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log_echo(){
    echo $*
}
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log_cat(){
    $CAT $*
}
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log_more(){
    if $INTERACTIVE; then
	$MORE $*
    else
	$CAT $*
    fi
}
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log_tab(){
    echo -n "	"
}
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#og_echo "12345678901234567890123456789012345678901234567890123456789012345678901234567890"
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print_header(){
log_echo ""
log_echo "$CMD will perform an upgrade by extracting $TO_RELEASE files from the"
log_echo "media and overwriting the $FROM_RELEASE files on $TYPE $HOST."
[ $TYPE = dataless ] && return
log_echo "$CMD will only upgrade software categories which are currently installed."
log_echo
log_echo "No OpenWindows versions later than OpenWindows Version 3 will be overwritten."
log_echo
log_echo "The list of installed software categories to upgrade will be generated from the"
log_echo "following file(s) on your system : "
log_echo
log_echo "	/etc/install/media_file.sun4.sun{4, 4c, 4m}.sunos.{4.1.1, 4.1.2}"
log_echo
log_echo "Please check that the file shows \"mf_loaded=no\" for software categories you"
log_echo "do NOT wish to upgrade and \"mf_loaded=yes\" for software categories you wish to"
log_echo "upgrade. If you have installed a software category \"manually\" -- without using "
log_echo "SunInstall -- it will not be shown as loaded; change the \"no\" to \"yes\" for"
log_echo "such software categories, being sure the software category is installed in the"
log_echo "normal SunInstall location."
log_echo
log_echo "Please check the _readme file in /usr/etc/install/tar/sunupgrade for more"
log_echo "information about the upgrade process."
}
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stdin_log(){
# the only place we read from stdin
    read $1
}
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get_yesno(){
# return "yes" or "no" into shell variable named $1.
#  $2 is the user prompt.
    yesno=""
    while [ ! "$yesno" ]
    do
        echo -n   $2 "	[yes|no] ? "
        stdin_log yesno
        case "$yesno" in
        [yY]*)  yesno=yes ;;
        [nN]*)  yesno=no ;;
        *)      echo 'Please enter "yes" or "no".'
		yesno="" ;;
        esac
    done
    eval $1="$yesno"
}
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show_list(){
log_echo "-------------------------------------------------------------------------------"
    log_echo "$1 on $HOST :"
    $NAWK -f formatter $2
}
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cat_it(){
    if [ -s $1 ]; then	log_more $1
    fi
}
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