#!/bin/sh # script file to create multiple user account # # copyright 1987 W. Paul Zola # All rights reserved. Permission is given to copy this # software, as long as as long as this notice of copyright and # permission to copy is included. No warranty, expressed or implied, is # given to users of this software. # This shell script is designed to re-configure a standard # Unix account so that more than one inidividual can use it # comfortably and with their own environment. # variables CSHFILE= DIREC= LARGEC= LOGFILE= NAME= SMALLC= # file names CSHRC=.cshrc LOGIN=.login MASKOBJ=$HOME/.mask MASKSRC=$HOME/#mask.c MYCUT=$HOME/#cut MYCUTSRC=$HOME/#cut.c USERFILE=$HOME/users$$ clear ; cd echo -n " Hello $USER, and welcome to $0! This shell script is designed to modify your account so that more than one person can use a single account, with each individual working out of a different home directory. When done, there will be a modified login procedure for this account. Your $LOGIN file will prompt for a name. Based on this name, the person logging in will be placed into their own sub-directory. For all intents and purposes, this directory will be their home directory. In order to achive this, $0 will modify the contents of the file \"$LOGIN\" in your home directory, and will create the appropriate number of sub-directories in your account. This script has been fully tested, and the changes it makes are designed to be harmless. However, mistakes are possible, and damage to your account might result from them. Please read the instructions carefully and be sure to follow them. press return to continue --> " read NAME # dummy read to pause script clear echo -n " In order to work properly, this script will need two lists from you. You will be asked to enter these lists one entry at a time. The first list is a list of \"user names\". The \"user name\" is the name that a person will give upon logging in order to place themselves in their own home directory. Typically, this list consists of the first names of the people who will be using the account. These names canNOT contain spaces or tabs. All of these names MUST begin with a different letter. Two user names beginning with the same letter will cause the login process to behave incorrectly. If you your user list has names with duplicate first letters, abort the script with ^C and try again. press return to continue --> " read NAME # dummy read to pause script clear echo -n " The second list is a list of new home directories. The directory names must be distinct - it is not possible for two user names to be linked to the same home directory. These names cannot contain spaces or tabs. A name suitable as a login would be suitable for this list. You will be prompted for these directory names one at a time. The prompt will indicate the user name, and ask for a directory name. press return to continue --> " read NAME # dummy read to pause script clear echo -n " This script may not work correctly if you have a cshell mask in your $LOGIN file. If you have a mask, abort the script, remove the mask from the $LOGIN file, and try again. This script allows each user to have an inidvidual mask. After you are done, you can edit the $LOGIN file in each new home directory at the line above the one that says \"# insert cshell mask here ^^^^^^\" press return to continue --> " read NAME # dummy read to pause script clear echo -n " As the script runs, it will give you indications of what it is doing. press return to continue --> " read NAME # dummy read to pause script clear echo "Checking to make sure that I can do this without harming anything..... " # check to make sure that all the necessary files exist if [ ! -r $HOME/$LOGIN ] ; then echo "Uh, oh, I can't find the file $HOME/$LOGIN .. I quit"; exit 1 fi if [ ! -r $HOME/$CSHRC ] ; then echo "Uh, oh, I can't find the file $HOME/$CSHRC .. I quit"; exit 1 fi # check to make sure that we are using an un-modified # .login file as the template if [ -f $HOME/${LOGIN}.OLD ] ; then echo "It looks like you have run this script before. Move the file ${LOGIN}.OLD back to ${LOGIN} , and try again. In the meantime, .. I quit"; exit 1 fi # make sure not to over-write any existing files # while creating object files if [ -f $MASKOBJ ] ; then echo "You seem to have a file called $MASKOBJ . This just won't do. I need that file. You'll just have to quit, rename it, and start over. Bye! " exit 1 fi echo "Well, everything _looks_ O.K. from here. " # set up clean exit with ^C trap 'echo " Ouch, that hurt! ";rm -f $USERFILE $MYCUT;exit 1' 1 2 3 14 15 trap 'rm -f $USERFILE $MYCUT' 0 echo "Excuse me, but I'm going to have to create a utility program ...." cat > $MYCUTSRC << 'END_OF_TEXT' #include main(argc) int argc; { register int c; if (argc>1) { getchar(); while ((c=getchar()) != EOF) putchar(c); } else putchar(getchar()); } END_OF_TEXT echo "compiling $MYCUTSRC ..." if cc -o $MYCUT $MYCUTSRC ; then echo "Well, that went O.K. ..." else ERROR=$? echo "WHAT!? - the compile failed, exit status $ERROR" exit 1 fi rm $MYCUTSRC cat << END_OF_TEXT This shell script will need two lists from you: the first list will consist of user names for this account, and the second list will consist of the actual names of the alternate home directories. For now, just enter user names, one per line, with no spaces. When you have entered them all, type ^D. END_OF_TEXT # get the names of the users and the directories they # will be residing in echo -n "Enter the name of someone who will be using this account --> " while read NAME ; do NAME=`echo "$NAME" | tr A-Z a-z` # strip capitals firstc=`echo "$NAME" | $MYCUT | tr a-z A-Z` # capitalize first letter remain=`echo "$NAME" | $MYCUT -` # get rest of name NAME=$firstc$remain # create capitalized name set $* $NAME # make list of names by appending current name at the end of the # existing positional paramaters. echo -n "Enter a different name, or ^D to end the list --> " # prompt for next name done if [ $# -eq 0 ] ; then # no names entered in while loop echo " Wait just a second! How can you expect me to create new directories for non-entities? I need NAMES! This just won't do. I quit! " exit 1 fi echo " These are the names that you gave me for the alternate users " echo "$*" echo -n " It is very important that there be no duplicaton in this list. Specifically, no two user names can begin with the same letter. If any two user names begin with the same letter, or if this list does not look right for any reason, abort the script with a ^C followed by a return, and try again. Otherwise, just press return to continue. press return to continue --> " read NAME # dummy read to pause script for NAME in $* ; do echo -n "enter the name of the new home directory for user $NAME --> " read DIREC if [ "$DIREC" ] ; then # don't die on blank lines echo "$NAME $DIREC" >> $USERFILE else echo "There must be a directory name for every user name" echo "Aborting Script." exit 1 fi done echo " These are the names of the alternate users and their new home directories. " sed -e "s/ / /g" $USERFILE echo -n " If this list does not look right, abort this script with ^C followed by a return, and try again. Otherwise, just press return to continue. press return to continue --> " read NAME # make sub-directories and set them up echo " Creating directories....." { while read NAME DIREC ; do LOGFILE=$HOME/$DIREC/$LOGIN CSHFILE=$HOME/$DIREC/$CSHRC if [ -d $HOME/$DIREC ] ; then echo "woops! it looks like the directory $DIREC exists already I'm just going to ignore the directory $DIREC for the user $NAME Error condition 3." continue elif mkdir $HOME/$DIREC ; then cat >> $HOME/$DIREC/READ.ME << END_OF_TEXT Welcome to account $DIREC, $NAME. This account has been set up so that a number of people can use it, each with their own home directory. Each home directory has its own .login and .cshrc file, which can be customized individually. There is, however, only one .usrrc and one mailbox for the account. You are currently in your personal home directory, $HOME/$DIREC. If you want to customize your .login or .cshrc file, please customize the ones in this directory. The .login for this directory is set up so that a .alias file in this directory will be sourced automatically. END_OF_TEXT cat >$LOGFILE << END_OF_TEXT setenv HOME $HOME/$DIREC printenv COVER > /dev/null if (\$status && \$USER == "$USER") then setenv COVER 1 if (-x $MASKOBJ) \\ exec $MASKOBJ /bin/csh -csh # insert cshell mask here ^^^^^^^^^^ endif END_OF_TEXT sed -e "/setenv HOME/d" >> $LOGFILE < $HOME/$LOGIN echo "if ( -e .alias ) source .alias" >> $LOGFILE sed -e "/setenv HOME/d" < $HOME/$CSHRC > $CSHFILE echo "Through creating directory $DIREC ..." else echo "error: $0: could not create $DIREC " echo "Aborting Script." exit 1 fi done } <$USERFILE trap 'echo "Aborting script."; rm -f $USERFILE $MASKSRC \ $MYCUT $MASKOBJ; exit 1 ' 1 2 3 14 15 echo "creating source file $MASKSRC " cat >$MASKSRC <<'EOMASK' #include main(argc, argv) int argc; char **argv; { int i; if(argc == 1) exit(1); execv(argv[1], argv+2, 0); printf("GASP, ACK, ARGH!!\n"); } EOMASK echo "compiling $MASKSRC " if cc -o $MASKOBJ $MASKSRC ; then echo "done" else ERROR=$? echo "compile failed, exit status $ERROR" exit 1 fi rm $MASKSRC LOGFILE=$HOME/$LOGIN mv $LOGFILE ${LOGFILE}.OLD echo "modifying $LOGIN file in root directory" cat >$LOGFILE << 'END_OF_TEXT' # echo "" prompt: echo "" echo -n "Who is this? (? for help): " set resp = $< switch ("$resp") END_OF_TEXT { while read NAME DIREC ; do LARGEC=`echo $NAME | $MYCUT ` SMALLC=`echo $LARGEC | tr A-Z a-z` cat >> $LOGFILE << END_OF_TEXT case [$LARGEC$SMALLC]*: if (-r $HOME/$DIREC/.login) \\ source $HOME/$DIREC/.login echo "$DIREC login file not found" breaksw END_OF_TEXT done } < $USERFILE cat >> $LOGFILE << 'END_OF_TEXT' case "?": echo "" echo " Enter one of " END_OF_TEXT { while read NAME DIREC; do cat >> $LOGFILE << END_OF_TEXT echo " $NAME" END_OF_TEXT done }<$USERFILE cat >>$LOGFILE << 'END_OF_TEXT' echo " or " goto prompt breaksw default: echo "Just checking." breaksw endsw unset resp END_OF_TEXT cat >> $LOGFILE < ${LOGFILE}.OLD echo "Done." echo "Okay, now log out and log in again to see how it works"