Annotation of coherent/b/etc/Build_401/coh_intro, revision 1.1

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        !            17: 2.1PAGERexec more -dWould you like an introductory tour of COHERENTlc %s | %slc %s
        !            18: 
        !            19: When you boot your computer system (by turning on the power,
        !            20: by hitting the reset switch, or by typing <Ctrl><Alt><Del>),
        !            21: the bootstrap program by default runs the operating system on
        !            22: the partition marked as active.  To boot an operating system
        !            23: system on a different partition, type a partition number (0 to 7)
        !            24: when the boot tries to read the floppy disk.
        !            25: 
        !            26: When you boot COHERENT, it starts up in single-user mode.
        !            27: It automatically executes the commands in the file /etc/brc,
        !            28: which typically check COHERENT filesystems for consistency
        !            29: using /etc/fsck.  If the filesystems check without errors,
        !            30: the system goes into multi-user mode, automatically executing
        !            31: the commands in the file /etc/rc.  You can interrupt file system
        !            32: checking by typing <Ctrl-C>.
        !            33: 
        !            34: To shut down COHERENT from multi-user mode, log in as root and
        !            35: execute /etc/shutdown to return the system to single-user mode.
        !            36: Then type sync before rebooting or turning off the power.
        !            37: Your COHERENT filesystems may be damaged if you reboot or
        !            38: power down without following this procedure.
        !            39: 
        !            40: /Now we will take a quick tour of your COHERENT filesystem.
        !            41: The root directory / contains:
        !            42: 
        !            43: 
        !            44: COHERENT executes file /.profile when the superuser root logs in.
        !            45: File /coherent (linked to /autoboot) is the COHERENT system image.
        !            46: Empty directories /f0 and /f1 are used for mounting diskettes.
        !            47: Empty directory /mnt is used for mounting other devices.
        !            48: The filesystem checking program /etc/fsck uses empty directory
        !            49: /lost+found if it finds a problem with the root filesystem.
        !            50: COHERENT uses directory /tmp for temporary files; it removes files
        !            51: in /tmp automatically when the system goes multiuser (via /etc/rc).
        !            52: 
        !            53: Directory /bin contains executable programs (commands).
        !            54: Some of the most commonly used commands are:
        !            55:        bc      interactive calculator with arbitrary precision
        !            56:        cat     concatenate/print files
        !            57:        cc      C compiler
        !            58:        cmp     compare files
        !            59:        cp      copy files
        !            60:        cpdir   copy directory hierarchy
        !            61:        diff    summarize differences between files
        !            62:        doscp   transfer files to or from MS-DOS
        !            63:        egrep   extended pattern search
        !            64:        emacs   MicroEMACS screen editor
        !            65:        help    print concise command description
        !            66:        ls      list directory contents
        !            67:        mail    computer mail
        !            68:        more    view files one screenful at a time
        !            69:        ps      print process status
        !            70:        rm      remove files
        !            71:        rmdir   remove directories
        !            72:        sort    sort lines of text
        !            73:        vi      a popular screen editor
        !            74:        wc      count words, lines, characters in a file
        !            75: The next screen lists all the commands in /bin.
        !            76: /bin/confDirectory /conf contains:
        !            77: 
        !            78: /conf/kbdSubdirectory /conf/kbd contains keyboard support:
        !            79: 
        !            80: 
        !            81: You can change the operation of various keys on your keyboard by changing
        !            82: the appropriate file in /conf/kbd and running /etc/kbdinstall.
        !            83: /devDirectory /dev contains COHERENT devices:
        !            84: 
        !            85: Some important devices are:
        !            86:        /dev/at*        Cooked (block-by-block) hard disk partitions
        !            87:        /dev/color*     Virtual console: color video devices
        !            88:        /dev/com*       Serial port devices (COM1, COM2, COM3, COM4)
        !            89:        /dev/console    Console terminal
        !            90:        /dev/f*         Floppy disk devices
        !            91:        /dev/lpt*       Parallel port devices (LPT1, LPT2 and LPT3)
        !            92:        /dev/mono*      Virtual console: monochrome video devices
        !            93:        /dev/null       Bit bucket
        !            94:        /dev/pty*       Pseudo-terminal devices
        !            95:        /dev/rat*       Raw (character-by-character) hard disk partitions
        !            96:        /dev/rf*        Raw (character-by-character) floppy disk devices
        !            97:        /dev/rsd*       Raw (character-by-character) SCSI devices
        !            98:        /dev/sd*        Cooked (block-by-block) SCSI devices
        !            99:        /dev/tty*       Terminal devices
        !           100: 
        !           101: /etcDirectory /etc contains files and programs used in system administration:
        !           102: 
        !           103: Files of particular interest in /etc include:
        !           104:        /etc/brc        Executed when the system comes up single-user
        !           105:        /etc/domain     Defines the electronic mail "domain"
        !           106:        /etc/group      Defines user group membership information
        !           107:        /etc/passwd     Defines user login information
        !           108:        /etc/profile    Executed for each shell
        !           109:        /etc/rc         Executed when the system comes up multi-user
        !           110:        /etc/ttys       Defines status of terminals attached to system
        !           111:        /etc/uucpname   Defines the system name for use with UUCP
        !           112: 
        !           113: /etc/defaultDirectory /etc/default contains configuration files used by some commands:
        !           114: 
        !           115: Files of particular interest in /etc/default include:
        !           116:        /etc/default/async      Specifies serial port hardware configuration
        !           117:        /etc/default/msdos      Specifies defaults for the /bin/dos* commands
        !           118: 
        !           119: /libDirectory /lib contains libraries and C compiler phases:
        !           120: 
        !           121: /usrDirectory /usr contains a number of subdirectories:
        !           122: 
        !           123: 
        !           124:        /usr/adm        System administration files
        !           125:        /usr/bin        Additional COHERENT commands
        !           126:        /usr/dict       Dictionary for spell command
        !           127:        /usr/games      Games
        !           128:        /usr/include    Header files
        !           129:        /usr/lib        Additional libraries
        !           130:        /usr/man        COHERENT online manual pages
        !           131:        /usr/msgs       System-wide messages
        !           132:        /usr/pub        Public information
        !           133:        /usr/spool      Work area for daemon processes
        !           134:        /usr/src        Some sources and sample programs
        !           135:        /usr/tmp        Temporary file directory
        !           136: 
        !           137: COHERENT filenames often contain an extension following '.' which
        !           138: indicates the contents of the file.  Some common extensions are:
        !           139: 
        !           140:        .a      archive (or library) in ar format
        !           141:        .b      bc source
        !           142:        .c      C source
        !           143:        .h      C header
        !           144:        .i      C intermediate file (cpp output)
        !           145:        .l      lex source
        !           146:        .m      macro assembler source
        !           147:        .o      object file (unlinked)
        !           148:        .r      nroff or troff input
        !           149:        .s      assembler source
        !           150:        .tar    archive in tar format
        !           151:        .tar.Z  compressed tar-format archive, cf. tar, compress
        !           152:        .tmp    temporary file
        !           153:        .y      yacc source
        !           154:        .Z      compressed file, cf. compress/uncompress
        !           155: 
        !           156: Some commonly used diskette device names and formats are:
        !           157:        Device name  Sectors/track  Heads  Sectors  Bytes   Format
        !           158:        /dev/f9a0          9          2      720    360 KB   5.25"
        !           159:        /dev/fqa0          9          2     1440    720 KB   3.5"
        !           160:        /dev/fha0         15          2     2400    1.2 MB   5.25"
        !           161:        /dev/fva0         18          2     2880    1.44 MB  3.5"
        !           162: 
        !           163: Device names ending in '0' and '1' indicate drives A: and B:.
        !           164: In addition, wherever possible, common floppy device names are provided for
        !           165: compatibility with other operating systems.
        !           166: 
        !           167: To use a floppy disk filesystem with COHERENT, you must:
        !           168:        (1) format and verify it with /etc/fdformat,
        !           169:        (2) build an empty filesystem on it with /etc/mkfs,
        !           170:        (3) mount it with /bin/mount or /etc/mount,
        !           171:        (4) copy files to or from it, e.g. with /bin/cp or /bin/cpdir,
        !           172: and    (5) unmount it with /bin/umount or /etc/umount.
        !           173: 
        !           174: For example, to copy directory /dir to a 5.25" high density diskette in A:
        !           175:        /etc/fdformat -av /dev/rfha0
        !           176:        /etc/mkfs /dev/fha0 2400
        !           177:        /etc/mount /dev/fha0 /f0
        !           178:        cpdir -vd /dir /f0/dir
        !           179:        /etc/umount /dev/fha0
        !           180: /bin/mount and /bin/umount provide handy abbreviations for "mount" commands.
        !           181: 
        !           182: This concludes your brief introduction to COHERENT.
        !           183: To see this introduction again, type "/etc/coh_intro".
        !           184: To create a file with this information, type "/etc/coh_intro >/tmp/tour".
        !           185: 
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