Source Code 1994 March/Source_Code_CD-ROM_Walnut_Creek_March_1994.iso/compsrcs/3b1/volume02/bsdln/part01

Internet Message Format | 1992-07-20 | 10.0 KB

Path: comp-sources-3b1
From: [e-mail] (David H. Brierley)
Subject:  v02i022:  BSD style ln command for the 3b1, Part01/01
Newsgroups: comp.sources.3b1
Approved: [e-mail]
X-Checksum-Snefru: 68486ca8 6eac5309 5899f837 63bfa8bc

Submitted-by: [e-mail] (David H. Brierley)
Posting-number: Volume 2, Issue 22
Archive-name: bsdln/part01

This is the README file for the Dave Brierley collection of miscellaneous
source programs.  The collection is posted in seven separate pieces but
all of the source came from the "misc" directory on my machine.  As a result
of this, there is only one README file and only one Makefile, although each
of the seven postings will contain a copy of these two files.  I suggest
that you obtain (or save) as many of these postings as you are interested
in, unpack them all in a single directory, and then compile the sources.
Note that some of the programs are actually shell scripts and therefore do
not need compilation.

bsdln.c
 A version of the ln command that follows the BSD behaviour.  I.e. if the
 target file exists, the command will fail.  The standard 3b1 version will
 remove the target.

#! /bin/sh
# This is a shell archive.  Remove anything before this line, then unpack
# it by saving it into a file and typing "sh file".  To overwrite existing
# files, type "sh file -c".  You can also feed this as standard input via
# unshar, or by typing "sh <file", e.g..  If this archive is complete, you
# will see the following message at the end:
#        "End of archive 1 (of 1)."
# Contents:  MANIFEST Makefile README bsdln.c
# Wrapped by dave@galaxia on Tue Jul 21 10:30:54 1992
PATH=/bin:/usr/bin:/usr/ucb ; export PATH
if test -f 'MANIFEST' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'MANIFEST'\"
else
echo shar: Extracting \"'MANIFEST'\" \(220 characters\)
sed "s/^X//" >'MANIFEST' <<'END_OF_FILE'
X   File Name        Archive #    Description
X-----------------------------------------------------------
X MANIFEST                   1
X Makefile                   1
X README                     1
X bsdln.c                    1
END_OF_FILE
if test 220 -ne `wc -c <'MANIFEST'`; then
    echo shar: \"'MANIFEST'\" unpacked with wrong size!
fi
# end of 'MANIFEST'
fi
if test -f 'Makefile' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'Makefile'\"
else
echo shar: Extracting \"'Makefile'\" \(374 characters\)
sed "s/^X//" >'Makefile' <<'END_OF_FILE'
XCFLAGS    = -O
X
Xall:        bsdln disktest email ndf techo wclipper
X
Xbsdln:        bsdln.o
X        $(CC) bsdln.o
X        mv a.out bsdln
X
Xdisktest:    disktest.o
X        $(CC) disktest.o
X        mv a.out disktest
X
Xemail:        email.o
X        $(CC) email.o
X        mv a.out email
X
Xndf:        ndf.o
X        $(CC) ndf.o
X        mv a.out ndf
X
Xtecho:        techo.o
X        $(CC) techo.o
X        mv a.out techo
X
Xwclipper:    wclipper.o
X        $(CC) wclipper.o
X        mv a.out wclipper
X
END_OF_FILE
if test 374 -ne `wc -c <'Makefile'`; then
    echo shar: \"'Makefile'\" unpacked with wrong size!
fi
# end of 'Makefile'
fi
if test -f 'README' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'README'\"
else
echo shar: Extracting \"'README'\" \(4280 characters\)
sed "s/^X//" >'README' <<'END_OF_FILE'
XThis is the README file for the Dave Brierley collection of miscellaneous
Xsource programs.  The collection is posted in seven separate pieces but
Xall of the source came from the "misc" directory on my machine.  As a result
Xof this, there is only one README file and only one Makefile, although each
Xof the seven postings will contain a copy of these two files.  I suggest
Xthat you obtain (or save) as many of these postings as you are interested
Xin, unpack them all in a single directory, and then compile the sources.
XNote that some of the programs are actually shell scripts and therefore do
Xnot need compilation.
X
XINSTALLATION INSTRUCTIONS:
X1. Compile all the source programs by typing "make all".  Edit the Makefile
X   if you did not unpack all seven of the pieces.  Note that the Makefile
X   does not contain explicit commands for using the shared library.  I always
X   depend on "ccc" to do this for me.
X2. Copy the resultant executables to your favorite bin directory.  I always
X   use "/usr/local/bin".
X3. Copy the various shell scripts to the bin directory and make then executable
X   using the chmod command.  The shell scripts are all distributed with a
X   suffix of ".sh".  I suggest you remove this suffix when you install it, but
X   that is entirely up to you.
X
X
XDescription of programs included in this package.  There is a line of dashes
Xseparating each of the seven pieces.
X
Xbsdln.c
X A version of the ln command that follows the BSD behaviour.  I.e. if the
X target file exists, the command will fail.  The standard 3b1 version will
X remove the target.
X
X--------------------------------------------------------------------------
X
Xinstall.sh
X A shell script version of the BSD install command.
X
Xnull.sh
X Zero out one or more files.
X
Xtolower.sh
X Convert file names to lower case.  Requires ksh.
X
Xtoupper.sh
X Convert file names to upper case.  Requires ksh.
X
X--------------------------------------------------------------------------
X
Xndf.c
X Almost emulates the BSD df command.  I say "almost" because I chose to
X display the numbers in terms of blocks instead of kbytes since everything
X else on the machine displays sizes in blocks.  Supports the "-i" option
X to displays inode information.  Also supports specifying any random
X directory as an argument and it will figure out what file system it is.
X
X--------------------------------------------------------------------------
X
Xdisktest.c
X A program used by the format script to test the floppy disk to be doubly
X sure that it is usable.
X
Xformat.sh
X Format a floppy disk.  Asks questions to determine desired parameters, such
X as number of cylinders and number of sectors.  Will optionally run an
X intensive surface test of the floppy (see disktest.c), build a file system
X structure, and make the floppy bootable.  The main processing is done in a
X loop so you can format multiple floppies easily.
X
Xnewfs.sh
X Reads the VHB from the floppy and then builds a file system structure on it.
X
X--------------------------------------------------------------------------
X
Xtecho.c
X A version of echo that allows direct access to termcap capabilities.  A lot
X easier to use than intermixing calls to echo with calls to tput.
X
Xtecho.1
X Hey, I actually wrote a man page for this one!
X
X--------------------------------------------------------------------------
X
Xwclipper.c
X A program to read in the wtmp file and output the tail end of it.  Useful
X if you want to maintain an N-day history of who has been using your system.
X The output size can be specified in terms of days or kbytes.
X
Xwtmp.fix.sh
X A shell script to control the operation of wclipper.
X
X--------------------------------------------------------------------------
X
Xemail.c
X A version of the "email" program.  This program should be installed as
X /usr/bin/email and it will be used by pcmgr (or by smgr) when you click
X on the envelope icon.  It provides a safe interface to the mail program
X by making sure the uid is set correctly and by doing a chdir to the
X users home directory (both of which are already being done by pcmgr).
X This version also provides a unique feature of reading an "rc" file
X from the users home directory (~/.email.rc), which can be used to specify
X what mail program to use.  See the sample provided.
X
Xemail.rc
X Sample .email.rc file.
END_OF_FILE
if test 4280 -ne `wc -c <'README'`; then
    echo shar: \"'README'\" unpacked with wrong size!
fi
# end of 'README'
fi
if test -f 'bsdln.c' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'bsdln.c'\"
else
echo shar: Extracting \"'bsdln.c'\" \(1544 characters\)
sed "s/^X//" >'bsdln.c' <<'END_OF_FILE'
X#include <stdio.h>
X#include <errno.h>
X#include <sys/types.h>
X#include <sys/stat.h>
X#include <string.h>
X
Xmain (argc, argv)
Xint             argc;
Xchar           *argv[];
X{
X    int             rc;
X    char            path1[BUFSIZ];
X    char            path2[BUFSIZ];
X    char           *slash;
X    struct stat     sbuf;
X
X    switch (argc) {
X    case 3:
X    (void) strcpy (path1, argv[1]);
X    (void) strcpy (path2, argv[2]);
X    break;
X    case 2:
X    (void) strcpy (path1, argv[1]);
X    (void) strcpy (path2, ".");
X    break;
X    default:
X    fprintf (stderr, "Usage: bsdln from_file to_file\n");
X    exit (1);
X    }
X
X    rc = stat (path1, &sbuf);
X    if (rc != 0) {
X    rc = errno;
X    perror ("bsdln");
X    (void) fprintf (stderr, "Unable to access file '%s'\n", path1);
X    exit (rc);
X    }
X    if ((sbuf.st_mode & S_IFMT) == S_IFDIR) {
X    (void) fprintf (stderr, "Error: source file cannot be a directory\n");
X    exit (1);
X    }
X
X    rc = stat (path2, &sbuf);
X    if (rc == 0) {
X    if ((sbuf.st_mode & S_IFMT) == S_IFDIR) {
X        slash = strrchr (path1, '/');
X        if (slash == NULL) {
X        slash = path1;
X        }
X        else {
X        ++slash;
X        }
X        if (strlen (path2) + strlen (slash) + 2 > BUFSIZ) {
X        (void) fprintf (stderr, "Unable to concatonate file names - please contact system developer\n");
X        exit (1);
X        }
X        (void) strcat (path2, "/");
X        (void) strcat (path2, slash);
X    }
X    }
X
X    rc = link (path1, path2);
X    if (rc != 0) {
X    rc = errno;
X    perror ("bsdln");
X    (void) fprintf (stderr, "Unable to link file '%s' to file '%s'\n",
X            path1, path2);
X    }
X
X    exit (rc);
X
X}
END_OF_FILE
if test 1544 -ne `wc -c <'bsdln.c'`; then
    echo shar: \"'bsdln.c'\" unpacked with wrong size!
fi
# end of 'bsdln.c'
fi
echo shar: End of archive 1 \(of 1\).
cp /dev/null ark1isdone
MISSING=""
for I in 1 ; do
    if test ! -f ark${I}isdone ; then
    MISSING="${MISSING} ${I}"
    fi
done
if test "${MISSING}" = "" ; then
    echo You have the archive.
    rm -f ark[1-9]isdone
else
    echo You still need to unpack the following archives:
    echo "        " ${MISSING}
fi
##  End of shell archive.
exit 0
--
David H. Brierley
Home: [e-mail]; Work: [e-mail]
Send comp.sources.3b1 submissions to [e-mail]
%% Can I be excused, my brain is full. **