11-29-2006
Where does cron run from?
I have a script in the same directory as some files and directories im trying to tar up and I have it run in cron. Well it runs but says it can't find the directories, you need to be in the directory where the script is for it to work. Here is my cron and script its crappy but it does the trick =). Is there anyway in cron or my script to get this script to run correctly?
0,5,10,15,20,25,30,35,40,45,50,55 * * * * tmp/daily_backups/daily_backup.pl
$dirtocopy = '/tmp/daily_backups/';
$backupfile = 'backup.tar';
print "Tar'n up directories... \n";
print `tar -cf backup.tar Baro Nitro Turbo`;
print "Done Tar'n directories... \n";
print "Backing up $dirtocopy$backupfile \n";
print `ls | grep backup.tar | cpio -ocB > /dev/rmt/0`;
print "Backup is now complete... \n";
print "Rewinding tape... \n";
print `mt -f /dev/rmt/0 rewind`;
print "Tape rewound...";
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LEARN ABOUT OPENSOLARIS
chroot
chroot(1M) System Administration Commands chroot(1M)
NAME
chroot - change root directory for a command
SYNOPSIS
/usr/sbin/chroot newroot command
DESCRIPTION
The chroot utility causes command to be executed relative to newroot. The meaning of any initial slashes (/) in the path names is changed
to newroot for command and any of its child processes. Upon execution, the initial working directory is newroot.
Notice that redirecting the output of command to a file,
chroot newroot command >x
will create the file x relative to the original root of command, not the new one.
The new root path name is always relative to the current root. Even if a chroot is currently in effect, the newroot argument is relative to
the current root of the running process.
This command can be run only by the super-user.
RETURN VALUES
The exit status of chroot is the return value of command.
EXAMPLES
Example 1 Using the chroot Utility
The chroot utility provides an easy way to extract tar files (see tar(1)) written with absolute filenames to a different location. It is
necessary to copy the shared libraries used by tar (see ldd(1)) to the newroot filesystem.
example# mkdir /tmp/lib; cd /lib
example# cp ld.so.1 libc.so.1 libcmd.so.1 libdl.so.1
libsec.so.1 /tmp/lib
example# cp /usr/bin/tar /tmp
example# dd if=/dev/rmt/0 | chroot /tmp tar xvf -
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
cd(1), tar(1), chroot(2), ttyname(3C), attributes(5)
NOTES
Exercise extreme caution when referencing device files in the new root file system.
References by routines such as ttyname(3C) to stdin, stdout, and stderr will find that the device associated with the file descriptor is
unknown after chroot is run.
SunOS 5.11 15 Dec 2003 chroot(1M)