I misused: "sudo rm -rf /*" Post: 303030031

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Top Forums UNIX for Beginners Questions & Answers I misused: "sudo rm -rf /*" Post 303030031 by Neo on Monday 4th of February 2019 09:20:10 PM

02-04-2019

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First of all, you can restore MacOS when the entire operating system is corrupted using your Time Machine backup.

Not long ago, I was upgrading one of my Macs and the system froze in the middle of OS installation. The box was dead. It would not boot and would barely flicker when powered on.

I went to the web and Googled "restore MacOS from Time Machine" and followed the instructions to hold down some keys, boot off the Time Machine backup, and soon I had my entire ex-corrupted system up and working again. Yea!

OBTW, I own four (active and fully backed up) Macs. One super high end MacPro (my main development machine with 34" ASUS gaming monitor), one MacMini, which I use as a kind of active network storage device, and two MacBook Airs. Each of these machines has a full and mostly current Time Machine backup (based on the last time I upgraded the OS or how active I use it) and I keep it that way; especially for my development machine where I work daily.

Hence, the moral of my story is that you must have backups. There is no excuse for not having them with cheap external SSD drives on the market. Having backups one of the most fundamental things you can do to secure you computer data. It's your responsibility to do this.

So, when you do something wrong and break your system, or the system breaks due to some disk error or other problem, you can restore from backup. Systems always break. They will break at some point in time for some reason you cannot even imagine. This is just as basic of an understanding as making sure you have a spare tire in the back of you car when drive, or as basic has having an extra shoe for your horse on your farm. Your body stores fat as a backup energy supply for your body. Backups are a part of nature and are core to your security.

There is no excuse for not having a backup. Just do it and do it often.

Cheers.

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LEARN ABOUT DEBIAN

bootcdbackup

BOOTCDBACKUP(1) 						   bootcd utils 						   BOOTCDBACKUP(1)

NAME

       bootcdbackup - create a bootable offline backup of a unix system

SYNOPSIS

       bootcdbackup [-i] [-v] [-s] [-c <config directory>] [-url <url] [-nomount] [-2diskconf <file>] <dev> <name> <builddir>

DESCRIPTION

       bootcdbackup  creates a offline backup from a installed system. You need a running bootcd to boot the system with. This CD/DVD is booted on
       the system and bootcdbackup creates a bootable CD/DVD with the bootcd kernel and the backup disk as tar-file.

       To restore or clone the system, boot the CD/DVD image and install it with bootcd2disk -c <name> on the system.

       bootcdbackup can try to discover the disk partition by searching for fstab on the given partition. A other way to backup the partition  ta-
       ble is the program bootcdmk2diskconf which creates a configuration file on a running system.

OPTIONS

       -i  The bootcdbackup runs in interactive mode and you can run each function manually. This option is useful for debugging.

       -v  The option "-v" (verbose) adds messages on running.

       -s  This option can be used to disable interactive questions and to try to ignore errors.

       -c <config directory>
	   The configuration directory which includes the file "bootcdbackup.conf", default is "/etc/bootcd".

       -url <url>
	   If bootcdbackup is slow on your system (because of a slow CD/DVD drive or the HP ILO virtual CD interface), you can use an image server
	   to get the image from.

	   bootcdbackup use the SWAP partition of your upcoming system as temporary space and copy the image from the configured image	server	to
	   this partition and use it as image.	The image server url is configured with this option.

       -nomount
	   The target disk should not be mounted and no search for fstab is done.

       --cpio
	   Normally  as  backup  tool  star  will be used if selinux files have to be backed up and cpio will be used if not. With this option the
	   usage of cpio can be forced.

       --star
	   Normally as backup tool star will be used if selinux files have to be backed up and cpio will be used if  not.  With  this  option  the
	   usage of star can be forced.

       -2diskconf <file>
	   The	parameter  configures a bootcd2disk.conf for the restore of the system done by bootcd2disk.  The configuration file can be created
	   with the command bootcdmk2diskconf.

	<dev>
	   Configures the device where bootcdbackup finds the file "fstab" and discover the configuration for the restore.

	<name>
	   The name of the backup (no blanks!) is used on the creation time and to restore the backup with bootcd2disk -c <name>.

	<builddir>
	   Builddir is an directory on the backup system where bootcdbackup build the backup CD/DVD. Space for the CD/DVD image,  for  compression
	   and the data is needed!

       All other configuration has to be done in the config files.

FILES

       /etc/bootcd/bootcdbackup.conf

       Configuration for bootcdbackup.

SEE ALSO

       Documentation in bootcdbackup.conf

       bootcdbackup.conf(5), bootcd(1), bootcdflopcp(1), bootcdwrite(1)

AUTHOR

       This  manual  page  was written by Bernd Schumacher <bernd.schumacher@hp.com> and Carsten Dinkelmann <Carsten.Dinkelmann@foobar-cpa.de> for
       the Debian GNU/Linux system (but may be used by others).

bootcdbackup							    2007-07-05							   BOOTCDBACKUP(1)