L'Antre du Tryphon

Postfix can replace an outgoing email address by another one. To do so, you must perform these steps: Add in /etc/postfix/main.cf the following line smtp_generic_maps = hash:/etc/postfix/generic_maps Add in hash:/etc/postfix/generic_maps a

Most of the time, having a journal for ext3 and ext4 partitions is pretty useful. Nevertheless, you can prevent creating a journal by adding the option ^has_journal. For example: mkfs

“parted” is a replacement for “fdisk” of Linux.  It can handle disks larger than 2 TB.  Issue this command to launch “parted” where /dev/sdL is the disk you want to

Unmount the partition umount /mnt Unmap the partition cryptsetup luksClose securebackup

Map the partition cryptsetup luksOpen /dev/sdXN securebackup Mount the partition mount /dev/mapper/securebackup /mnt

To setup partition encryption on Ubuntu, perform the following steps: Install the required software apt-get install cryptsetup For more security, erase the partition you want to encrypt with one of

The loop device on Unix lets access a file as a block device.  Disks are block devices.  So, it is possible to use a file as a disk.  The first

It is possible to securely connect to a SSH server without a password. To do so, you must perform the following steps. It assumes that both machine are running a

You can connect to a remote host [remote-host] using another machine [proxy-host]. This can be accomplished if the [proxy-host] as an SSH server running. To do so, logon to the

I can bet that you have no idea what the Unix timeline looks like. Curious? Download this PDF file from www.levenez.com.