Under many situations you may need to get a single file/many files from Linux ISO image.
You can mount ISO images via the loop device. You need to use mount command. First login as a root user:
Extract File(s) Under Linux OS
Let us assume that your ISO image name is disk1.iso.
Step # 1: First you need to create a directory /mnt/iso
# mkdir /mnt/iso
# mount -o loop disk1.iso /mnt/iso
Step # 3: Extract file
Now you can easily copy file called file.txt from iso disk image to /tmp directory :
# cd /mnt/iso
# cp file.txt /tmp
Step # 4: Copy foo.rpm from ISO disk image:
# cd /mnt/iso/RedHat/RPMS
# cp foo.rpm /tmp
Extract File(s) Under Windows XP or Vista Os
Windows do not have in built capability as provided by Linux to extract file. Luckly many third party software exist my favorite is Winimage http://www.winimage.com/. Download trial version (Iâ€™m sure you will love to registered this tiny utility later):
1) Install Winimage software
2) Just double click on Linux ISO file
3) Select the desired file and hit CTRL + X (or from Image menu select extract)
For more information read man pages:
Pre login banner is use for sending a warning message before authentication may be relevant for getting legal protection or just give out information to users. The contents of the specified file are sent to the remote user before authentication is allowed. This option is only available for protocol version 2. By default, no banner is displayed (if you are using latest version of Linux/UNIX then you do not have to worry about version issue).
Procedure to change OpenSSH pre login banner
1) By default sshd server turns off this feature.
2) Login as the root user; create your login banner file:
# vi /etc/ssh/sshd-banner
Welcome to nixCraft Remote Login!
3) Open sshd configuration file /etc/sshd/sshd_config using a text editor:
# vi /etc/sshd/sshd_config
4) Add/edit the following line:
5) Save file and restart the sshd server:
# /etc/init.d/sshd restart
6) Test your new banner (from Linux or UNIX workstation or use any other ssh client):
$ ssh email@example.com
Welcome to nixCraft Labs!
vivek@ rh3es.nixcraft.org’s password:
Please note that this feature may not work with third party ssh client such as Putty.
An ISO image is an archive file (disk image) of an optical disc using a conventional ISO (International Organization for Standardization) format. ISO image files typically have a file extension of .ISO. The name “ISO” comes from the ISO 9660 file system used with CD-ROM or DVD media, but an ISO image can also contain UDF file system because UDF is backward-compatible to ISO 9660. You can mount an ISO file or images via the loop device under Linux. It is possible to specify transfer functions (for encryption/decryption or other purposes) using loop device.