ISO Master and K3b.
It doesn't. ISO is a disk image format that is often used to distribute Linux and other CD images.
an image of tux.
mkdir aptech/Linux
No!
mkdir directoryname
I don't believe so although GIMP is a free image editor GNU Image Manipulation Program, most linux various are distros or distribution
Mount an iso of linux or a cd with an iso image onto a new virtual machine.
Linux from scratch is a book describing how to create and build your own Linux distribution from nothing, building every package from source and installing it.
"crontab -e".
True read-only USB disks require hardware support. Otherwise, you can still erase the disk with the same tools you used to create it in the first place. One method to create a read-only file system, that should work on most Linux distributions, is to use SquashFS. Create a directory (such as squash) and put the files you want on the disk in it. Create a SquashFS image of your directory. mksquashfs ./squash squash.img Partition the flash drive (such as with cfdisk or GParted). Make the partition the same size as or slightly larger than your SquashFS image. Write the SquashFS image to the partition you created. dd if=squash.img of=/dev/sdb1 bs=512.
In a Linux terminal, the command to create a new directory is: mkdir .