Linux
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to remove non-empty directory
- rm -rf <directory name>
to check hard drive partition:
- fdisk -l
- parted /dev/sda print
available memory in megabytes
- free -m
- convert -density 300 aluminum-44MeV.pdf aluminum-44MeV.png
Create CD-ROM ISO image with dd command:
- dd if=/dev/cdrom of=/tmp/cdimg1.iso