fdisk -l
How to list filesystem disk space usage
df -T -h
How to list mounted devices
mount
How to list PCI devices
lspci or /sbin/lspci
If the first does not work try the latter.
How to list USB devices
lsusb
How to forcefully unmount CD/DVD-ROM manually
umount /media/cdrom0/ -l
How to remount /etc/fstab without rebooting
mount -a
How to generate MD5 checksum files
md5sum file.iso > file.iso.md5
How to check MD5 checksum of files
e.g. Assumed that file.iso and file.iso.md5 are in the same folder
md5sum -c file.iso.md5
How to mount/unmount Image (ISO) files without burning
mkdir /media/iso
modprobe loop
mount file.iso /media/iso/ -t iso9660 -o loop
umount /media/iso/
How to change computer name
hostname your_new_computer_name
How to access network folders without mounting
e.g. Assumed that network connections have been configured properly
Network computer’s IP: 192.168.0.1
Shared folder’s name: linux
smb://192.168.0.1/linux
How to connect into remote Fedora desktop
e.g. Assumed that remote Fedora machine have configured Remote Desktop
Remote Fedora machine: 192.168.0.1
vncviewer -fullscreen 192.168.0.1:0
How to install support for NTFS
yum -y install kernel-module-ntfs-$(uname -r)
How to disable history listing in Console mode
rm -f $HOME/.bash_history
touch $HOME/.bash_history
chmod 000 $HOME/.bash_history
How to use Fedora Installation CD, to gain root user access
Insert Fedora CD #1 into your CD-ROM and boot from it
linux rescue
How to restart GNOME/KDE without rebooting computer
Press ‘Ctrl + Alt + Backspace’
How to switch to Console mode in GNOME/KDE
Press ‘Ctrl + Alt + F1′ (F2 - F6)
To switch back to GNOME/KDE modePress ‘Alt + F7′
How to install/uninstall .rpm files
To install .rpm filerpm -i package_file.rpm
To uninstall .rpm filerpm -e package_name
How to set System-wide Environment Variables
cp /etc/bash.bashrc /etc/bash.bashrc_backupg
edit /etc/bash.bashrc
Append the System-wide Environment Variables at the end of file and save.
How to save “man” outputs into files
man command | col -b > file.txt
How to convert Wallpaper to Splash Image for GRUB menu
convert -resize 640×480 -colors 14 wallpaper.png
splashimage.xpm && gzip splashimage.xpm
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source:http://linuxpoison.blogspot.com/2008/06/13578175808877.html