Linux Commands

System Information Commands

• df: The df command displays filesystem disk space usage for all mounted partitions. "df -h" is probably the most useful - it uses megabytes (M) and gigabytes (G) instead of blocks to report. (-h means "human-readable")

• du: The du command displays the disk usage for a directory. It can either display the space used for all subdirectories or the total for the directory you run it on. Example:

user@users-desktop:~$ du /media/floppy 1032    /media/floppy/files 1036    /media/floppy/ user@users-desktop:~$ du -sh /media/floppy 1.1M    /media/floppy/

• -s means "Summary" and -h means "Human Readable"

• free: The free command displays the amount of free and used memory in the system. "free -m" will give the information using megabytes, which is probably most useful for current computers.

• top: The top command displays information on your Linux system, running processes and system resources, including CPU, RAM & swap usage and total number of tasks being run. To exit top, press"q".

• uname -a: The uname command with the -a option prints all system information, including machine name, kernel name & version, and a few other details. Most useful for checking which kernel you're using.

• lsb_release -a: The lsb_release command with the -a option prints version information for the Linux release you're running, for example:

Clearing history from terminal

history -c

For listing shares in a network
~$ smbclient -L 192.168.1.2 -U%


For mounting a file in network

dbott@gutsy:~$ sudo mount -t cifs //192.168.1.2/Music /home/dbott/Music -o iocharset=utf8,file_mode=0777,dir_mode=0777