The Answer Squad

I wanted to a share a few Linux commands I found myself using this weekend while moving some data around and extracting some video files from an iso.
The first one is used to mount an iso file in Linux so that you can browse it like any other directory.
You will need root credential for this

First thing we need to is make a directory to mount to:
mkdir -p /mnt/disk

Next we will mount the iso to that location

mount -o loop disk1.iso /mnt/disk

Now move to the directory,

cd  /mnt/disk
and list the contents.
ls

The next command we are going to explore is df
The df command is used in this syntac df [OPTION]… [FILE]…
-a, –all include dummy file systems
-B, –block-size=SIZE use SIZE-byte blocks
-h, –human-readable print sizes in human readable format (e.g., 1K 234M 2G)
-H, –si likewise, but use powers of 1000 not 1024
-i, –inodes list inode information instead of block usage
-k like –block-size=1K
-l, –local limit listing to local file systems
–no-sync do not invoke sync before getting usage info (default)
-P, –portability use the POSIX output format
–sync invoke sync before getting usage info
-t, –type=TYPE limit listing to file systems of type TYPE
-T, –print-type print file system type
-x, –exclude-type=TYPE limit listing to file systems not of type TYPE
–version output version information and exit

df -h

The above command is one of the most commonly used commands as it displays the sizes in an easy to read format as shown in the below example.

Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1              71G   32G   35G  48% /
tmpfs                 691M     0  691M   0% /lib/init/rw
varrun                691M  312K  690M   1% /var/run
varlock               691M     0  691M   0% /var/lock
udev                  691M  140K  690M   1% /dev
tmpfs                 691M  272K  690M   1% /dev/shm
lrm                   691M  2.4M  688M   1% /lib/modules/2.6.28-11-generic/volatile