The frequent used operation in Linux system

The frequently used operation in Linux system   

2017-04-08 12:48:09 

1. mount the hard disk: 

　　#: fdisk -l     %% use this operation to check how many and what disk it found in the computer.

　　#: mkdir yiDongYingPan   %% mkdir a new file as the location to mount i.e. take all the files from your disk into this file .

　　#: mount /dev/sdc1 /home/wx/data/yiDongYingPan/

　　then, you can open file: yiDongYingPan to operate your file now.

2. clear the RAM:

　　#: free -m    %% to check the memory usage of current PC

　　#: sync

　　#: echo 3 > /proc/sys/vm/drop_caches

3. when new system installed the Yakuake, it often shown me the error like followings:

    Yakuake was unable to load the Konsole component.
    A Konsole installation is required to use Yakuake. 

==>> Solution: ???

4. Unable to access “605 GB Volume”

Error mounting /dev/sda5 at /media/wangxiao/E1F171026416B63F: Command-line `mount -t "ntfs" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,dmask=0077,fmask=0177" "/dev/sda5" "/media/wangxiao/E1F171026416B63F"' exited with non-zero exit status 14: The disk contains an unclean file system (0, 0).
Metadata kept in Windows cache, refused to mount.
Failed to mount '/dev/sda5': Operation not permitted
The NTFS partition is in an unsafe state. Please resume and shutdown
Windows fully (no hibernation or fast restarting), or mount the volume
read-only with the 'ro' mount option.

==>> sudo ntfsfix /dev/sda5

5.