windows 10 file explorer not responding

Solution: in search bar type: file explorer options, click the search result > on General tab, click "Clear" button > click OK

How to freeze panes in Microsoft Excel

1. Freeze rows: select the row under the bottom last row that you want to freeze, View > Freeze Panes > Freeze Panes
2. Freeze columns: select the column right to the last column that you want to freeze, View > Freeze Panes > Freeze Panes
3. Freeze both rows and columns, select the intersection cell of step 1 and 2, View > Freeze Panes > Freeze Panes

bash command line search in command history

On command line, type Ctrl r, then start type the key word you want to search, it will show the match,
once your see the exact match, you can hit Return to run it, or use arrow keys to move cursor and edit.

So far the best solution for Windows 10 disk 100% percent usage

1. In windows 10 search bar, enter cmd, in search result right click "command prompt",select "Run as administrator".

2. In DOS command window, type: chkdsk /r c: (or whichever disk you installed Windows 10),it will ask that it can lock the drive right now,
would you like to do disk check next reboot? answer Y

3.Reboot, it will check and repair specified disk. it usually is stuck at a percentage but still working, just be patient and wait.
C drive is 90 G on my laptop, it takes about 30 minutes, my desktop C drive 130G, it takes one hour.
somebody online even said it takes a day or days, not sure how huge is their disk.

4. It might be better to combine with other solutions like http://hometownwind.blogspot.ca/2017/06/windows-10-too-slow-disk-usage-100.html and disable all unused services.

5.Disable unnecessary services: In windows 10 search bar, enter services, in search result right click Services, select "Run as administrator".
right click a service > properties, change "Startup type" to manual or disabled, then Apply, OK.


Following are some services which can be safely set to MANUAL/DISABLED:

Connected User Experiences and Telemetry
Diagnostic Policy Service
Diagnostic Tracking Service
Distributed Link Tracking Client (If your computer is not connected to any network)
dmwappushsvc
Downloaded Maps Manager (If you don't use Maps app)
IP Helper (If you don't use IPv6 connection)
Program Compatibility Assistant Service
Print Spooler (If you don't have a printer)
Remote Registry (You can set it to DISABLED for Security purposes)
Secondary Logon
TCP/IP NetBIOS Helper (If you are not in a workgroup network)
Touch Keyboard and Handwriting Panel Service (If you don't want to use touch keyboard and handwriting features)
Windows Defender Service (If you don't use Windows Defender program)
Windows Error Reporting Service
Windows Image Acquisition (WIA) (If you don't have a scanner)
Windows Search (If you don't use Windows Search feature frequently)
Apart from the above mentioned services, You can also set a few other services startup type to MANUAL such as services installed by your graphics card driver (Intel, nVidia, AMD, etc),
your sound card driver (Realtek, Creative, etc).

Secure Chrome browser to prevent memory leak between tabs

In the Chrome address bar enter chrome://flags/#enable-site-per-process and press Enter.
Next to 'Strict site isolation', click Enable.
If you don't see 'Strict site isolation', update Chrome to latest version
relaunch Chrome

How to check optical drive CD drive DVD drive capacity ability attributes in Linux?

[root@localhost mnt]# cat /proc/sys/dev/cdrom/info
CD-ROM information, Id: cdrom.c 3.20 2003/12/17

drive name: sr0
drive speed: 24
drive # of slots: 1
Can close tray: 1
Can open tray: 1
Can lock tray: 1
Can change speed: 1
Can select disk: 0
Can read multisession: 1
Can read MCN: 1
Reports media changed: 1
Can play audio: 1
Can write CD-R: 0
Can write CD-RW: 0
Can read DVD: 0
Can write DVD-R: 0
Can write DVD-RAM: 0
Can read MRW: 0
Can write MRW: 0
Can write RAM: 0


[root@localhost mnt]#