Fix a "Secure Connection Failed" - Firefox/Mozila

1. In the Location bar, type about:config and press Enter. The about:config "This might void your warranty!" warning page may appear.
2. Click I'll be careful, I promise! to continue to the about:config page.
3. copy the next security.ssl.enable_ocsp_stapling and paste it in the search field
4. double-click on it to make it false
5. close the page, exit firefox and restart it.

probably the problem is the web site, when the problem resolved by the site, go back and switch the setting to true again.

MYSQL

https://www.linode.com/docs/databases/mysql/how-to-install-mysql-on-centos-7

https://www.digitalocean.com/community/tutorials/how-to-install-and-secure-phpmyadmin-with-apache-on-a-centos-7-server

https://www.liberiangeek.net/2014/09/install-phpmyadmin-centos-7-lamp-support/

https://www.digitalocean.com/community/tutorials/how-to-install-linux-apache-mysql-php-lamp-stack-on-centos-7


http://www.cyberciti.biz/faq/rhel-centos-fedora-linux-yum-command-howto/

Change Timezone and Time

Generic procedure to change timezone under Linux

Cd to /etc, run:

# cd /etc

Create a symlink to file localtime:

# ln -sf /usr/share/zoneinfo/EST localtime

OR some distro use /usr/share/zoneinfo/dirname/zonefile format:

# ln -sf /usr/share/zoneinfo/EST localtime

OR if you want to set up it to IST (Asia/Calcutta):

# ln -sf /usr/share/zoneinfo/Asia/Calcutta localtime

date --set="2016-04-27 13:30 PM"

Pen drive show empty even when data exists

Click on "Start" -->Run --> Type cmd and press Enter.

Here I assume your pendrive drive letter as G:

Enter this command.

attrib -h -r -s /s /d g:\*.* --> Press Enter

Squid Access log with Time format

perl -pe 's/\d+/localtime($&)/e' access.log  > test.log

cat test.log | grep 172.20.10.50 > test3.log

cat test3.log | grep -ir "Apr 30" > test5.log


Time change

date --set="2010-04-06 10:25 PM"

Device eth0 does not seem to be present, delaying initialization

The simple fix is to remove the persistent rule and give it a reboot. Don’t forget to update the networks file

/etc/sysconfig/network-scripts/ifcfg-ethx

Comment or Modify UUID and MAC Address

vi /etc/sysconfig/network-scripts/ifcfg-eth0 

rm -f /etc/udev/rules.d/70-persistent-net.rules 

 reboot  

1. If you have not already, you will need to download a 32-bit or 64-bit Windows 8 or 8.1 ISO file, and save it to your desktop.

2. If you have not already, download and install the Windows 7 USB/DVD Download Tool.

(At site)

3. Run the Windows 7 USB/DVD Download Tool, and click/tap on the Browse button. (see screenshot below)

 

4. Select the downloaded ISO file (step 1), and click/tap on Open. (see screenshot below)

 

5. Click/tap on Next, and do either step 6 or 7 below. (see screenshot below)