Microsoft TODO app is worth checking.

Microsoft has a TODO list app which can help you keep track of all your pesky tasks. You can download the app from https://to-do.microsoft.com/tasks/ . Some of the very useful features in TODO are below: Most people need to keep track of tasks that arrive in their emails and need to do at a later … Continue reading Microsoft TODO app is worth checking.

postfix mail errors

While starting postfix we may get an error: $ systemctl restart postfix /usr/sbin/postconf: fatal: parameter inet_interfaces: no local interface found for ::1 Failed to start Postfix Mail Transport Agent If we try to send email we get and error: $ echo "test email" | sendmail my.email@gmail.comsendmail: fatal: parameter inet_interfaces: no local interface found for ::1 … Continue reading postfix mail errors

Use Windows VScode to edit Linux files.

VScode is one of the best code editors with lots of add-on packages. Although you can install VScode in linux and use X windows to edit in linux, most people run VScode in Windows and would like to edit Linux files from Windows within VScode. There is a simple way to do this using the … Continue reading Use Windows VScode to edit Linux files.

Install Python pip on RHEL/Centos 7

When you initially try to install pip you may get an error as below: # python --version Python 2.7.5 [root]# yum install python-pip No package python-pip available. Error: Nothing to do We need to install epel-release first: [root] # yum install epel-release Installed: epel-release.noarch 0:7-11 Next install pip: [root]# yum install python-pip Installed: python2-pip.noarch 0:8.1.2-10.el7 … Continue reading Install Python pip on RHEL/Centos 7

Connect Excel to Cloudera Hive/Impala

Below procedure will help you connect Microsoft Excel to Cloudera Impala or Hive using ODBC driver. First download and install the MIT Kerberos Client for windows from Kerberos for Windows Release 4.1 - current release Make sure you get the Kerberos userid/password from the Cloudera Administrator and your are able to login and get a … Continue reading Connect Excel to Cloudera Hive/Impala

How to archive or delete old Office365 emails

There are two ways we can archive or delete old emails in Office365 outlook mailbox. You can use Outlook in Desktop and right click the inbox folder and select Properties->AutoArchive and select the options to archive or delete after preferred number of days.You can use Mozilla Thunderbird email client and right click on the email … Continue reading How to archive or delete old Office365 emails

Anaconda Python notes

Some notes on Anaconda python package manager: Reference: https://medium.freecodecamp.org/why-you-need-python-environments-and-how-to-manage-them-with-conda-85f155f4353c https://towardsdatascience.com/a-guide-to-conda-environments-bc6180fc533Conda is the main installer for the Anaconda packagesConda can be used to create multiple environments with different python or other package versions.The Anaconda packages are installed under /<some path>/Anaconda3/pkgs and other sub-directoriesInside a new Conda installation, the root environment is activated by default, so you … Continue reading Anaconda Python notes

TLS and SSL notes

Following are some concepts used in TLS/SSL configurations: Private Key: The key that is not shared with other connections but just used to decrypt the payload encrypted with public certificate.Public Certificate: The certificate that is provided to the remote connection as part of the SSL/TLS negotiations used to encrypt the message.CSR: certificate signing request is … Continue reading TLS and SSL notes

Manually Connecting an SSSD Client to an Active Directory Domain

Following is a good article which worked successfully to connect Centos7 to Active Directory for users in AD to be able to login to Centos. Manually Connecting an SSSD Client to an Active Directory Domain https://access.redhat.com/articles/3023951   Another useful testing procedures blog: QA:Testcase Active Directory Setup https://fedoraproject.org/wiki/QA:Testcase_Active_Directory_Setup   Realmd and SSSD Active Directory Authentication https://outsideit.net/realmd-sssd-ad-authentication/Continue reading Manually Connecting an SSSD Client to an Active Directory Domain

Wireshark commands

Some Wireshark filter fields match against multiple protocol fields. For example, "ip.addr" matches against both the IP source and destination addresses in the IP header. The same is true for "tcp.port", "udp.port", "eth.addr", and others. It's important to note that ip.addr == 10.43.54.65 is equivalent to ip.src == 10.43.54.65 or ip.dst == 10.43.54.65 This can be counterintuitive in some cases. … Continue reading Wireshark commands