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Read more about the article Find user login history – last and lastb commands in Linux

Find user login history – last and lastb commands in Linux

  • Post author:Karunesh Johri
  • Post published:October 3, 2018
  • Post category:Tutorials
  • Post comments:0 Comments

1.0 last and lastb The last command gives a chronological list of user logins in a Linux system for a period of time. The lastb commands gives a similar list…

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Dovecot: imap Error: open (/var/mail/username) failed

  • Post author:Karunesh Johri
  • Post published:October 3, 2018
  • Post category:Troubleshooting

While configuring mail on a Ubuntu Linux server running the Postfix mail server and Dovecot IMAP server, the following errors were observed in the mail log files, dovecot: imap(user1): Error:…

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Read more about the article Linux process execution time

Linux process execution time

  • Post author:Karunesh Johri
  • Post published:September 24, 2018
  • Post category:Tutorials
  • Post comments:0 Comments

Execution time A process has an execution time associated with it. The execution time comprises of two parts, the user time and the system time. The user time is the…

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Read more about the article Remote Display With the X – Window System

Remote Display With the X – Window System

  • Post author:Karunesh Johri
  • Post published:September 22, 2018
  • Post category:Troubleshooting
  • Post comments:0 Comments

X - Window system is a network-transparent window system. X11 server is the display server that manages the output on the bit-mapped display hardware. An application (or client) does the…

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