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07 Aug 2019 5 minutes read
FB4 Advice: Safely Removing a File or Directory in Unix
  • Advanced topics Basic stuff Scripts Troubleshooting

Advice: Safely Removing a File or Directory in Unix

Unix Tutorial

Removing files and directories is a very common task, so in some environments support engineers or …

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26 Jul 2019 3 minutes read
FB4 Great Things You Can Confirm With Dmidecode
  • Advanced topics Linux

Great Things You Can Confirm With Dmidecode

I’ve just started working on the Linux Commands section of Unix Tutorial, and dmidecode is one of the best …

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25 Jul 2019 1 minutes read
FB4 Show Servers Across All OpenStack Projects
  • Advanced topics Virtualization

Show Servers Across All OpenStack Projects

I’m positive that sometime later this year I’ll revisit OpenStack basics, but for now there’s just no …

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17 Jul 2019 2 minutes read
FB4 Free Up Reserved Space in Filesystems
  • Advanced topics How-To Troubleshooting

Free Up Reserved Space in Filesystems

You’re probably familiar with tune2fs command, it’s great for reporting filesystem layout and configuration …

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06 Jul 2019 2 minutes read
FB4 Card Reader Issues in Ubuntu 19.04 on Dell XPS 13 9380
  • Advanced topics Troubleshooting Ubuntu

Card Reader Issues in Ubuntu 19.04 on Dell XPS 13 9380

It appears there’s a long-standing malfunction of various microSD card readers running Linux. In my particular …

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28 Jun 2019 3 minutes read
FB4 Trying NTP From Cloudflare
  • Advanced topics News

Trying NTP From Cloudflare

I’ve read a really interesting article on Cloudflare blog about NTP – Network Time Protocol – and its current set …

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18 Jun 2019 2 minutes read
FB4 Show All TCP Connections With Lsof
  • Advanced topics Troubleshooting

Show All TCP Connections With Lsof

I’ve spoken about lsof command briefly a few times, but think it deserves a few more mentions just because …

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13 Jun 2019 4 minutes read
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  • Advanced topics How-To Linux Unix Tutorial Projects

Use OfflineIMAP for Receiving Email

This week’s Unix Tutorial Project is super geeky and fun: I’m setting up text-based email archive system …

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01 Jun 2019 2 minutes read
FB4 Using Chrony for Time Keeping
  • Advanced topics

Using Chrony for Time Keeping

chrony is the default NTP service supplied with Red Hat Enterprise Linux 7 and newer RHEL versions, so it’s been …

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24 May 2019 3 minutes read
FB4 Test SSHd Config on a Different SSH Port
  • Advanced topics Security Troubleshooting

Test SSHd Config on a Different SSH Port

Sometimes you need to tweak your SSH daemon on an important system and you just don’t know if particular settings …

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