Question
You want to know if child processes of a parent process inherit the environment variables of the process that spawned it. Does the child process get the variables?
Answer
Yes (according to page 568 of The Linux Programming Interface).
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Problem scenario
You have read about disk throttling. What does it do?
Solution
Disk throttling is the limiting of I/O activity. Files are often downloaded at an even rate over the network. Batches of writes can happen while throttling read operations. This can allow for interruptions from other OS processes without excessive latency and a consistent user experience. A server’s performance can be improved by putting a cap on disk input/output operations.
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Continue reading “What Does It Mean to Throttle a Hard Disk?”
Problem scenario
You are running a quotacheck command on a Linux system. You get an error “quotacheck: Your kernel probably supports journaled quota but you are not using it. Consider switching to journaled quota to avoid running quotacheck after an unclean shutdown. “
Your /etc/fstab looks like this:
# <file system<mount point<type<options<dump<pass/dev/foo /bar ext4 errors=remount-ro 0 1
What should you do?
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Question
You have heard the terms homeostat and sleep homeostat. What do these terms mean?
Answer
“Homeostat (Sleep Homeostat): A neurobiologic structure or circuit that is believed to regulate sleep quality and quantity based on the amount and/or quality of prior wakefulness.” (Taken from page 151 of Cognitive Behavioral Treatment of Insomnia by Perlis et al.)
“Blessed are those drowsy ones: for they shall soon nod to sleep.” (Taken from page 38 of Thus Spake Zarathustra (Squid Classics 2017).)
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Problem scenario
You are using LibreOffice Draw to modify an .odg file. You know other slides exist, but you only see the first slide/page. How do you view other pages?
Solution
Press Page Down (aka PgDn) on your keyboard.
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Continue reading “How Do You See Other Pages in an .odg File?”
Problem scenario
How do you convert an .odg file to a .jpeg?
Solution (for Linux users with LibreOffice)
Open LibreOffice Draw. Go to File -Export. Then choose in the dropdown the .jpeg format.
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Continue reading “How Do You Convert an .odg File to a .jpeg?”
Problem scenario
You are using the GitLab GUI. You want to find files that end with .bar and have the patter “foo” in the content. How do you find them?
Solution
Use the Search feature. Use this as the search term for a given Group in GitLab (with “Any” for the “Project”):
foo extension:bar
(Do not use “.bar”.)
The source of this is https://docs.gitlab.com.
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Question
In I.T. culture, there is a term “pwn”. What does it mean?
Answer
In video game culture, there is a term “pwn” [1]. The past tense is “pwned” [1]. According to Wikipedia [2] it can refer to Phrack World News. It could be a reference to unauthorized computer usage (as it amounts to internet slang) and can refer to Phrack World News [3].
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Question
You are not sure if Chef uses pure Ruby or a DSL based on Ruby or Erlang. Does Chef use a Domain Specific Language?
Answer
It uses a Ruby-based domain specific language. The sources are as follows:
https://docs-archive.chef.io/release/12-0/dsl_recipe.html
https://cloudacademy.com/course/getting-started-chef/the-recipe-dsl/
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Problem scenario
“People who work in a state they do not live in may be subject to income tax withholding for both states.” (This quote was taken from https://www.shrm.org/resourcesandtools/legal-and-compliance/employment-law/pages/hybrid-work-legal-challenges.aspx.)
You read that some states make the remote employee pay income tax in addition to other taxes where the employer is located. What states are these?
Answer
Arkansas,
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Continue reading “What States Have Double Taxation on Income for Remote Workers?”