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Questions tagged [terminology]

For questions about words/terms that are specific to Unix and/or Linux.

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2answers
42 views

Is a file descriptor ever NOT open?

Of course a file can be open, or not open. However, a file descriptor by definition refers to an open file (right?). (Well, except when it refers to something besides a file, like a pipe or what ...
0
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2answers
43 views

What is it called when you use a subshell to make sure temporary variables from a command are not left hanging around?

What is the technique called when you want your variables to disappear after they are run in a subshell? $ (lookForMe=wee && find -type d -name "${lookForMe}_*") $ echo $lookForMe $
0
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2answers
157 views

Why not seeing shell globs as a “dialect” of regex?

As a newbie I often confuse Bash 3.x shell globs: ? # Match any single character. * # Match any string of characters (up until the asterisk). [set] # Match any character in set (but not ...
0
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0answers
19 views

What are files indicating state or error spitout during execution of a process called in Linux / Unix?

Say I ran a script and it succeded or failed and generated a file with a filename to indicate such a state or a specific error had occured on the last run. Also lets say that you could not rerun the ...
1
vote
3answers
74 views

Do variables and aliases fall under the same category?

This is a terminology/architecture question. Some of the most basic implementations for easier control of a system are variables and aliases (and some might add symlinks). Both variables and ...
21
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2answers
2k views

command line terminology: what are these parts of a command called?

At the command line I often use "simple" commands like mv foo/bar baz/bar but I don't know what to call all the parts of this: ┌1┐ ┌──2───┐ git checkout master │ └──────3──────┘ └───────4─────────...
3
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2answers
321 views

Globbing vs wildcards

What is the difference between globbing and wildcards, are they two terms for the same thing, or are they different?
0
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1answer
362 views

Why does ssh utility considered a pty?

I've read here that ssh is considered a pty. Why? If I run an ssh command in my console (say, in a Debian server), where comes the "pty" aspect of ssh here? For me, it's like I'm using any other ...
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1answer
49 views

What is the difference between shell builtins and shell keyboard shortcuts?

What is the difference between shell builtins (like cd or echo) and shell keyboard shortcuts (like ctrl+u or ctrl+l)? Both seems to me "builtins", what is the major difference by means of system ...
0
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2answers
173 views

Using a CLI after deleting all shells (rbash, bash, dash, and sh)

As for now, I use my CLI (Command Line Interface) with either rbash, bash, dash, or sh. Given this fact, one can assume that the CLI is not shell dependent, and that even if we will delete all of ...
0
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1answer
75 views

How come a Desktop Environment be one layer under a shell (kernel-DE-shell instead kernel-shell-DE)? [closed]

I ask the following question as a followup to this question. How come a Desktop Environment be one layer under a shell (kernel-DE-shell instead kernel-shell-DE)? Why I ask this question In Ubuntu, ...
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2answers
576 views

What is variable expansion in Bash?

I am sorry if the question seems absurd. I tried to read in several places what exactly is variable expansion and didn't quite understand. My understanding of the term: From what I've read so far it ...
1
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2answers
52 views

Should we call Bash Special parameters, “environment constants”?

After reading here and then here, I came to the conclusion, that what is called in Bash "Special parameters" is quite like environment variables, but the main difference is that we shouldn't reassign ...
14
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6answers
4k views

Drive name? What is the correct term for the “sda” part of “/dev/sda”?

fdisk(8) says: The device is usually /dev/sda, /dev/sdb or so. A device name refers to the entire disk. Old systems without libata (a library used inside the Linux kernel to support ATA ...
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votes
1answer
62 views

Why is it called “store.kde.org” (KDE-Store)? It's not a store [closed]

Why did people think it was a good idea to name the software distribution site for KDE "https://store.kde.org"? It's not a store. There's nothing that requires payment on there - a key requirement of ...
0
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1answer
520 views

What is iwlwifi's “lar_disable”?

I'm seeing a lot of posts reference lar_disable like this one for instance. I'm wondering what it does. modinfo iwlwifi just says, parm: lar_disable:disable LAR functionality (default: N) (...
0
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1answer
81 views

Text wrapping in Terminology

I just installed Enlightenment in OpenSuse Tumbleweed via YasT. I'm using E as the WM and entrance as the DM, if it matters. While checking its terminal emulator Terminology, I noticed that output ...
25
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3answers
2k views

How to say 'UN*X or *nix' in conversation or reading aloud? [closed]

Should it be 'star nix' or 'nix' or 'unix-like' or something totally different?
0
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1answer
149 views

What does e2fsck do during bootup?

Please assume I'm using a recent version of Debian Linux, on ext4, on a 2 TB Seagate Momentus hard drive, with all the default settings. A) What does e2fsck do during a normal bootup? (And what is ...
3
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1answer
949 views

terminology emulator lacks generic players in Lubuntu 16.04

terminology installed (apt update + apt install), and runs fine in a Lubuntu 16.04 fresh installation. But when trying to display a picture (or show thumbnail images with tyls), it always raises this ...
1
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1answer
461 views

What does the “al” in “alarm”, the default Arch Linux ARM processor username+password stand for?

ARM machines often have a default password. On Arch Linux, this is: User: alarm Password: alarm I am assuming that the "arm" part of "alarm" refers the architecture, but what does the "al" stand ...
9
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1answer
2k views

Can an interactive shell become non-interactive or vice versa?

Can an interactive shell become non-interactive or vice versa? Note: I've done a lot of research on the basic question, "What is the difference between interactive and non-interactive?", and the ...
10
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1answer
1k views

WHY a **login** shell over a **non-login** shell?

I have a basic understanding of dotfiles in *nix system. But I am still quite confused about this Difference between Login Shell and Non-Login Shell? A bunch of different answers (including multiple ...
1
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1answer
181 views

IP4LL: what is it?

On a desktop Debian Jessie GNU/Linux install, the file /etc/resolvconf/update-libc.d/avahi-daemon contains: #!/bin/sh # # If we have an unicast .local domain, we immediately disable avahi to avoid # ...
27
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1answer
1k views

Why does Plan 9 use “snarf” instead of “copy”?

When you watch presentations about Plan 9 and its acme editor you might notice that the name for copy is snarf (I wasn't able to find any meaningful explanation unfortunately). Why is it so? Is ...
19
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3answers
1k views

What does “on-line” mean, as used in man(1)?

On my system (Darwin 15.5.0), man(1) opens as follows: NAME man - format and display the on-line manual pages The file the page is formatted from, however, is clearly on disk: % man -w man /...
0
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2answers
102 views

Do we have 2 types of “Shells” in Unix? [duplicate]

As a Linux newcomer that really wants to understand Linux rather than just work with it automatically, I understand that the term "Shell" basically describes a software layer which is above the kernel ...
2
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1answer
49 views

How is the ability to do something on the fly and the ability to make that same thing permanent referred to in Unix / Linux?

I can think of many examples of this... You can use the ip/if* commands to set your network interface in the here and now, but you can edit a file like /etc/network/interfaces to make the changes ...
0
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1answer
35 views

Some terminology about CLI [duplicate]

Is there any difference in meaning between the following terms? Can they be used interchangeably? terminal console shell command line interface If any, what are the differences?
0
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1answer
38 views

What kind of times exist beside of runtime ? [closed]

I first encountered the expression "runtime" when s.o. told my that in Linux files ending in .ko are able to be loaded into the kernel at runtime to increase its functionality when needed. So, ...
9
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2answers
215 views

What does [[.ch.]] mean in a regex?

Alternate title: What is a "collating sequence" or "collating element" in a POSIX-compliant regex? I found the exact technical definition in Section 9.3.5 of the POSIX specs, as item #4 in the list, ...
1
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1answer
199 views

What can be considered as operating system? [closed]

I am talking about GNU/Linux but not about GNU or Linux! I know that Kernel is the core component in operating system but I want to know what defines the "operating system" (What can be considered as ...
6
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3answers
506 views

How do you call the “happy-dog” part of file “happy-dog.png”?

I just realized I don't know how file is called in file.ext. The whole file.ext is called a file or filename, ext is called extension but how do you call the file part itself of file.ext? For ...
33
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1answer
3k views

What is the significance of “tab” e.g. in “crontab” or “initab”?

What does the "tab" mean in "crontab" or "initab"? Having some idea of its meaning might help to mentally categorise files which contain the "tab" suffix and understand their relationship with the ...
6
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3answers
1k views

Does the shadow file have encrypted passwords?

man 5 shadow says this about the 2nd field: encrypted password Is that true nowadays? I think it should say "hashed password". Am I correct?
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2answers
106 views

What is the technical term for command line application environment programs?

Some programs that are run in the terminal, after calling them, switch the command line to their own environment, like "R" (statistical program language) or "GHCi" (interactive Haskell). What is ...
0
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2answers
948 views

Why do some processes end with the letter “d”? [duplicate]

Some Linux binaries end with a "d", for example sshd, httpd, ppd, etc. Why is this so?
23
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4answers
4k views

Terminology reconciliation: Display manager vs. session manager, Windowing system vs. Window manager

I am taking the Linux Foundation's Introduction to Linux course. Some of the terminology seems to overlap or contradict, especially when I try to supplement the course material with other sources, ...
1
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2answers
614 views

What is the concept hidden behind the term “command”?

I have been using, studying and developing for Linux for quite a few years now, and over time, I have successfully convinced a few people to join the cause, and make the switch to Linux. However, ...
10
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5answers
5k views

Why is “shebang” called “shebang”?

Does "shebang" mean "bang she"? Why not "hebang" as "bang he"?
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1answer
2k views

What does “quiet mode” mean for the mkfs command?

I was reading about the mkfs command and I came across something I don't quite understand: mkfs Syntax mkfs [-t fstype] [fs_options] device Options : ............ -q ...
3
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2answers
13k views

What does “batch mode” mean for the top command?

I was reading about the top command and I came across something I don't quite understand: top options: -b Run in batch mode. This is useful for sending output from top to other programs or to ...
20
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2answers
1k views

What does “magic tests” mean for the file command?

I was reading about the file command and I came across something I don't quite understand: file is designed to determine the kind of file being queried.... file accomplishes this by performing ...
2
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1answer
80 views

How to call a method of configuring the result of which is active until the first reboot?

For example, you can configure a network interface and other settings from the command line of your terminal. But you can also save the settings to the file /etc/network/interfaces (Debian GNU/Linux) ...
6
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2answers
422 views

What's the difference between 'expansion' and 'substitution' in terms of shell programming's terminology?

Expansion and Substitution seems to be interchangeble at same context in shell programming language. For example, some documents such as Bash reference manual, Bash Hackers Wiki use the word '...
6
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1answer
381 views

Confusion regarding the term 'mount' in Linux

I am reading the man page of mount and clone. I understand that mount is used to add a directory hierarchy to a mount point (a directory). In clone's man page, under the CLONE_NEWNS section, they ...
36
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4answers
9k views

What is the correct name for the “>” command

I was trying to find how to pass some text to a file without overwriting what's there already using the > command and I realised I don't know what it's called. Searching for right arrow or right ...
14
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2answers
4k views

Expansion of a shell variable and effect of glob and split on it

This post actually contains two separate questions but I think grouping them together will give some more context. I have gone through this question on quotes around variables but I do not quite ...
11
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3answers
2k views

Why BitchX is called BitchX?

Well, the title is pretty much self-explanatory, but for sake of completeness, I'm curious to know the reason for the name of BitchX. I searched on internet for etymology but it was a fail. I hope ...
1
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1answer
403 views

What is MEAN (on Ubuntu)?

This might initially seem like the sort of question that is easy to Google, but it's not. Instead of useful results, you get things like answers to the question "What does Ubuntu mean?", or "what ...