find "${HOME}/docs/"
You want the full path in quotes so that paths with spaces are handled properly. Brackets are good practice when concatenating strings.
this post was submitted on 26 Aug 2023
101 points (98.1% liked)
linuxmemes
21103 readers
1689 users here now
Hint: :q!
Sister communities:
- LemmyMemes: Memes
- LemmyShitpost: Anything and everything goes.
- RISA: Star Trek memes and shitposts
Community rules (click to expand)
1. Follow the site-wide rules
- Instance-wide TOS: https://legal.lemmy.world/tos/
- Lemmy code of conduct: https://join-lemmy.org/docs/code_of_conduct.html
2. Be civil
- Understand the difference between a joke and an insult.
- Do not harrass or attack members of the community for any reason.
- Leave remarks of "peasantry" to the PCMR community. If you dislike an OS/service/application, attack the thing you dislike, not the individuals who use it. Some people may not have a choice.
- Bigotry will not be tolerated.
- These rules are somewhat loosened when the subject is a public figure. Still, do not attack their person or incite harrassment.
3. Post Linux-related content
- Including Unix and BSD.
- Non-Linux content is acceptable as long as it makes a reference to Linux. For example, the poorly made mockery of
sudoin Windows. - No porn. Even if you watch it on a Linux machine.
4. No recent reposts
- Everybody uses Arch btw, can't quit Vim, and wants to interject for a moment. You can stop now.
Please report posts and comments that break these rules!
founded 1 year ago
MODERATORS
If the strings don't contain characters that help define a variable, like an underscore, how is it better practice to use curlies? It's it just for consistency? Have you had any style guides or linters critique the use of variables without them?
More than anything, I find that it's a good habit to maintain in order to avoid simple mistakes. It also makes variables easier to spot in code and maintains consistency.
foo=ding
foobar=dong
echo \$foobar
Brackets make it explicit what you're trying to do. Do you want "dingbar" or do you want "dong"? I forget what the actual behavior is if you don't use brackets here, because I always use brackets for this reason now
I believe the actual behavior here would be printing “dong” as the shell interpreter is greedy in its evaluation of variables.
the actual behavior here is to echo the literal string "$foobar", because the $ sign is escaped. so no variable expansion will take place at all.
Oh lol. It doesn't show the $ at all on my mobile app till I escaped it
ah, so it's up to the client. I'm using jerboa, in this case
You should use markdown's inline code (single `backtick`) and
block code
(triple backtick)
tags. They are consistent across most markdown renderers (except Reddit's, which uses four-space indentations (like, who the fuck thought that was a good idea?))
I did use triple backticks
“Concatenating”….
…. That sounds either exceptionally painful or extremely fun.
Quite possibly both…
This shit fucked me up so much when i was learning linux stuff. Especially cause a lot of my file paths had spaces. This is the way.
There's another
${HOME}/docs/
tl;dr - Second option usually.
I think a huge part of shell programming (besides recognizing when anything more maintainable will do 😂😂😂) is trying to allow others who aren't as familiar to maintain what you've written. Shell is full of pitfalls, not the least of which is quoting and guaranteeing how many arguments you pass to commands and functions.
To me, the whole point of quoting here is to be crystal clear about where command arguments begin and end in spite of variable substitution. For this reason I usually go for the second option. It very clearly describes how I'm trying to avoid a pitfall by wrapping each argument to find in a pair of quotes: in this case, double quotes to allow variable substitution.
Sometimes it's clearer to use the first approach. For example, if the constant parts of one of those arguments contains a lot of special characters, it may make it clearer to use the first approach with the constant parts wrapped in single quotes.
But even then there are more clear ways to create a string out of other strings. For example, the slightly slower, and more verbose use of printf and a variable, and then using that variable as an argument...wrapped in double quotes since it could contain special characters.
First one has the pitfall of a space at the end of the variable still causing it to fail.
Would a space at the end of the variable be ignored in the second one, though?
It would still be considered a single variable because the entire string is quoted. The first scenario would have split it into 2 variables.
Bash has the worst syntax rules I have seen, and the fact that you can do both of these doesn't help.
I am probably going to switch to fish for any scripting, Python would probably be better, but it seems to be much more complicated and I am too lazy to learn it.
I would've answered but I'm blind now /s