How do you shell expand your variables and why?
How do you shell expand your variables and why?
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I typically use
find "$HOME/docs", but with a few caveats:- In Zsh or Fish, the quotes are unnecessary:
find $HOME/docs - If I'm using anything potentially destructive:
mv "${HOME:?}/bin" ... - Of course, if it's followed by a valid identifier character, I'll add braces:
"${basename}_$num.txt" - I'm pretty inconsistent when globbing:
"$HOME"/docs/*or"$HOME/docs/"*are common for me. - I don't use
"${HOME}"unless I actually need the braces. The reason? I write more Zsh than anything, and the braces are even less necessary in Zsh:$#array[3]actually gets the length of the third element of the array, rather than substituting the number of arguments, then the string'array[3]'
I always brace my variables.
While I also use ZSH, I write most of my scripts in bash because they more often than not need to run on a CI/CD server.
- In Zsh or Fish, the quotes are unnecessary: