g
g
Glob pattern matching for file system objects (eg
*.txt)
Description
Returns a list of files and directories that match a glob pattern.
Output is a JSON list.
Usage
g: pattern -> <stdout>
[ <stdin> -> ] @g command pattern [ -> <stdout> ]
!g: pattern -> <stdout>
<stdin> -> g: pattern -> <stdout>
<stdin> -> !g: pattern -> <stdout>
Examples
Inline globbing:
cat: @{ g: *.txt }
Writing a JSON array of files to disk:
g: *.txt |> filelist.json
Writing a list of files to disk:
g: *.txt -> format str |> filelist.txt
Checking if a file exists:
if { g: somefile.txt } then {
# file exists
}
Checking if a file does not exist:
!if { g: somefile.txt } then {
# file does not exist
}
Return all files apart from text files:
!g: *.txt
Filtering a file list based on glob matches:
f: +f -> g: *.md
Remove any glob matches from a file list:
f: +f -> !g: *.md
Detail
Pattern Reference
*matches any number of (including zero) characters?matches any single character
Inverse Matches
If you want to exclude any matches based on wildcards, rather than include them, then you can use the bang prefix. eg
» g: READ*
[
"README.md"
]
» !g: *
Error in `!g` (1,1): No data returned.
When Used As A Method
!g first looks for files that match its pattern, then it reads the file list from STDIN. If STDIN contains contents that are not files then !g might not handle those list items correctly. This shouldn't be an issue with frx in its normal mode because it is only looking for matches however when used as !g any items that are not files will leak through.
This is its designed feature and not a bug. If you wish to remove anything that also isn't a file then you should first pipe into either g: *, rx: .*, or f +f and then pipe that into !g.
The reason for this behavior is to separate this from !regexp and !match.
Synonyms
g!g