Issue
Can someone help me convert this bash function to fish? It would also be nice if you could explain what these do like "${@%%.app}”
, 's/ /.*/g’
, "$@\”
etc.
bid() {
local shortname location
# combine all args as regex
# (and remove ".app" from the end if it exists due to autocomplete)
shortname=$(echo "${@%%.app}"|sed 's/ /.*/g')
# if the file is a full match in apps folder, roll with it
if [ -d "/Applications/$shortname.app" ]; then
location="/Applications/$shortname.app"
else # otherwise, start searching
location=$(mdfind -onlyin /Applications -onlyin ~/Applications -onlyin /Developer/Applications 'kMDItemKind==Application'|awk -F '/' -v re="$shortname" 'tolower($NF) ~ re {print $0}'|head -n1)
fi
# No results? Die.
[[ -z $location || $location = "" ]] && echo "$1 not found, I quit" && return
# Otherwise, find the bundleid using spotlight metadata
bundleid=$(mdls -name kMDItemCFBundleIdentifier -r "$location")
# return the result or an error message
[[ -z $bundleid || $bundleid = "" ]] && echo "Error getting bundle ID for \"$@\"" || echo "$location: $bundleid”
}
Thanks very much in advance.
Solution
Some notes on the differences:
- setting variables
- bash:
var=value
- fish:
set var value
- bash:
- functions
- bash
funcName() { ... }
- fish
function funcName ... end
- bash
- function arguments
- bash:
"$@"
,"$1"
,"$2"
, ... - fish:
$argv
,$argv[1]
,$argv[2]
, ...
- bash:
- function local variables
- bash:
local var
- fish:
set -l var
- bash:
- conditionals I
- bash:
[[ ... ]]
andtest ...
and[ ... ]
- fish:
test ...
and[ ... ]
, no[[ ... ]]
- bash:
- conditionals II
- bash:
if cond; then cmds; fi
- fish:
if cond; cmds; end
- bash:
- conditionals III
- bash:
cmd1 && cmd2
- fish:
cmd1; and cmd2
- fish (as of fish 3.0):
cmd1 && cmd2
- bash:
- command substitution
- bash:
output=$(pipeline)
- fish:
set output (pipeline)
- bash:
- process substitution
- bash:
join <(sort file1) <(sort file2)
- fish:
join (sort file1 | psub) (sort file2 | psub)
- bash:
Documentation
- bash: https://www.gnu.org/software/bash/manual/bashref.html
- fish: http://fishshell.com/docs/current/index.html and https://fishshell.com/docs/current/fish_for_bash_users.html
Answered By - glenn jackman Answer Checked By - David Goodson (WPSolving Volunteer)