Concisely starting Mac OS apps from the command line

Solution 1:

Finally I got it: Add this to your .bash_profile

function foomagick() {
    rm -f ~/.foomagick.tmp
    ls /Applications/ | grep "\.app" | grep -v iWork | while read APP; do
        # clean it up                                                           
        a=`echo $APP | sed s/\ //g`;
        a=`echo $a | sed s/\'//g`;
        echo alias ${a%.*}="'open -a \"${APP%.*}\"'" >> ~/.foomagick.tmp
    done
    source ~/.foomagick.tmp
    rm ~/.foomagick.tmp  
}
foomagick()

Now the following work:

Skim # open Skim.app
Skim foo.pdf
FireFox http://google.com
FireFox google.com # ERROR. Looks for local file.

Edit by Reid:

I implemented the above as a Python script that makes wrapper scripts instead of aliases. You will need to put ~/bin/mankoffmagic in your path. If you want the wrappers to be updated automatically, run it regularly from cron or somesuch.

#!/usr/bin/python
#
# This script automagically updates a set of wrapper shell scripts in
# ~/bin/mankoffmagic which call Mac apps installed in /Applications.
#
# Inspired by mankoff's shell alias posted on apple.stackexchange.com; see:
# http://apple.stackexchange.com/questions/4240/concisely-starting-mac-os-apps-from-the-command-line/4257#4257
#
# Notes/Bugs:
#
# 1. Does not follow symlinks (aliases?)
#
# 2. Assumes that application names do not contain double-quotes.
#
# 3. Not very smart about finding the actual binary (it guesses). This is
# wrong sometimes, e.g. Firefox. Probably a deeper understanding of the app
# package structure would fix this.

import copy
import glob
import os
import os.path
import re

BINDIR = os.path.expandvars("$HOME/bin/mankoffmagic")
APP_RE = re.compile(r'(.*)\.app$')
STRIP_RE = re.compile(r'[\W_]+')

def main():
   # We aggressively delete everything already in BINDIR, to save the trouble
   # of analyzing what should stay
   for f in glob.glob("%s/*" % BINDIR):
      os.unlink(f)

   # Walk /Applications and create a wrapper shell script for each .app dir
   for (root, dirs, files) in os.walk("/Applications"):
      dirs_real = copy.copy(dirs)  # so we can manipulate dirs while looping
      for d in dirs_real:
         #print "checking %s" % os.path.join(root, d)
         m = APP_RE.search(d)
         if (m is not None):
            #print "Found " + m.group()
            dirs.remove(d)  # no need to recurse into app
            create_script(root, d, m.group(1))

def create_script(path, appdir, appname):
   # remove non-alphanumerics and downcase it
   wrapper = STRIP_RE.sub('', appname).lower()
   wrapper = os.path.join(BINDIR, wrapper)
   fp = open(wrapper, "w")
   # Twiddle the comments in the script depending on whether you want to
   # invoke the binary or use "open" -- the former lets you use any
   # command-line args, while the latter is more Mac-like (app puts itself in
   # the front, etc.)
   fp.write("""
#!/bin/sh
exec "%s/%s/Contents/MacOS/%s" "$@"
#open -a "%s" "$@"
""" % (path, appdir, appname, appname))
   fp.close()
   os.chmod(wrapper, 0700)


if (__name__ == "__main__"):
   main()

Solution 2:

You don't need anything fancy, you already have the answer. Try:

open /Applications/Foo.app bar.pdf

on edit

In light of the comments below, I think my answer would still be relatively similar... I would make a function that overrides open, does a pushd to /Applications, calls /usr/bin/open $appName.app $args, does a popd and returns.

I suck at shell scripting but something like below which covers special cases and keeps you using pretty much the same syntax as apple provided for open. I like to keep my environment as clean as possible.

I'm sure the syntax is from outer space:

function open($appName, $args)
{
    #if we are calling open without a path like /Applications/TextEdit.app AND
    #    $appName ends in '.app'
    if (!hasParent($appName) && isApp($appName))
    {
        pushd /Applications
        /usr/bin/open ${appName}.app $args &
        popd
        return
    }
    #otherwise, use open as normal
    /usr/bin/open $appName $args
    return
}

on second edit

looking @mankoff's comment on the original question, most of the stuff in the above function would probably be a waste of time since you could just use open -a $appName. So mankoff probably has the easiest solution and should change his comment to an answer ;)