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Top Forums Shell Programming and Scripting Possible to use /usr/bin/watch to call a function? Post 302678861 by graysky on Monday 30th of July 2012 03:18:57 AM
Old 07-30-2012
Possible to use /usr/bin/watch to call a function?

I want to have a script both define functions and have the ability to run an external program calling one of them. This is the simplified construct:

Code:
#!/bin/bash
foo() {
  echo "this is foo"
}

bar() {
  echo "this is bar"
}

case "$1" in
  one)
    foo
    ;;
  two)
    export bar
    /usr/bin/watch bar
    ;;
  *)
    echo $0 "{one|two}"
    exit 0
    ;;
esac

So if I invoke /path/to/script one the foo function runs and it exits as expected. I want to ability to run the bar function as if it were a stand-alone program via `/usr/bin/watch bar` but this doesn't work as expected.

Code:
$ /path/to/script two
Every 2.0s: bar                                                                         Mon Jul 30 02:16:25 2012

sh: bar: command not found

How can I accomplish it?

---------- Post updated at 03:18 AM ---------- Previous update was at 02:16 AM ----------

Solved...
Code:
export -f bar

 

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Mojo::Path(3pm) 					User Contributed Perl Documentation					   Mojo::Path(3pm)

NAME
Mojo::Path - Path SYNOPSIS
use Mojo::Path; my $path = Mojo::Path->new('/foo%2Fbar%3B/baz.html'); shift @{$path->parts}; say $path; DESCRIPTION
Mojo::Path is a container for URL paths. ATTRIBUTES
Mojo::Path implements the following attributes. "leading_slash" my $leading_slash = $path->leading_slash; $path = $path->leading_slash(1); Path has a leading slash. "parts" my $parts = $path->parts; $path = $path->parts([qw(foo bar baz)]); The path parts. # Part with slash push @{$path->parts}, 'foo/bar'; "trailing_slash" my $trailing_slash = $path->trailing_slash; $path = $path->trailing_slash(1); Path has a trailing slash. METHODS
Mojo::Path inherits all methods from Mojo::Base and implements the following new ones. "new" my $path = Mojo::Path->new; my $path = Mojo::Path->new('/foo%2Fbar%3B/baz.html'); Construct a new Mojo::Path object. "canonicalize" $path = $path->canonicalize; Canonicalize path. # "/foo/baz" Mojo::Path->new('/foo/bar/../baz')->canonicalize; "clone" my $clone = $path->clone; Clone path. "contains" my $success = $path->contains('/foo'); Check if path contains given prefix. # True Mojo::Path->new('/foo/bar')->contains('/'); Mojo::Path->new('/foo/bar')->contains('/foo'); Mojo::Path->new('/foo/bar')->contains('/foo/bar'); # False Mojo::Path->new('/foo/bar')->contains('/f'); Mojo::Path->new('/foo/bar')->contains('/bar'); Mojo::Path->new('/foo/bar')->contains('/whatever'); "merge" $path = $path->merge('/foo/bar'); $path = $path->merge('foo/bar'); $path = $path->merge(Mojo::Path->new('foo/bar')); Merge paths. # "/baz/yada" Mojo::Path->new('/foo/bar')->merge('/baz/yada'); # "/foo/baz/yada" Mojo::Path->new('/foo/bar')->merge('baz/yada'); # "/foo/bar/baz/yada" Mojo::Path->new('/foo/bar/')->merge('baz/yada'); "parse" $path = $path->parse('/foo%2Fbar%3B/baz.html'); Parse path. Note that %2F will be treated as "/" for security reasons. "to_abs_string" my $string = $path->to_abs_string; Turn path into an absolute string. "to_string" my $string = $path->to_string; Turn path into a string. SEE ALSO
Mojolicious, Mojolicious::Guides, <http://mojolicio.us>. perl v5.14.2 2012-09-05 Mojo::Path(3pm)
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