awesome-osx-command-line/functions.md

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# Functions

> An assorted collection of useful OS X specific Bash-style functions. Part of [Awesome OS X Command Line](https://github.com/herrbischoff/awesome-osx-command-line).

## Table of Contents

- [Developer](#developer)
    - [App Icons](#app-icons)
        - [Create App Icon](#create-app-icon)
    - [Helper Functions](#helper-functions)
        - [Ask User for Password](#ask-user-for-password)

- [Finder](#finder)
    - [Get Path of Frontmost Finder Window](#get-path-of-frontmost-finder-window)
    - [Print Files Selected in Finder](#print-files-selected-in-finder)
    - [Set Current Directory's Finder View to Column View](#set-current-directorys-finder-view-to-column-view)
    - [Set Current Directory's Finder View to Icon View](#set-current-directorys-finder-view-to-icon-view)
    - [Set Current Directory's Finder View to List View](#set-current-directorys-finder-view-to-list-view)


## Developer

### App Icons

#### Create App Icon

Function to quickly create an application icon from 1024px master file.

```bash
function mkicns() {
    if [[ -z "$@" ]]; then
        echo "Input file missing"
    else
        filename=${1%.*}
        mkdir $filename.iconset
        sips -z 16 16   $1 --out $filename.iconset/icon_16x16.png
        sips -z 32 32   $1 --out $filename.iconset/icon_16x16@2x.png
        sips -z 32 32   $1 --out $filename.iconset/icon_32x32.png
        sips -z 64 64   $1 --out $filename.iconset/icon_32x32@2x.png
        sips -z 128 128 $1 --out $filename.iconset/icon_128x128.png
        sips -z 256 256 $1 --out $filename.iconset/icon_128x128@2x.png
        sips -z 256 256 $1 --out $filename.iconset/icon_256x256.png
        sips -z 512 512 $1 --out $filename.iconset/icon_256x256@2x.png
        sips -z 512 512 $1 --out $filename.iconset/icon_512x512.png
        cp $1 $filename.iconset/icon_512x512@2x.png
        iconutil -c icns $filename.iconset
        rm -r $filename.iconset
    fi
}
```

### Helper Functions

#### Ask User for Password

This function will use AppleScript to present a password entry dialog to make
your scripts a little more user friendly.

```bash
function gui_password {
    if [[ -z $1 ]]; then
        gui_prompt="Password:"
    else
        gui_prompt="$1"
    fi
    PW=$(osascript <<EOF
    tell application "System Events"
        activate
        text returned of (display dialog "${gui_prompt}" default answer "" with hidden answer)
    end tell
EOF
    )

    echo -n "${PW}"
}

```

## Finder

### Get Path of Frontmost Finder Window

```bash
function finder_path {
    osascript -e 'tell application "Finder"'\
        -e "if (${1-1} <= (count Finder windows)) then"\
        -e "get POSIX path of (target of window ${1-1} as alias)"\
        -e 'else' \
        -e 'get POSIX path of (desktop as alias)'\
        -e 'end if' \
        -e 'end tell';
}
```

 ### Print Files Selected in Finder

 ```bash
 selected() {
     osascript <<EOT
         tell application "Finder"
             set theFiles to selection
             set theList to ""
             repeat with aFile in theFiles
                 set theList to theList & POSIX path of (aFile as alias) & "\n"
             end repeat
             theList
         end tell
 EOT
 }
 ```

### Set Current Directory's Finder View to Column View

```bash
function column_view {
    osascript -e 'set cwd to do shell script "pwd"'\
      -e 'tell application "Finder"'\
      -e "if (${1-1} <= (count Finder windows)) then"\
      -e "set the target of window ${1-1} to (POSIX file cwd) as string"\
      -e "set the current view of the front Finder window to column view"\
      -e 'else' -e "open (POSIX file cwd) as string"\
      -e "set the current view of the front Finder window to column view"\
      -e 'end if' -e 'end tell';
}
```

### Set Current Directory's Finder View to Icon View

```bash
function icon_view {
    osascript -e 'set cwd to do shell script "pwd"'\
      -e 'tell application "Finder"'\
      -e "if (${1-1} <= (count Finder windows)) then"\
      -e "set the target of window ${1-1} to (POSIX file cwd) as string"\
      -e "set the current view of the front Finder window to icon view"\
      -e 'else' -e "open (POSIX file cwd) as string"\
      -e "set the current view of the front Finder window to icon view"\
      -e 'end if' -e 'end tell';
};
```

### Set Current Directory's Finder View to List View

```bash
function list_view {
  osascript -e 'set cwd to do shell script "pwd"'\
    -e 'tell application "Finder"'\
    -e "if (${1-1} <= (count Finder windows)) then"\
    -e "set the target of window ${1-1} to (POSIX file cwd) as string"\
    -e "set the current view of the front Finder window to list view"\
    -e 'else' -e "open (POSIX file cwd) as string"\
    -e "set the current view of the front Finder window to list view"\
    -e 'end if' -e 'end tell';\
}
```

## License

<a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-sa/4.0/88x31.png" /></a><br />This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike 4.0 International License</a>.