iTerm3.sh

#!/bin/bash

CD_CMD="cd "\\\"$(pwd)\\\"" && clear"
if echo "$SHELL" | grep -E "/fish$" &> /dev/null; then
  CD_CMD="cd "\\\"$(pwd)\\\""; and clear"
fi
VERSION=$(sw_vers -productVersion)
OPEN_IN_TAB=0

while [ "$1" != "" ]; do
    PARAM="$1"
    VALUE="$2"
    case "$PARAM" in
        --open-in-tab)
            OPEN_IN_TAB=1
            ;;
    esac
    shift
done

if (( $(expr $VERSION '<' 10.7) )); then
    RUNNING=$(osascript<<END
    tell application "System Events"
        count(processes whose name is "iTerm")
    end tell
END
)
else
    RUNNING=1
fi

if (( ! $RUNNING )); then
    osascript<<END
    tell application "iTerm"
            tell current window
                tell current session of (create tab with default profile)
                    write text "$CD_CMD"
                end tell
            end tell
    end tell
END
else
    if (( $OPEN_IN_TAB )); then
        osascript &>/dev/null <<EOF
        tell application "iTerm"
                    if (count of windows) = 0 then
                        set theWindow to (create window with default profile)
                        set theSession to current session of theWindow
                    else
                        set theWindow to current window
                        tell current window
                            set theTab to create tab with default profile
                            set theSession to current session of theTab
                        end tell
                    end if
                    tell theSession
                        write text "$CD_CMD"
                    end tell
        end tell
EOF
    else
        osascript &>/dev/null <<EOF
        tell application "iTerm"
                    tell (create window with default profile)
                        tell the current session
                            write text "$CD_CMD"
                        end tell
                    end tell
        end tell
EOF
    fi
fi