Launch google chrome (canary) without web security, using custom profile. This example is missing the (optional) piping of output to /dev/null

.bashrc

# Append to .bashrc, .bash_profile or other similar
# Open google chrome canary without web security, and with devtools defaulting to open, using dev profile
function chromex() {
    local chrome_canary="/Applications/Google Chrome Canary.app/Contents/MacOS/Google Chrome Canary"
    # chrome://version/
    local user_data_dir="$HOME/Library/Application Support/Google/Chrome Canary"
    # Each profile is a subdirectory (often Default) within the user data directory.
    local profile_path="Profile 1"

    "$chrome_canary" --args --disable-web-security --user-data-dir="$user_data_dir" --profile-directory="$profile_path" --auto-open-devtools-for-tabs "$*"
}