Script to download & install XCode Command Line tools on OSX 10.7 or 10.8. Lifted from jedi4ever/veewee template.

xcode-cli-tools.sh

#!/bin/sh
# 2021-12-09:
#   This script is no longer supported!
#   Apple broke all direct downloads without logging with an Apple ID first.
#   The number of hoops that a script would need to jump through to login,
#   store cookies, and download is prohibitive.
#   Now we all must manually download and mirror the files for this to work at all :'-(

OSX_VERS=$(sw_vers -productVersion | awk -F "." '{print $2}')

# Get Xcode CLI tools
# https://devimages.apple.com.edgekey.net/downloads/xcode/simulators/index-3905972D-B609-49CE-8D06-51ADC78E07BC.dvtdownloadableindex
# https://developer.apple.com/downloads/index.action
TOOLS=clitools.dmg
if [ ! -f "$TOOLS" ]; then
  if [ "$OSX_VERS" -eq 7 ]; then
	  DMGURL=http://devimages.apple.com/downloads/xcode/command_line_tools_for_xcode_os_x_lion_april_2013.dmg
  elif [ "$OSX_VERS" -eq 8 ]; then
  	  DMGURL=http://devimages.apple.com/downloads/xcode/command_line_tools_for_xcode_os_x_mountain_lion_april_2013.dmg
  elif [ "$OSX_VERS" -eq 9 ]; then
	  DMGURL=http://adcdownload.apple.com/Developer_Tools/command_line_tools_os_x_mavericks_for_xcode__late_october_2013/command_line_tools_os_x_mavericks_for_xcode__late_october_2013.dmg
  elif [ "$OSX_VERS" -eq 10 ]; then
	  DMGURL=http://adcdownload.apple.com/Developer_Tools/Command_Line_Tools_OS_X_10.10_for_Xcode_6.3.2/commandlinetoolsosx10.10forxcode6.3.2.dmg
  elif [ "$OSX_VERS" -eq 11 ]; then
	  DMGURL=http://adcdownload.apple.com/Developer_Tools/Command_Line_Tools_OS_X_10.11_for_Xcode_7.3.1/Command_Line_Tools_OS_X_10.11_for_Xcode_7.3.1.dmg
  elif [ "$OSX_VERS" -eq 12 ]; then
	  DMGURL=http://adcdownload.apple.com/Developer_Tools/Command_Line_Tools_macOS_10.12_for_Xcode_8.1/Command_Line_Tools_macOS_10.12_for_Xcode_8.1.dmg
  elif [ "$OSX_VERS" -eq 14 ]; then
	  DMGURL=https://download.developer.apple.com/Developer_Tools/Command_Line_Tools_for_Xcode_11_GM_Seed/Command_Line_Tools_for_Xcode_11_GM_Seed.dmg
  fi
  curl "$DMGURL" -o "$TOOLS"
fi
TMPMOUNT=`/usr/bin/mktemp -d /tmp/clitools.XXXX`
hdiutil attach "$TOOLS" -mountpoint "$TMPMOUNT"
installer -pkg "$(find $TMPMOUNT -name '*.mpkg' -o -name '*.pkg')" -target /
hdiutil detach "$TMPMOUNT"
rm -rf "$TMPMOUNT"
rm "$TOOLS"
exit

@xbeta @TheTechRobo

Apple broke script access to all adcdownload.apple.com and download.developer.apple.com URLs. They now respond with an HTML page and force sign in with an Apple ID which is rather prohibitive to do in an unattended way.

<title>Unauthorized - Apple Developer</title>
        <meta name="omni_page" content="Unauthorized" />
        <meta name="Description" content="The page you requested does not exist.">
[...SNIP...]
<main class="main" data-page-type="overview" id="main" role="main">
                <h1 class="section-headline typography-headline">Sorry, you cannot view this page.</h1>
                <p class="intro">The Apple ID you signed in with does not have permission to view this page.</p>
                <p>If you’re currently a member of the Apple Developer Program, you or your <span class="nowrap">Account Holder</span> may need to update your account by agreeing to the latest license agreement in order to access this page. To view your current membership status and benefits, <a href="/account/?view=membership#/welcome">visit your account</a>.</p>
        </main>

I'm looking for alternatives, but have yet to find any that don't already depend on Xcode and CLT packages... which defeats the purpose of an automated script. Anyone who manages Apple CI / CD build nodes is probably stuck in the same chicken-egg problem with installing Xcode + Command Line Tools now. 😞
Are we stuck with doing this manually now? 🤷

Might work if you pass in a cookies.txt file to curl ... the -b cookies.txt option should do it.

Just make sure you export it in the old Netscape format. Lots of FF and Chrome extensions to do this.

You can just login with an apple id and export the cookies.txt then pass it in.

Not pretty but it would probably work.

Unforutnately I can't test - I moved away from mac completely recently.

@TheTechRobo yeah that would probably work. However, it defeats the original purpose of this script: unattended automated Xcode installations.

This type of broken download URL problem is why Homebrew doesn't accept certain apps. It's too much of a nightmare to keep things working when URLs break, move behind paywall or login, redirect to unverified third-party domain, etc...

Would be better than nothing tho, especially sinc eyou can use the same cookies file for many machines

So, I figured out another way around having to maintain URLs for the CLT packages... I ended up deprecating this script and using an AppleScript instead