Telemetry can be disabled by setting
toolkit.telemetry.enabled to false.
Rationale
The Telemetry feature provides this capability by sending performance and usage info to Mozilla. As you use Firefox, Telemetry measures and collects non-personal information, such as performance, hardware, usage and customizations. It then sends this information to Mozilla on a daily basis and we use it to improve Firefox
firefox_cfg="policies.json"
# Default to /etc/firefox/policies to use for remediations.
firefox_dirs="/etc/firefox/policies"
permissions=644
declare __REMEDIATE_PYTHON
if [ -x /usr/bin/python ]; then
__REMEDIATE_PYTHON=/usr/bin/python
elif [ -x /usr/bin/python3 ]; then
__REMEDIATE_PYTHON=/usr/bin/python3
elif [ -x /usr/bin/python2 ]; then
__REMEDIATE_PYTHON=/usr/bin/python2
else
echo "Python required and no python interpreter found."
exit 1
fi
declare __FIREFOX_DISTRIBUTION
if find /usr -iname firefox\* -type f -print | grep -qe "firefox.sh$\|firefox-bin$"; then
__FIREFOX_DISTRIBUTION=$(dirname "$(find /usr -iname firefox\* -type f -print | grep -e "firefox.sh$\|firefox-bin$" | head -n1)")/distribution
fi
# If there's a policies file in the distribution directory already, modify it.
if [ -f ${__FIREFOX_DISTRIBUTION}/policies.json ]; then
firefox_dirs="${__FIREFOX_DISTRIBUTION}"
fi
# Check the possible Firefox install directories
for firefox_dir in ${firefox_dirs}; do
if ! [ -d "${firefox_dir}" ]; then
mkdir -p "${firefox_dir}"
chmod 755 "${firefox_dir}"
fi
# Make sure the Firefox .cfg file exists and has the appropriate permissions
if ! [ -f "${firefox_dir}/${firefox_cfg}" ] ; then
echo "{" > "${firefox_dir}/${firefox_cfg}"
echo " \"policies\": {" >> "${firefox_dir}/${firefox_cfg}"
echo " }" >> "${firefox_dir}/${firefox_cfg}"
echo "}" >> "${firefox_dir}/${firefox_cfg}"
chmod ${permissions} "${firefox_dir}/${firefox_cfg}"
fi
# If the key exists, change it. Otherwise, add it to the config_file.
if [ -x ${__REMEDIATE_PYTHON} ]; then
echo """
import json
_file=open('${firefox_dir}/${firefox_cfg}', 'r')
_tree=json.load(_file)
_file.close()
_tree['policies']['DisableTelemetry'] = True
_file=open('${firefox_dir}/${firefox_cfg}', 'w')
json.dump(_tree, _file, indent=4, sort_keys=True)
_file.close()
""" | ${__REMEDIATE_PYTHON}
chmod ${permissions} "${firefox_dir}/${firefox_cfg}"
fi
done