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kernel check #189

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kernel check #189

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16 changes: 16 additions & 0 deletions iiab
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Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,7 @@ FLAGDIR=/etc/iiab/install-flags
APTPATH=/usr/bin # Avoids problematic /usr/local/bin/apt on Linux Mint
FAST=false # YOUR OWN RISK: Fewer security & user education prompts.
MFABT=false # No time to read the book? "Move Fast and Break Things:
MIN_RPI_KERN=1440
# How Facebook, Google, and Amazon Cornered Culture and Undermined Democracy"

if [[ $(id -un) != "root" ]]; then
Expand Down Expand Up @@ -105,6 +106,11 @@ iiab_var_value() {
[[ $v2 != "" ]] && echo $v2 || echo $v1 # [ "$v2" ] ALSO WORKS
}

# Subroutine compares software version numbers. Generates rare false positives
# like "1.0 > 1" and "2.4.0 > 2.4". Avoid risks by structuring conditionals w/
# a consistent # of decimal points e.g. "if version_gt w.x.y.z a.b.c.d; then"
version_gt() { [ "$(printf '%s\n' "$@" | sort -V | head -1)" != "$1" ]; }

# C. Ask for password change if pi/raspberry default remains
if check_user_pwd "pi" "raspberry"; then
echo -e "\n\n\e[41;1mRaspberry Pi's are COMPROMISED often if the default password is not changed!\e[0m\n"
Expand Down Expand Up @@ -255,6 +261,16 @@ if ! $($MFABT); then
fi
fi

CURR_KERN=`uname -v | awk '{print $1}' | sed -e s'/#//'`
if [ -f /etc/rpi-issue ] && version_gt $MIN_RPI_KERN $CURR_KERN; then
echo -e "Found Kernel ""$CURR_KERN"
echo -e "\nWARNING: Kernel ""$MIN_RPI_KERN"" or higher required with Raspbian."
echo -e "PLEASE RUN 'apt update','apt upgrade','reboot' then login and 'sudo iiab'"
echo -e "Hit [enter] to exit"
read ans < /dev/tty
exit 0
fi

####################### MAIN INTERACTIVE STUFF IS ABOVE #######################

# H. If microSD, lower reserve disk space from ~5% to 2%
Expand Down