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#!/usr/bin/env bash
source $(dirname ${BASH_SOURCE[0]})/nix-utils.sh
usage() {
cat <<EOS
$(help_synopsis "${BASH_SOURCE[0]}" "[-s | -u] [-h]")
-s Show system generation
-u Show user generation (default)
-h Show this help and exit
Show the number of the current generations. Defaults to user
profile, but system profile can be checked as well.
Example usage:
# To show the system generation which is current.
# With verbosity on.
nix-script -v show-generations -s
$(help_end)
EOS
}
SYSTEM=0
USER=1
while getopts "suh" OPTION
do
case $OPTION in
s)
SYSTEM=1
USER=0
stdout "Showing system generation"
;;
u)
SYSTEM=0
USER=1
stdout "Showing user generation"
;;
h)
stdout "Showing usage"
usage
exit 0
;;
esac
done
([[ $SYSTEM -eq 1 ]] && current_system_generation) || current_user_generation
stdout "Ready"
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