syncbe.sh - sync users, groups, and files from one root to another

syncbe.sh

#!/bin/sh
set -e

sync_users()
{
    pw usershow -n root | cut -f 2 -d ':' | pw -R ${root} usermod -n root -H 0

    for u in $(cat ${config}/users); do
	if pw -R ${root} usershow -n ${u} > /dev/null 2>&1; then
	    pw -R ${root} userdel -n ${u}
	fi
	pw usershow -n ${u} >> ${root}/etc/master.passwd
    done

    pwd_mkdb -p -d ${root}/etc ${root}/etc/master.passwd
}

sync_groups()
{
    for g in $(cat ${config}/groups); do
	if ! pw -R ${root} groupshow -n ${g} > /dev/null 2>&1; then
	    gid=$(pw groupshow -n ${g} | sed -E 's/^.*:.*:([[:digit:]]+):*/\1/')
	    pw -R ${root} groupadd -n ${g} -g ${gid}
	fi
	
	users=$(pw groupshow -n ${g} | sed 's/.*://')
	pw -R ${root} groupmod -n ${g} -m ${users}
    done
}

sync_keepfiles()
{
    for f in $(cat ${config}/keepfiles); do
	if [ -f ${f} ]; then cp ${f} ${root}${f}; fi
    done    
}

main() {
    local root=$(dirname $(realpath $0))
    local config=${root}/config
    
    sync_users
    sync_groups
    sync_keepfiles
}

main