#!/bin/bash -e

[[ $# == 1 ]] || { echo "Usage: $0 username"; exit; }

USERNAME=$1
SFTPGROUP=sftponly
SFTPROOT=/home/sftproot
SHELL=/bin/false

# 1. Create user with $USERNAME, $SFTPGROUP, and $SHELL
# 2. Create home directory with access only for $USERNAME
# 3. Set password for $USERNAME

useradd -b $SFTPROOT -g $SFTPGROUP -s $SHELL $USERNAME && \
	mkdir -m 700 $SFTPROOT/$USERNAME && \
	chown $USERNAME $SFTPROOT/$USERNAME && \
	passwd $USERNAME