SFTP with user home jailed wihout "upload" directory

gistfile1.txt

step zero: maybe you should create groups to match users if not already created.

First we need to add users, and most users will ask you to create those users with certain uid, gid, etc, in this case my user ask me to import this file:
----cut here----
pt001:x:1101:1100:Some comment about this user pte:/dirhome/ptuserone:/bin/bash
pt002:x:1102:1100:Some comment about this user another user:/home/ptusertwo:/sbin/nologin
...
...
...
----cut here----
So we build this importer for these kind of user's proactivities

usage:
bash importer-etc-passwd-and-sftp-jail.sh user-generated-etc-passwd-file.txt

at the end, you just need to copy and paste some outputted text to /etc/ssh/sshd_config at the very end.
(do not forget to restart sshd server)

importer-etc-passwd-and-sftp-jail.sh

#!/bin/bash

function sshd_modify_match {
echo "1:$1"
echo "2:$2"
echo "3:$3"
echo "Match User $1
    ChrootDirectory $2
    ForceCommand internal-sftp
    AllowTcpForwarding no
    X11Forwarding no" | tee -a $3
}
function myuseradd {
	echo useradd -u $2 -g $3 -c "$4" -m "$5" -s "$6" $1
	stat ${home} || mkdir -p ${home}
	useradd -u $2 -g $3 -c "$4" -m -d "$5" -s "$6" $1
	grpname=$(groups "$1" | cut -d ":" -f2 | awk '{print $1}')
	chown root.root "$5"
	chmod 750 "$5"
	setfacl -m u:$1:rwX "$5"
	sshd_modify_match "$1" "$5" "$7"
}
TEMP=$(mktemp)
while read LINE; do
	user=$(echo ${LINE} | cut -d ":" -f1)
	 uid=$(echo ${LINE} | cut -d ":" -f3)
	 gid=$(echo ${LINE} | cut -d ":" -f4)
	 fng=$(echo ${LINE} | cut -d ":" -f5)
	home=$(echo ${LINE} | cut -d ":" -f6)
	 shl=$(echo ${LINE} | cut -d ":" -f7)
	#grep -e "${user}" /etc/passwd && echo "user already exists ${user}" || 
	myuseradd ${user} $uid $gid "${fng}" "${home}" $shl $TEMP
done < $1
echo "------cut here and paste into /etc/ssh/sshd_config----"
echo "Subsystem sftp internal-sftp"
cat $TEMP