0
I’m trying to create a shell script to add new users to the GNU/Linux system
But without entering native commands like adduser or useradd in the script, it would be something in the nail.
I have something almost fine(ready!), but I need to share ideas about what can be done.
If you’ve ever tried, or done anything like that, let me know.
2
Anyone running a GNU/Linux distro can already try it, or for those who don’t have it, use some Livecd or USB linux platform system.
#!/bin/sh
#
# Por - Diego Henrique "<[email protected]>"
#
# (c) 2016 Programa - Adicionar novos usuários na base do sistema GNU/Linux
#
ADD_UID=0; ADD_GID=0
for X in `cat /etc/passwd | cut -d ':' -f3`;
do
if [ $X > $ADD_UID ]; then
ADD_UID=$X
fi
done
ADD_UID=$(($ADD_UID + 1))
for Y in `cat /etc/group | cut -d ':' -f3`;
do
if [ $Y > $ADD_GID ]; then
ADD_GID=$Y
fi
done
ADD_GID=$(($ADD_GID + 1))
if [ $(id -u) != "0" ]
then
echo -ne "Se você é usuário de um sistema Linux, há arquivos que podem ser bloqueados a você.\nNo caso de arquivos e processos ligados ao funcionamento do sistema, seu proprietário natural é o usuário root. Isso significa que só ele é que pode alterá-los."
exit 0
elif [ -z $2 ]
then
echo "Use: $0 opções usuário"
exit 0
elif [ "$(cat /etc/passwd | grep -i $1 | wc -l)" = "1" ]
then
echo "Usuário '$1' e seu criador '$2' já existente. Tente outro novamente."
exit 0
fi
if [ $2 = "" ]
then
echo "Favor, coloque o seu nome verdadeiro para o usuário."
elif [ "$(cat /etc/passwd | grep -i $2 | wc -l)" = "2" ]
then
echo "Usuário '$2' já existente. Tente outro novamente."
exit 0
fi
echo "Inclusão de usuário '$1' em /etc/passwd"
echo "$1::$ADD_UID:$ADD_GID:$2:/home/$1:/bin/sh" >> /etc/passwd
sleep 1
echo "Inclusão de usuário '$1' em /etc/group"
echo "$1:x:$ADD_GID:$1" >> /etc/group
if [ ! -d "/home/$1" ]
then
echo "Inclusão de usuário '$1' em /home/$1"
mkdir /home/$1
else
echo "Falha na Inclusão de usuário '$1'. Verifique e tente manualmente."
exit 1
fi
# Alterar proprietário e grupo de arquivos - comandos chown e chgrp
chown -R $1 /home/$1
chgrp -R $1 /home/$1
sleep 1
echo "Pronto! Novo usuário criado com sucesso."
# ./script.sh dhg diego henrique guilherme
This little script takes two arguments followed by the user name to create, the "dhg" was used to illustrate the example, along with the true name of its creator "diego Henrique Guilherme" thus forming a new user on the penguin system.
Look how it turned out:
dhl::502:128:diego henrique guilherme:/home/dhl:/bin/sh
dhl:x:114:dhl
Important! - The content available here is so basic than complete. Therefore, it is up to anyone who wishes to make use of it to make appropriate adaptations in accordance with their particular wish.
Browser other questions tagged linux script shell permissions argument
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Hello Diego, try to describe better what you want to do, that’s why you’re getting the negatives. Another thing, do not need the pendant in the title, here just mark the question as answered.
– Intruso
@Intruder the "pending" was not he who entered :) The question was actually closed as pending, see the yellow box (or click edit and see the title field)
– user28595
@Diegohenrique [pending] is automatic system, I did not deny, but closed because I did not understand at first what exactly does not work and how it should work. Maybe you didn’t understand it yourself and so it was unclear, but I’ll try to read and test
– Guilherme Nascimento
@Diego Henrique, can edit your question and add what you have so far?
– David
I believe you will answer yes, by the way, improve the title, make it clear. ;)
– David
Now it’s clearer yes. ;)
– Intruso