Migracion de Linux A Linux Base

mkdir /root/migracion

export UGIDLIMIT=500

##migrar /etc/passwd

awk -v LIMIT=$UGIDLIMIT -F: '($3>=LIMIT) && ($3!=65534)' /etc/passwd > /root/migracion/passwd.mig

##migrar /etc/group

awk -v LIMIT=$UGIDLIMIT -F: '($3>=LIMIT) && ($3!=65534)' /etc/group > /root/migracion/group.mig

##migrar /etc/shadow

awk -v LIMIT=$UGIDLIMIT -F: '($3>=LIMIT) && ($3!=65534) {print $1}' /etc/passwd | tee - |egrep -f - /etc/shadow > /root/migracion/shadow.mig

##migrar /etc/gshadow

cp /etc/gshadow /root/migracion/gshadow.mig



##backup home

tar -zcvpf /root/migracion/home.tar.gz /home


##Pasar

scp -r /root/migracion root@192.168.131.198:/root/



##IMPORTANDO

Bacapear usuario del sistema

mkdir /root/users.bk
cp /etc/passwd /etc/shadow /etc/group /etc/gshadow /root/users.bk


##Restaurar

cd /root/migracion
cat passwd.mig >> /etc/passwd
cat group.mig >> /etc/group
cat shadow.mig >> /etc/shadow
/bin/cp gshadow.mig /etc/gshadow


## Parado en el /

tar -zxvf /root/migracion/home.tar.gz


reboot