Linux изменить пароль chpasswd
# Chpasswd command is very simple to use
[ root@myhost ~ ] # echo "tom:1234" | chpasswd
# Using the passwd command, you can also change the password in a batch like mode
[ root@myhost ~ ] # echo "1234" | passwd --stdin "tom"
Changing password for user tom.
passwd: All authentication tokens Updated successfully.
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