# cat /etc/login.defs # *REQUIRED* # Directory where mailboxes reside, _or_ name of file, relative to the # home directory. If you _do_ define both, MAIL_DIR takes precedence. # QMAIL_DIR is for Qmail # #QMAIL_DIR Maildir MAIL_DIR /var/spool/mail #MAIL_FILE .mail # Password aging controls: # # PASS_MAX_DAYS Maximum number of days a password may be used. # PASS_MIN_DAYS Minimum number of days allowed between password changes. # PASS_MIN_LEN Minimum acceptable password length. # PASS_WARN_AGE Number of days warning given before a password expires. # PASS_MAX_DAYS 99999 PASS_MIN_DAYS 0 PASS_MIN_LEN 5 PASS_WARN_AGE 7 # # Min/max values for automatic uid selection in useradd # UID_MIN 500 UID_MAX 60000 # # Min/max values for automatic gid selection in groupadd # GID_MIN 500 GID_MAX 60000 # # If defined, this command is run when removing a user. # It should remove any at/cron/print jobs etc. owned by # the user to be removed (passed as the first argument). # #USERDEL_CMD /usr/sbin/userdel_local # # If useradd should create home directories for users by default # On RH systems, we do. This option is overridden with the -m flag on # useradd command line. # CREATE_HOME yes # The permission mask is initialized to this value. If not specified, # the permission mask will be initialized to 022. UMASK 077 # This enables userdel to remove user groups if no members exist. # USERGROUPS_ENAB yes # Use MD5 or DES to encrypt password? Red Hat use MD5 by default. MD5_CRYPT_ENAB yes ENCRYPT_METHOD MD5
# cat userfile.txt www00:x:520:520::/home/www00:/sbin/nologin www01:x:521:521::/home/www01:/sbin/nologin www02:x:522:522::/home/www02:/sbin/nologin www03:x:523:523::/home/www03:/sbin/nologin www04:x:524:524::/home/www04:/sbin/nologin www05:x:525:525::/home/www05:/sbin/nologin www06:x:526:526::/home/www06:/sbin/nologin www07:x:527:527::/home/www07:/sbin/nologin www08:x:528:528::/home/www08:/sbin/nologin www09:x:529:529::/home/www09:/sbin/nologin # newusers userfile.txt
echo "user:password" | chpasswd
[root@dev1 ~]# adduser test [root@dev1 ~]# echo "test:123456" | chpasswd
# cat passwd.txt neo:neopass jam:jampass # cat passwd.txt | chpasswd
# chpasswd -c < passwd.txt
passwd 命令實現相同功能
echo "mypasword" | passwd –stdin neo
sudo apt install -y sshpass root@ubuntu:~# sshpass -v Usage: sshpass [-f|-d|-p|-e] [-hV] command parameters -f filename Take password to use from file -d number Use number as file descriptor for getting password -p password Provide password as argument (security unwise) -e Password is passed as env-var "SSHPASS" With no parameters - password will be taken from stdin -P prompt Which string should sshpass search for to detect a password prompt -v Be verbose about what you're doing -h Show help (this screen) -V Print version information At most one of -f, -d, -p or -e should be used
sshpass -p Password scp target/*.jar root@dev.netkiller.cn:/root/
sshpass -p Password ssh root@dev.netkiller.cn java -jar /root/java-0.0.1-SNAPSHOT.jar