docker 学习操作记录 3

记录3

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 Last login: Wed Dec   ::  from 192.168.114.1
 root@coder:~# man addgroup
 ADDUSER()                                                             System Manager's Manual                                                            ADDUSER(8)

 NAME
        adduser, addgroup - add a user or group to the system

 SYNOPSIS
        adduser  [options]  [--home  DIR] [--shell SHELL] [--no-create-home] [--uid ID] [--firstuid ID] [--lastuid ID] [--ingroup GROUP | --gid ID] [--disabled-pass‐
        word] [--disabled-login] [--gecos GECOS] [--add_extra_groups] [--encrypt-home] user

        adduser --system [options] [--home DIR] [--shell SHELL] [--no-create-home] [--uid ID] [--group | --ingroup GROUP | --gid  ID]  [--disabled-password]  [--dis‐
        abled-login] [--gecos GECOS] user

        addgroup [options] [--gid ID] group

        addgroup --system [options] [--gid ID] group

        adduser [options] user group

    COMMON OPTIONS
 ADDUSER()                                                             System Manager's Manual                                                            ADDUSER(8)

 NAME
        adduser, addgroup - add a user or group to the system

 SYNOPSIS
        adduser  [options]  [--home  DIR] [--shell SHELL] [--no-create-home] [--uid ID] [--firstuid ID] [--lastuid ID] [--ingroup GROUP | --gid ID] [--disabled-pass‐
        word] [--disabled-login] [--gecos GECOS] [--add_extra_groups] [--encrypt-home] user

        adduser --system [options] [--home DIR] [--shell SHELL] [--no-create-home] [--uid ID] [--group | --ingroup GROUP | --gid  ID]  [--disabled-password]  [--dis‐
        abled-login] [--gecos GECOS] user

        addgroup [options] [--gid ID] group

        addgroup --system [options] [--gid ID] group

        adduser [options] user group

    COMMON OPTIONS
 ADDUSER()                                                             System Manager's Manual                                                            ADDUSER(8)

 NAME
        adduser, addgroup - add a user or group to the system

 SYNOPSIS
        adduser  [options]  [--home  DIR] [--shell SHELL] [--no-create-home] [--uid ID] [--firstuid ID] [--lastuid ID] [--ingroup GROUP | --gid ID] [--disabled-pass‐
        word] [--disabled-login] [--gecos GECOS] [--add_extra_groups] [--encrypt-home] user

        adduser --system [options] [--home DIR] [--shell SHELL] [--no-create-home] [--uid ID] [--group | --ingroup GROUP | --gid  ID]  [--disabled-password]  [--dis‐
        abled-login] [--gecos GECOS] user

        addgroup [options] [--gid ID] group

        addgroup --system [options] [--gid ID] group

        adduser [options] user group

    COMMON OPTIONS
 root@coder:~# man addgroup
 ADDUSER()                                                             System Manager's Manual                                                            ADDUSER(8)

 NAME
        adduser, addgroup - add a user or group to the system

 SYNOPSIS
        adduser  [options]  [--home  DIR] [--shell SHELL] [--no-create-home] [--uid ID] [--firstuid ID] [--lastuid ID] [--ingroup GROUP | --gid ID] [--disabled-pass‐
        word] [--disabled-login] [--gecos GECOS] [--add_extra_groups] [--encrypt-home] user

        adduser --system [options] [--home DIR] [--shell SHELL] [--no-create-home] [--uid ID] [--group | --ingroup GROUP | --gid  ID]  [--disabled-password]  [--dis‐
        abled-login] [--gecos GECOS] user

        addgroup [options] [--gid ID] group

        addgroup --system [options] [--gid ID] group

        adduser [options] user group

    COMMON OPTIONS
        [--quiet] [--debug] [--force-badname] [--help|-h] [--version] [--conf FILE]

 DESCRIPTION
        adduser  and  addgroup  add  users  and  groups to the system according to command line options and configuration information in /etc/adduser.conf.  They are
        friendlier front ends to the low level tools like useradd, groupadd and usermod programs, by default choosing Debian policy conformant UID  and  GID  values,
        creating a home directory with skeletal configuration, running a custom script, and other features.  adduser and addgroup can be run in one of five modes:

    Add a normal user
        If called with one non-option argument and without the --system or --group options, adduser will add a normal user.

        adduser  will  choose  the first available UID from the range specified for normal users in the configuration file.  The UID can be overridden with the --uid
        option.

        The range specified in the configuration file may be overridden with the --firstuid and --lastuid options.

        By default, each user in Debian GNU/Linux is given a corresponding group with the same name.  Usergroups allow group writable directories to be easily  main‐
        tained  by placing the appropriate users in the new group, setting the set-group-ID bit in the directory, and ensuring that all users use a umask of .  If
        this option is turned off by setting USERGROUPS to no, all users' GIDs are set to USERS_GID.  Users' primary groups can also be overridden from  the  command
        line  with  the  --gid  or  --ingroup  options  to  set  the  group  by  id or name, respectively.  Also, users can be added to one or more groups defined in
        adduser.conf either by setting ADD_EXTRA_GROUPS to  in adduser.conf, or by passing --add_extra_groups on the commandline.

        adduser will create a home directory subject to DHOME, GROUPHOMES, and LETTERHOMES.  The home directory can be overridden from  the  command  line  with  the
        --home  option,  and  the  shell  with the --shell option. The home directory's set-group-ID bit is set if USERGROUPS is yes so that any files created in the
        user's home directory will have the correct group.

        adduser will copy files from SKEL into the home directory and prompt for finger (gecos) information and a password.  The gecos  may  also  be  set  with  the
        --gecos  option.   With the --disabled-login option, the account will be created but will be disabled until a password is set. The --disabled-password option
        will not set a password, but login is still possible (for example with SSH RSA keys).  To set up an encrypted home  directory  for  the  new  user,  add  the
        --encrypt-home option.  For more information, refer to the -b option of ecryptfs-setup-private().

        If  the  file /usr/local/sbin/adduser.local exists, it will be executed after the user account has been set up in order to do any local setup.  The arguments
        passed to adduser.local are:
        username uid gid home-directory
        The environment variable VERBOSE is set according to the following rule:

         if --quiet is specified

         if neither --quiet nor --debug is specified

         if --debug is specified

               (The same applies to the variable DEBUG, but DEBUG is deprecated and will be removed in a later version of adduser.)

    Add a system user
        If called with one non-option argument and the --system option, adduser will add a system user. If a user with the same name already exists in the system uid
        range  (or,  if  the  uid  is  specified, if a user with that uid already exists), adduser will exit with a warning. This warning can be suppressed by adding
        "--quiet".

        adduser will choose the first available UID from the range specified for system users in the configuration file (FIRST_SYSTEM_UID  and  LAST_SYSTEM_UID).  If
        you want to have a specific UID, you can specify it using the --uid option.

        By default, system users are placed in the nogroup group.  To place the new system user in an already existing group, use the --gid or --ingroup options.  To
        place the new system user in a new group with the same ID, use the --group option.

        A home directory is created by the same rules as for normal users.  The new system user will have the shell /bin/false (unless overridden  with  the  --shell
        option), and have logins disabled.  Skeletal configuration files are not copied.

         if --debug is specified

               (The same applies to the variable DEBUG, but DEBUG is deprecated and will be removed in a later version of adduser.)

    Add a system user
        If called with one non-option argument and the --system option, adduser will add a system user. If a user with the same name already exists in the system uid
        range  (or,  if  the  uid  is  specified, if a user with that uid already exists), adduser will exit with a warning. This warning can be suppressed by adding
        "--quiet".

        adduser will choose the first available UID from the range specified for system users in the configuration file (FIRST_SYSTEM_UID  and  LAST_SYSTEM_UID).  If
        you want to have a specific UID, you can specify it using the --uid option.

        By default, system users are placed in the nogroup group.  To place the new system user in an already existing group, use the --gid or --ingroup options.  To
        place the new system user in a new group with the same ID, use the --group option.

        A home directory is created by the same rules as for normal users.  The new system user will have the shell /bin/false (unless overridden  with  the  --shell
        option), and have logins disabled.  Skeletal configuration files are not copied.

         if --debug is specified

               (The same applies to the variable DEBUG, but DEBUG is deprecated and will be removed in a later version of adduser.)

    Add a system user
        If called with one non-option argument and the --system option, adduser will add a system user. If a user with the same name already exists in the system uid
        range  (or,  if  the  uid  is  specified, if a user with that uid already exists), adduser will exit with a warning. This warning can be suppressed by adding
        "--quiet".

        adduser will choose the first available UID from the range specified for system users in the configuration file (FIRST_SYSTEM_UID  and  LAST_SYSTEM_UID).  If
        you want to have a specific UID, you can specify it using the --uid option.

        By default, system users are placed in the nogroup group.  To place the new system user in an already existing group, use the --gid or --ingroup options.  To
        place the new system user in a new group with the same ID, use the --group option.

        A home directory is created by the same rules as for normal users.  The new system user will have the shell /bin/false (unless overridden  with  the  --shell
        option), and have logins disabled.  Skeletal configuration files are not copied.

 root@coder:~# man sha256sum
 SHA256SUM()                                                                User Commands                                                               SHA256SUM()

 NAME
        sha256sum - compute and check SHA256 message digest

 SYNOPSIS
        sha256sum [OPTION]... [FILE]...

 DESCRIPTION
        Print or check SHA256 (-bit) checksums.

        With no FILE, or when FILE is -, read standard input.

        -b, --binary
               read in binary mode

        -c, --check
               read SHA256 sums from the FILEs and check them

 root@coder:~# exit
 注销

 Connection closed by foreign host.

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