- Userdel Command Options For Macbook Pro
- Userdel Command Options For Mac Windows 7
- Userdel Command Options For Mac Shortcut
- Userdel Command Options For Mac Download
On Unix-like operating systems, the userdel command deletes a useraccount and all associated files.
Userdel Command Options For Macbook Pro
This document covers the Linux version of userdel.
Description
OPTIONS The options which apply to the userdel command are: -f, -force This option forces the removal of the user account, even if the user is still logged in. It also forces userdel to remove the user's home directory and mail spool, even if another user uses the same home directory or if the mail spool is not owned by the specified user.
userdel is a low-level utility for removing users. (It is not very user-friendly. In most cases, administrators are advised to use the friendlier deluser utility instead.)
The userdel command modifies the system account files, deleting all entries that refer to the username LOGIN. The named user must exist.
Syntax
Options
- Next comes synopsis, which shows the command any any options, or flags, that you can use with it. For pwd, there are two options: -L and -P. These options are explained in the description section.
- Then, use the following command to convert the.ppk format private key to a standard PEM format private key: puttygen privatekey.ppk -O private-openssh -o privatekey.pem. Make sure permissions on the private key file are set properly. It should only be readable by the user that owns it. Chmod go-rw privatekey.pem. You can now use the key for logins from scripts and command line with: ssh -i privatekey.pem user@hostname Ported PuTTY for Mac. There is a port of PuTTY for Mac.
| -f, --force | This option forces the removal of the user account, even if the user is still logged in. It also forces userdel to remove the user's home directory and mail spool, even if another user uses the same home directory or if the mail spool is not owned by the specified user. If USERGROUPS_ENAB is defined to yes in /etc/login.defs and if a group exists with the same name as the deleted user, then this group will be removed, even if it is still the primary group of another user. Note: This option is dangerous and may leave your system in an inconsistent state. |
| -h, --help | Display a help message, and exit. |
| -r, --remove | Files in the user's home directory will be removed along with the home directory itself and the user's mail spool. Files located in other file systems will have to be searched for and deleted manually. The mail spool is defined by the MAIL_DIR variable in the login.defs file. |
| -RCHROOT_DIR, --rootCHROOT_DIR | Apply changes in the chroot directory CHROOT_DIR and use the configuration files from the same directory. |
| -Z, --selinux-user | Remove any SELinux (Security-Enhanced Linux) user mapping for the user's login. |
Configuration
The following configuration variables in /etc/login.defs change the behavior of this tool:
Userdel Command Options For Mac Windows 7
| Name | Type | Description |
|---|---|---|
| MAIL_DIR | string | The mail spool directory. This is needed to manipulate the mailbox when its corresponding user account is modified or deleted. If not specified, a compile-time default is used. |
| MAIL_FILE | string | Defines the location of the users mail spool files relatively to their home directory. |
| MAX_MEMBERS_PER_GROUP | number | Maximum members per group entry. When the maximum is reached, a new group entry (line) is started in /etc/group (with the same name, same password, and same Group ID). The default value is 0, meaning that there are no limits in the number of members in a group. This feature (split group) permits to limit the length of lines in the group file. This is useful to make sure that lines for NIS groups are not larger than 1024 characters. If you need to enforce such limit, you can use 25. Note: split groups may not be supported by all tools (including the Shadow toolsuite). You should not use this variable unless you really need it. |
| USERDEL_CMD | string | 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). The return code of the script is not taken into account. Here is an example script, which removes the user's cron, at and print jobs: |
| USERGROUPS_ENAB | boolean | If set to 'yes', userdel will remove the user's group if it contains no more members, and useradd will create by default a group with the name of the user. |
Note that the MAIL_DIR and MAIL_FILE variables are used by each of useradd, usermod, and userdel to create, move, or delete the user's mail spool.
Files
| /etc/group | Group account information. |
| /etc/login.defs | Shadow password suite configuration. |
| /etc/passwd | User account information. |
| /etc/shadow | Secure user account information. |
Exit Status
userdel will exit with one of the following exit codes, depending on what occurred:
| 0 | Success. |
| 1 | Couldn't update the passwd file. |
| 2 | Invalid command syntax. |
| 6 | Specified user doesn't exist. |
| 8 | Couldn't delete user because the specified user is currently logged in. |
| 10 | Couldn't update group file. |
| 12 | Couldn't remove home directory. |
Notes
userdel will not allow you to remove an account if there are running processes which belong to this account. In that case, you may have to kill those processes or lock the user's password or account and remove the account later. The -f option can force the deletion of this account.
You should manually check all file systems to ensure that no files remain owned by this user.
You may not remove any NIS attributes on a NIS client. This must be performed on the NIS server.
If USERGROUPS_ENAB is defined to 'yes' in /etc/login.defs, userdel will delete the group with the same name as the user. To avoid inconsistencies in the passwd and group databases, userdel will check that this group is not used as a primary group for another user, and will just warn without deleting the group otherwise. The -f option can force the deletion of this group.
Examples
Deletes the account of user username, and removes that user's home directory and associated mail files.
Related commands
useradd — Add a user to the system.
usermod — Modify a user's account.
Your MacBook keyboard puts efficiency at your fingertips. Startup keys, shortcut key combinations, and special function keys invite you to perform different tasks with a single touch — from turning up the sound volume to deleting selected text.
Finder Shortcuts for Your MacBook Keyboard
Keyboard shortcuts help you make quick, efficient use of the macOS Finder on your MacBook, providing all kinds of options for performing common tasks within Catalina.
| Key | Function |
| Command+A | Selects all items in the active window (icon view), all items in the column (column view), or all items in the list (list view and Cover Flow view) |
| Command+C | Copies the selected items |
| Command+D | Duplicates the selected item or items |
| Command+E | Ejects the selected volume |
| Command+F | Displays the Find controls in a new Finder window |
| Command+H | Hides All Finder windows |
| Command+I | Shows info for the selected item or items |
| Command+J | Shows the view options for the active window |
| Command+K | Displays the Connect to Server dialog |
| Command+L | Creates an alias for the selected item |
| Command+M | Minimizes the active window |
| Command+N | Opens a new Finder window |
| Command+O | Opens (or launches) the selected item |
| Command+R | Shows the original for the selected alias |
| Command+T | Opens a new Finder tab |
| Command+V | Pastes items from the Clipboard |
| Command+W | Closes the active window |
| Command+X | Cuts the selected items |
| Command+Z | Undoes the last action (if possible) |
| Command+, | Displays Finder Preferences dialog |
| Command+1 | Shows the active window in icon mode |
| Command+2 | Shows the active window in list mode |
| Command+3 | Shows the active window in column mode |
| Command+4 | Shows the active window in cover flow mode |
| Command+[ | Moves back to the previous Finder location |
| Command+] | Moves forward to the next Finder location |
| Command+Delete | Moves selected items to the Trash |
| Command+Up Arrow | Shows the enclosing folder |
| Command+` | Cycles through windows |
| Command+/ | Shows/Hides Status bar |
| Command+? | Displays macOS Help search box |
| Command+Shift+A | Goes to your Applications folder |
| Command+Shift+C | Goes to the top-level Computer location |
| Command+Shift+G | Goes to the specified folder |
| Command+Shift+H | Goes to your Home folder |
| Command+Shift+Q | Logs you out |
| Command+Shift+N | Creates a new untitled folder in the active window |
| Command+Shift+P | Shows/Hides Preview pane |
| Command+Shift+T | Shows/Hides Tab bar |
| Command+Shift+U | Goes to your Utilities folder |
| Command+Shift+Del | Deletes the contents of the Trash |
| Command+Option+H | Hides all windows (except Finder windows) |
| Command+Option+I | Opens the Inspector for the selected items |
| Command+Option+N | Creates a new smart folder |
| Command+Option+T | Shows/Hides the Finder window toolbar and sidebar |
| Command+Space | Displays the Spotlight search box |
| Control+Up Arrow | Displays the Mission Control screen |
| Control+Down Arrow | Shows all open windows for the current application using Mission Control |
| Command+F3 | Hides all windows to display the Desktop using Mission Control |
| Spacebar | Displays the contents of a file using Quick Look |
Standard MacBook Function Keys You Should Know
Some MacBook keys display symbols you may not have seen on a computer keyboard before. Here’s a handy reference for what those function keys can do for you on your Apple laptop.
Userdel Command Options For Mac Shortcut
Startup Keys: More Power to Your MacBook Keyboard
Userdel Command Options For Mac Download
Some keys and keyboard combinations on your MacBook were born for Startup magic — either to get your Apple laptop booted up, help troubleshoot computer problems, or perform other technical tricks within El Capitan.
| Key | Effect on Your Mac |
|---|---|
| C | Boots from the CD or DVD that’s loaded in your optical drive (if you have one) or a bootable USB flash drive |
| Media Eject | Ejects the CD or DVD in your optical drive (if you have one) |
| Option | Displays a system boot menu allowing you to choose the operating system and/or volume |
| Shift | Runs your MacBook in Safe Mode, preventing your Login Items from running; runs a directory check |
| T | Starts your laptop in FireWire or Thunderbolt Target Disk mode |
| Command+R | Boots from the El Capitan Recovery HD |
| Command+Option+R | Boots El Capitan Recovery using your Internet connection |
| Command+V | Show OS X Console messages |
| Command+S | Starts your MacBook in Single User Mode |
| Command+Option+P+R | Resets Parameter RAM (PRAM) |