{"id":353786,"date":"2024-09-11T13:51:17","date_gmt":"2024-09-11T13:51:17","guid":{"rendered":"https:\/\/www.ninjaone.com\/script-hub\/habilitar-cuentas-de-usuario\/"},"modified":"2024-10-13T19:08:11","modified_gmt":"2024-10-13T19:08:11","slug":"habilitar-cuentas-de-usuario","status":"publish","type":"script_hub","link":"https:\/\/www.ninjaone.com\/es\/script-hub\/habilitar-cuentas-de-usuario\/","title":{"rendered":"C\u00f3mo habilitar cuentas de usuario en Linux mediante un script Bash automatizado"},"content":{"rendered":"

La gesti\u00f3n eficaz de las cuentas de usuario es una tarea crucial para los profesionales de TI y los proveedores de servicios gestionados (MSP)<\/a>. Una parte importante de esto implica habilitar y deshabilitar cuentas de usuario seg\u00fan sea necesario. Este post tratar\u00e1 sobre un script Bash que simplifica el proceso de habilitar cuentas de usuario en sistemas Linux<\/strong>. Al comprender y utilizar este script, los profesionales de TI pueden agilizar la gesti\u00f3n de usuarios, mejorar la seguridad del sistema<\/a> y garantizar un funcionamiento sin problemas.<\/p>\n

Contexto<\/h2>\n

La gesti\u00f3n de cuentas de usuario en Linux es una responsabilidad fundamental para los administradores de sistemas. Garantizar que s\u00f3lo los usuarios autorizados tengan acceso a los recursos del sistema es vital para mantener la seguridad y la integridad operativa. Este script Bash est\u00e1 dise\u00f1ado para habilitar cuentas de usuario cambiando su shell de inicio de sesi\u00f3n a \/bin\/bash y desbloqueando la cuenta. Esta automatizaci\u00f3n puede ahorrar tiempo, reducir los errores humanos y aplicar pr\u00e1cticas de seguridad coherentes en varios sistemas.<\/p>\n

El script para habilitar cuentas de usuario en Linux<\/h2>\n
#!\/usr\/bin\/env bash\r\n\r\n# Description: Enables a user account by changing its shell to \/bin\/bash and unlocking the account.\r\n#\r\n# Release Notes: Initial Release\r\n# By using this script, you indicate your acceptance of the following legal terms as well as our Terms of Use at https:\/\/www.ninjaone.com\/terms-of-use.\r\n# Ownership Rights: NinjaOne owns and will continue to own all right, title, and interest in and to the script (including the copyright). NinjaOne is giving you a limited license to use the script in accordance with these legal terms. \r\n# Use Limitation: You may only use the script for your legitimate personal or internal business purposes, and you may not share the script with another party. \r\n# Republication Prohibition: Under no circumstances are you permitted to re-publish the script in any script library or website belonging to or under the control of any other software provider. \r\n# Warranty Disclaimer: The script is provided \u201cas is\u201d and \u201cas available\u201d, without warranty of any kind. NinjaOne makes no promise or guarantee that the script will be free from defects or that it will meet your specific needs or expectations. \r\n# Assumption of Risk: Your use of the script is at your own risk. You acknowledge that there are certain inherent risks in using the script, and you understand and assume each of those risks. \r\n# Waiver and Release: You will not hold NinjaOne responsible for any adverse or unintended consequences resulting from your use of the script, and you waive any legal or equitable rights or remedies you may have against NinjaOne relating to your use of the script. \r\n# EULA: If you are a NinjaOne customer, your use of the script is subject to the End User License Agreement applicable to you (EULA).\r\n#\r\n# Below are all the valid parameters for this script.\r\n#\r\n# Preset Parameter: \"ReplaceMeWithUsernameToEnable\"\r\n#   Username of the user you would like to enable.\r\n#\r\n\r\n# Help text function for when invalid input is encountered\r\nprint_help() {\r\n  printf '\\n### Below are all the valid parameters for this script. ###\\n'\r\n  printf '\\nPreset Parameter: \"ReplaceMeWithUsernameToEnable\" \\n'\r\n  printf '\\t%s\\n' \"Username of the user you would like to enable.\"\r\n}\r\n\r\n# Determines whether or not help text is nessessary and routes the output to stderr\r\ndie() {\r\n  local _ret=\"${2:-1}\"\r\n  echo \"$1\" >&2\r\n  test \"${_PRINT_HELP:-no}\" = yes && print_help >&2\r\n  exit \"${_ret}\"\r\n}\r\n\r\n_arg_userToEnable=\r\n\r\n# Grabbing the parameters and parsing through them.\r\nparse_commandline() {\r\n  while test $# -gt 0; do\r\n    _key=\"$1\"\r\n    case \"$_key\" in\r\n    --help | -h)\r\n      _PRINT_HELP=yes die 0\r\n      ;;\r\n    --*)\r\n      _PRINT_HELP=yes die \"FATAL ERROR: Got an unexpected argument '$1'\" 1\r\n      ;;\r\n    *)\r\n      if [[ -z $_arg_userToEnable ]]; then\r\n        _arg_userToEnable=$1\r\n      else\r\n        _PRINT_HELP=yes die \"FATAL ERROR: Got an unexpected argument '$1' but user '$_arg_userToEnable' was already specified!\" 1\r\n      fi\r\n      ;;\r\n    esac\r\n    shift\r\n  done\r\n}\r\n\r\n# Parse the command-line arguments passed to the script.\r\nparse_commandline \"$@\"\r\n\r\nif [[ -n $usernameToEnable ]]; then\r\n  _arg_userToEnable=\"$usernameToEnable\"\r\nfi\r\n\r\n# Check if the username to disable is empty and display an error if it is.\r\nif [[ -z $_arg_userToEnable ]]; then\r\n  _PRINT_HELP=yes die \"[Error] The username of the user you would like to disable is required!'\" 1\r\nfi\r\n\r\n# Validate the username to ensure it only contains lowercase letters, digits, hyphens, and underscores.\r\nif [[ ! $_arg_userToEnable =~ ^[a-z0-9_-]+$ ]]; then\r\n  _PRINT_HELP=no die \"[Error] Invalid characters detected in '$_arg_userToEnable' usernames can only have a-z, 0-9 or -, _ characters!\" 1\r\nfi\r\n\r\n# Search for the user in the \/etc\/passwd file.\r\npasswdEntry=$(grep -w \"$_arg_userToEnable\" \/etc\/passwd)\r\nif [[ -z $passwdEntry ]]; then\r\n  _PRINT_HELP=no die \"[Error] User '$_arg_userToEnable' does not exist.\" 1\r\nfi\r\n\r\n# Check to see if account is expired\r\naccountExpiration=$(chage -l \"$_arg_userToEnable\" | grep \"Account expires\" | grep -v 'never' | cut -d \":\" -f2 | xargs)\r\nif [[ -n $accountExpiration ]]; then\r\n  accountExpirationSeconds=$(date -d \"$accountExpiration\" +\"%s\")\r\n  \r\n  currentTime=$(date +\"%s\")\r\n  # Warn if account is expired\r\n  if [[ $accountExpirationSeconds -le $currentTime ]]; then\r\n    echo \"WARNING: The account for '$_arg_userToEnable' is currently expired as of '$accountExpiration'. You may need to set a new expiration date.\"\r\n  fi\r\nfi\r\n\r\nnoLogin=$(grep -w \"$_arg_userToEnable\" \/etc\/passwd | grep \"nologin\")\r\nunlockedaccount=$(passwd -S \"$_arg_userToEnable\" | cut -f2 -d \" \" | grep -v \"L\")\r\nif [[ -z $noLogin && -n $unlockedaccount ]]; then\r\n  _PRINT_HELP=no die \"[Error] User '$_arg_userToEnable' is already enabled.\" 1\r\nfi\r\n\r\nif [[ -f \/bin\/bash ]]; then\r\n  preferredShell=\"\/bin\/bash\"\r\nelif [[ -f \/bin\/sh ]]; then\r\n  preferredShell=\"\/bin\/sh\"\r\nfi\r\n\r\n# Attempt to change the shell of the user to \/bin\/bash to enable login capabilities.\r\nif ! usermod \"$_arg_userToEnable\" -s \"$preferredShell\"; then\r\n  _PRINT_HELP=no die \"[Error] Failed to change the shell for '$_arg_userToEnable' to '$preferredShell'.\" 1\r\nfi\r\n\r\n# Attempt to unlock the user account using usermod.\r\nif ! usermod -U \"$_arg_userToEnable\"; then\r\n  _PRINT_HELP=no die \"[Error] Failed to unlock '$_arg_userToEnable' using usermod.\" 1\r\nfi\r\n\r\n# Check if the user has been successfully enabled by confirming 'nologin' is no longer set.\r\nenabledUser=$(grep -w \"$_arg_userToEnable\" \/etc\/passwd | grep -v \"nologin\")\r\nif [[ -n $enabledUser ]]; then\r\n  echo \"Successfully enabled '$_arg_userToEnable'.\"\r\nelse\r\n  _PRINT_HELP=no die \"[Error] Failed to enable '$_arg_userToEnable'.\" 1\r\nfi<\/pre>\n
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<\/a><\/div><\/div>\n
An\u00e1lisis detallado<\/h2>\n
El script Bash proporcionado realiza su tarea a trav\u00e9s de varios pasos bien definidos. Desglosemos cada parte del script para habilitar cuentas de usuario para entender su funcionalidad:<\/p>\n
1. Texto de ayuda y funciones de gesti\u00f3n de errores<\/strong>:<\/p>\n