Adding oracle user in linux
- Preface
- System Configuration
- Yum
- About Yum
- About ULN
- Yum Configuration
- Configuring Use of a Proxy Server
- Yum Repository Configuration
- Downloading the Oracle Linux Yum Server Repository Files
- Using Yum Utilities to Manage Configuration
- Overview of Oracle Ksplice
- Supported Kernels
- About Ksplice Updates
- Patching and Updating Your System
- About the Ksplice Enhanced Client
- About the Ksplice Uptrack Client
- About the Boot Process
- About the GRUB Boot Loader
- About the GRUB Configuration File
- Kernel Boot Parameters
- Displaying the Run Level
- Changing the Run Level
- Shutting down the System
- About Service Scripts
- About the Service Configuration GUI
- Starting and Stopping Services
- Configuring Services to Start at Different Run Levels
- About /etc/sysconfig Files
- About the /proc Virtual File System
- Virtual Files and Directories Under /proc
- Changing Kernel Parameters
- Parameters that Control System Performance
- Parameters that Control Kernel Panics
- Virtual Directories Under /sys
- About Kernel Modules
- Listing Information about Loaded Modules
- Loading and Unloading Modules
- About Module Parameters
- Specifying Modules to be Loaded at Boot Time
- About Device Files
- About the Udev Device Manager
- About Udev Rules
- Querying Udev and Sysfs
- Modifying Udev Rules
- About Automating Tasks
- Configuring cron Jobs
- Controlling Access to Running cron Jobs
- Changing the Behavior of Batch Jobs
- About sosreport
- Configuring and Using sosreport
- About Performance Problems
- Monitoring Usage of System Resources
- Monitoring CPU Usage
- Monitoring Memory Usage
- Monitoring Block I/O Usage
- Monitoring File System Usage
- Monitoring Network Usage
- Installing OSWbb
- Running OSWbb
- Analyzing OSWbb Archived Files
- About Kdump
- Configuring and Using Kdump
- Files Used by Kdump
- Using Kdump with OCFS2
- Using Kdump with a System Hang
- Installing the crash Packages
- Running crash
- Kernel Data Structure Analysis Commands
- System State Commands
- Helper Commands
- Session Control Commands
- Guidelines for Examining a Dump File
- About cgroups
- Subsystems
- blkio Parameters
- cpu Parameters
- cpuacct Parameters
- cpuset Parameters
- devices Parameters
- freezer Parameter
- memory Parameters
- net_cls Parameter
- Pinning Processes to CPU Cores
- Controlling CPU and Memory Usage
- Restricting Access to Devices
- Throttling I/O Bandwidth
- Network Configuration
- About Network Interfaces
- About Network Configuration Files
- About the /etc/hosts File
- About the /etc/nsswitch.conf File
- About the /etc/resolv.conf File
- About the /etc/sysconfig/network File
- Using ifenslave to Create Bonded Interfaces
- Using vconfig to Create VLAN Devices
- About the Dynamic Host Configuration Protocol
- Configuring a DHCP Server
- Configuring a DHCP Client
- About Network Address Translation
- About DNS and BIND
- About Types of Name Servers
- About DNS Configuration Files
- About the /etc/named.conf File
- About Resource Records in Zone Files
- About Resource Records for Reverse-name Resolution
- About the NTP Daemon
- Configuring the ntpd Service
- Configuring the PTP Service
- Using PTP as a Time Source for NTP
- About the Apache HTTP Server
- Installing the Apache HTTP Server
- Configuring the Apache HTTP Server
- Testing the Apache HTTP Server
- Configuring Apache Containers
- About Nested Containers
- About Email Programs
- About Email Protocols
- About SMTP
- About POP and IMAP
- About Sendmail Configuration Files
- About HAProxy
- Installing and Configuring HAProxy
- About the HAProxy Configuration File
- Configuring HAProxy for Session Persistence
- About the Keepalived Configuration File
- Configuring Firewall Rules for Keepalived NAT-Mode Load Balancing
- Configuring Back-End Server Routing for Keepalived NAT-Mode Load Balancing
- Configuring Firewall Rules for Keepalived DR-Mode Load Balancing
- Configuring the Back-End Servers for Keepalived DR-Mode Load Balancing
- Storage Management
- About Disk Partitions
- Managing Partition Tables Using fdisk
- Managing Partition Tables Using parted
- Mapping Partition Tables to Devices
- Viewing Swap Space Usage
- Creating and Using a Swap File
- Creating and Using a Swap Partition
- Removing a Swap File or Swap Partition
- Initializing and Managing Physical Volumes
- Creating and Managing Volume Groups
- Creating and Managing Logical Volumes
- Creating Software RAID Devices
- Configuring an iSCSI Target
- Configuring an iSCSI Initiator
- Updating the Discovery Database
- Configuring Multipathing
- Making File Systems
- Mounting File Systems
- About Mount Options
- Changing the Frequency of File System Checking
- Configuring ACL Support
- Setting and Displaying ACLs
- Enabling Disk Quotas on File Systems
- Assigning Disk Quotas to Users and Groups
- Setting the Grace Period
- Displaying Disk Quotas
- Enabling and Disabling Disk Quotas
- Reporting on Disk Quota Usage
- Maintaining the Accuracy of Disk Quota Reporting
- About Local File Systems
- About the Btrfs File System
- Creating a Btrfs File System
- Modifying a Btrfs File System
- Compressing and Defragmenting a Btrfs File System
- Resizing a Btrfs File System
- Creating Subvolumes and Snapshots
- Cloning Virtual Machine Images and Linux Containers
- Using Send/Receive to Implement Incremental Backups
- Converting a Non-root File System
- Converting the root File System
- Mounting the Image of the Original File System
- Deleting the Snapshot of the Original File System
- Recovering an Original Non-root File System
- Setting up a New NFS Server
- Configuring an Existing NFS Server
- Setting up a New HTTP Server
- Configuring an Existing HTTP Server
- Setting up a Network Installation Server
- Installing from a Network Installation Server
- About the Installation root File System
- Creating Snapshots of the root File System
- Mounting Alternate Snapshots as the root File System
- Deleting Snapshots of the root File System
- About External XFS Journals
- About XFS Write Barriers
- About Lazy Counters
- Setting Project Quotas
- About Shared File Systems
- About NFS
- Configuring an NFS Server
- Mounting an NFS File System
- Configuring a Samba Server
- About Samba Configuration for Windows Workgroups and Domains
- Configuring Samba as a Standalone Server
- Configuring Samba as a Member of an ADS Domain
- Configuring Samba as a Member of a Windows NT4 Security Domain
- About OCFS2
- Installing and Configuring OCFS2
- Preparing a Cluster for OCFS2
- Configuring the Firewall
- Configuring the Cluster Software
- Creating the Configuration File for the Cluster Stack
- Configuring the Cluster Stack
- Configuring the Kernel for Cluster Operation
- Starting and Stopping the Cluster Stack
- Creating OCFS2 volumes
- Mounting OCFS2 Volumes
- Querying and Changing Volume Parameters
- Recommended Tools for Debugging
- Mounting the debugfs File System
- Configuring OCFS2 Tracing
- Debugging File System Locks
- Configuring the Behavior of Fenced Nodes
- Load Balancing
- Oracle Real Application Cluster (RAC)
- Oracle Databases
- Authentication Configuration
- About Authentication
- About Local Oracle Linux Authentication
- Configuring Local Access
- Configuring Fingerprint Reader Authentication
- Configuring Smart Card Authentication
- Configuring IPA
- About LDAP Data Interchange Format
- Configuring an LDAP Server
- Replacing the Default Certificates
- Creating and Distributing Self-signed CA Certificates
- Initializing an Organization in LDAP
- Adding an Automount Map to LDAP
- Adding a Group to LDAP
- Adding a User to LDAP
- Adding Users to a Group in LDAP
- Enabling LDAP Authentication
- Configuring an LDAP Client to use SSSD
- Configuring an LDAP Client to Use Automount Maps
- About NIS Maps
- Configuring a NIS Server
- Adding User Accounts to NIS
- Enabling NIS Authentication
- Configuring a NIS Client to Use Automount Maps
- Configuring a Kerberos Server
- Configuring a Kerberos Client
- Enabling Kerberos Authentication
- Configuring Pluggable Authentication Modules
- Configuring an SSSD Server
- Enabling Winbind Authentication
- About User and Group Configuration
- Changing Default Settings for User Accounts
- Creating User Accounts
- About umask and the setgid and Restricted Deletion Bits
- About System Security
- Configuring and Using SELinux
- About SELinux Administration
- About SELinux Modes
- Setting SELinux Modes
- About SELinux Policies
- Targeted Policy
- Multilevel Security (MLS) Policy
- Setting SELinux Policies
- Customizing SELinux Policies
- Displaying SELinux User Mapping
- Displaying SELinux Context Information
- Changing the Default File Type
- Restoring the Default File Type
- Relabelling a File System
- Mapping Oracle Linux Users to SELinux Users
- Configuring the Behavior of Application Execution for Users
- Controlling the Firewall Service
- Listing Firewall Rules
- Inserting and Replacing Rules in a Chain
- Deleting Rules in a Chain
- Saving Rules
- Running DNS and FTP Services in a Chroot Jail
- Creating a Chroot Jail
- Using a Chroot Jail
- Configuring Logwatch
- Minimizing the Software Footprint
- Configuring System Logging
- Disabling Core Dumps
- Minimizing Active Services
- Locking Down Network Services
- Configuring a Packet-filtering Firewall
- Configuring TCP Wrappers
- Configuring Kernel Parameters
- Restricting Access to SSH Connections
- Configuring File System Mounts, File Permissions, and File Ownerships
- Checking User Accounts and Privileges
- Configuring User Authentication and Password Policies
- About OpenSSH
- OpenSSH Configuration Files
- OpenSSH User Configuration Files
- User Configuration Files in ~/.ssh on the Client
- User Configuration Files in ~/.ssh on the Server
- Using ssh to Connect to Another System
- Using scp and sftp to Copy Files Between Systems
- Using ssh-keygen to Generate Pairs of Authentication Keys
- Enabling Remote System Access Without Requiring a Password
- Linux Containers
- About Linux Containers
- Supported Oracle Linux Container Versions
- Installing and Configuring the Software
- Setting up the File System for the Containers
- Creating and Starting a Container
- About the lxc-oracle Template Script
- About Veth and Macvlan
- Modifying a Container to Use Macvlan
- Modifying a Container to Use a Static IP Address
The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.24.3 Creating User Accounts
To create a user account by using the useradd command:
#
useradd[options]usernameThe command prompts you to enter a password for the account. If you want to change the password non-interactively (for example, from a script), use the chpasswd command instead:
echo "
username:password" | chpasswdAlternatively, you can use the newusers command to create a number of user accounts at the same time.
For more information, see the chpasswd(8) , newusers(8) , passwd(1) , and useradd(8) manual pages.
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- About Linux Containers
- OpenSSH User Configuration Files
- About Disk Partitions
- About the GRUB Configuration File
- Yum