In Feburary 2016 30,
Open a command prompt window on a Windows computer or a terminal window on a Linux computer.
Type the command 'ftp hostname' to log into the FTP server. Replace 'hostname' with the host name or IP address of the FTP server.
Type the command 'delete dir_name/*' to delete the files within the directory. Replace 'dir_name' with the name of the directory that you want to delete.
Type the command 'rmdir dir_name' to remove the directory.
Type the command 'quit' to close the FTP session.
In Feburary 2016 30,
Showing posts with label Linux. Show all posts
Showing posts with label Linux. Show all posts
Tuesday, 1 March 2016
Sunday, 28 February 2016
Oracle ORAIn Feburary 2016 28,
In Feburary 2016 28,
Oracle servers run both an Oracle database and listener process. One Oracle listener, which you can configure to support multiple databases, receives and manages client connection requests. If the listener receives more requests than it can handle, user requests can time out; in this case, restarting the listener will resolve the error.
Database Connection
Oracle database connection requests aren't processed unless they include authentication information such as a user name, password and the name of the Oracle service. If the authentication services aren't running or the password name is incorrect, communication efforts will fail. Similarly, if the Oracle database locks up and fails to respond to database queries, Oracle will report a failure. According to “Oracle Dba on Unix and Linux” by Michael Wessler, if the Oracle database itself crashes, the program's background processes such as PMON and SMON will terminate, and you will receive an “ORA-12637 packet receive failed” or 'TNS: packet writer failure' message.
Server & Hardware
The Tnsnames.ora file on your computer contains references to Oracle servers with which it regularly communicates. If a server name is incorrect or incomplete, Oracle can't connect to it. If the port referenced in the Tnsnames.ora file isn't open, you may see an “ORA-12637 packet receive failed” message. Router and network interface controller, or NIC, card failures also cause this problem, as can insufficient server disk input/output and system memory.
Communication
Packet communication errors can occur when a network's data traffic is so great that the time-out limit hits before your computer receives a response from the Oracle server. If the packet sizes are too large for the server to process, you can change the transport date unit, or TDU, parameters in the Tnsnames.ora file. If a network router fails and the data packets are routed to other nodes that cannot handle the load, error messages will result. You also might see errors from a malicious denial-of-service attack, or hackers turning off the Oracle listener, although the latter appears as a process failure.
In Feburary 2016 28,
Oracle servers run both an Oracle database and listener process. One Oracle listener, which you can configure to support multiple databases, receives and manages client connection requests. If the listener receives more requests than it can handle, user requests can time out; in this case, restarting the listener will resolve the error.
Database Connection
Oracle database connection requests aren't processed unless they include authentication information such as a user name, password and the name of the Oracle service. If the authentication services aren't running or the password name is incorrect, communication efforts will fail. Similarly, if the Oracle database locks up and fails to respond to database queries, Oracle will report a failure. According to “Oracle Dba on Unix and Linux” by Michael Wessler, if the Oracle database itself crashes, the program's background processes such as PMON and SMON will terminate, and you will receive an “ORA-12637 packet receive failed” or 'TNS: packet writer failure' message.
Server & Hardware
The Tnsnames.ora file on your computer contains references to Oracle servers with which it regularly communicates. If a server name is incorrect or incomplete, Oracle can't connect to it. If the port referenced in the Tnsnames.ora file isn't open, you may see an “ORA-12637 packet receive failed” message. Router and network interface controller, or NIC, card failures also cause this problem, as can insufficient server disk input/output and system memory.
Communication
Packet communication errors can occur when a network's data traffic is so great that the time-out limit hits before your computer receives a response from the Oracle server. If the packet sizes are too large for the server to process, you can change the transport date unit, or TDU, parameters in the Tnsnames.ora file. If a network router fails and the data packets are routed to other nodes that cannot handle the load, error messages will result. You also might see errors from a malicious denial-of-service attack, or hackers turning off the Oracle listener, although the latter appears as a process failure.
In Feburary 2016 28,
Friday, 26 February 2016
Skills for a Computer EngineerIn Feburary 2016 26,
In Feburary 2016 26,
A computer engineer must have extensive technical skills to design and choose software components for a project. This includes understanding technical language, such as C++, Java, JavaScript, HTML, CSS, SERVLET and UML design. It also includes recognizing the major differences between operating systems like Windows, DOS, Mac and Linux. Some computer engineers also work with computer databases like MySQL, Access and Oracle.
Communication Skills
Communication and interaction is a vital part of a computer engineer's job. He must interact with managers or business owners for company projects or directly with customers, if the computer engineer is working on developing solutions for customers. The computer engineer must communicate the possibilities of the given project budget, update customers or managers on the progress of projects and be able to conduct presentations on the computer development projects.
Research and Training Skills
A computer engineer must also have extensive research and training skills, especially if placed in a managerial position. Computer sciences and possibilities in the information technology and computer industry are constantly evolving and expanding. The computer engineer must be able to research and learn new programming options and skills to provide the best possible outcome for companies or customers. The computer engineer should also be able to train coworkers or employees in these new skills and programming options.
Decision-Making and Troubleshooting Skills
Computer engineers frequently work with the design and development process of computer software on behalf of customers or within a company. The computer engineer must be able to make the best decisions for the program development project in question. This is done by combining the technical skills and knowledge with the demands and needs of the customers or company. If something does not work throughout the design and development process, the computer engineer must also be able to troubleshoot to repair the issues. This can be a clash of software programs or operation systems, for instance. These skills need to be honed for computer engineer manager positions.
In Feburary 2016 26,
A computer engineer must have extensive technical skills to design and choose software components for a project. This includes understanding technical language, such as C++, Java, JavaScript, HTML, CSS, SERVLET and UML design. It also includes recognizing the major differences between operating systems like Windows, DOS, Mac and Linux. Some computer engineers also work with computer databases like MySQL, Access and Oracle.
Communication Skills
Communication and interaction is a vital part of a computer engineer's job. He must interact with managers or business owners for company projects or directly with customers, if the computer engineer is working on developing solutions for customers. The computer engineer must communicate the possibilities of the given project budget, update customers or managers on the progress of projects and be able to conduct presentations on the computer development projects.
Research and Training Skills
A computer engineer must also have extensive research and training skills, especially if placed in a managerial position. Computer sciences and possibilities in the information technology and computer industry are constantly evolving and expanding. The computer engineer must be able to research and learn new programming options and skills to provide the best possible outcome for companies or customers. The computer engineer should also be able to train coworkers or employees in these new skills and programming options.
Decision-Making and Troubleshooting Skills
Computer engineers frequently work with the design and development process of computer software on behalf of customers or within a company. The computer engineer must be able to make the best decisions for the program development project in question. This is done by combining the technical skills and knowledge with the demands and needs of the customers or company. If something does not work throughout the design and development process, the computer engineer must also be able to troubleshoot to repair the issues. This can be a clash of software programs or operation systems, for instance. These skills need to be honed for computer engineer manager positions.
In Feburary 2016 26,
Sunday, 21 February 2016
How to Add FTP User With LinuxIn Feburary 2016 21,
In Feburary 2016 21,
Log in to the FTP server as user 'root.' Start a shell by either logging in in text mode, or by launching a terminal window from graphical mode. The specific way of performing this step depends on the Linux distribution. For example, for Ubuntu Linux, click on 'Applications' on the taskbar at the top of the screen, then select 'Terminal.'
Create the new FTP user by entering the following command into the shell:adduser -c 'Jake Nix (FTP)' -m jakenixReplace 'Jake Nix' with the user's full name, and 'jakenix' with the user name he will use to access the FTP server.
Set a password for the new account by entering the following command into the shell:passwd jakenixPress 'Enter,' then enter the same password twice, pressing 'Enter' after each time.
Configure the FTP server to make FTP accounts correspond to accounts local to the server, by adding the following line to file '/etc/vsftpd.conf' with a text editor:local_enable=YESSave the file and exit the text editor.
Restart the FTP server to make it read the change to its configuration, by entering the following command into the shell:service vsftpd restartPress 'Enter.' At that point, the new user will have been added to the FTP server, and the server will be ready to accept FTP connections from the new user.
In Feburary 2016 21,
Log in to the FTP server as user 'root.' Start a shell by either logging in in text mode, or by launching a terminal window from graphical mode. The specific way of performing this step depends on the Linux distribution. For example, for Ubuntu Linux, click on 'Applications' on the taskbar at the top of the screen, then select 'Terminal.'
Create the new FTP user by entering the following command into the shell:adduser -c 'Jake Nix (FTP)' -m jakenixReplace 'Jake Nix' with the user's full name, and 'jakenix' with the user name he will use to access the FTP server.
Set a password for the new account by entering the following command into the shell:passwd jakenixPress 'Enter,' then enter the same password twice, pressing 'Enter' after each time.
Configure the FTP server to make FTP accounts correspond to accounts local to the server, by adding the following line to file '/etc/vsftpd.conf' with a text editor:local_enable=YESSave the file and exit the text editor.
Restart the FTP server to make it read the change to its configuration, by entering the following command into the shell:service vsftpd restartPress 'Enter.' At that point, the new user will have been added to the FTP server, and the server will be ready to accept FTP connections from the new user.
In Feburary 2016 21,
How to Host a Domain Using GodaddyIn Feburary 2016 21,
In Feburary 2016 21,
Start by reading the information GoDaddy provides on its hosting plans. From the 'Hosting & Servers' menu, choose 'Hosting Plans.' Scan the summary provided on that page for a quick overview of the differences between hosting plans.
Choose the platform you will be using to host your site. You can choose Linux or Windows. Contact GoDaddy customer service at (480) 505-8877 if you do not know how to choose between Linux or Windows.
Choose a term for your hosting service. You may choose an introductory term of a month or two, or you may choose a term of one or two years.
Set up the Domain
Access the GoDaddy home page (see Resources below). This is the site where you'll be setting up a domain hosting account. Set aside about 2 hours for the process.
Guide the mouse over the 'Hosting and Servers' tab to view a list of options. Choose 'My Hosting Account' from the drop-down menu.
Select the link 'Setup a New Account.' You will be guided to an area where you can begin registration.
After entering your personal information in the fields provided, click on 'Create a New Account' at the bottom of the page.
Choose the level of membership you want and proceed to Checkout.
Type in your credit card number to pay for your purchase. Take note of any confirmation information provided. Prepare for a 48 hour delay until the site is fully available.
Call (480) 505-8877 for get help during the set up process or access the GoDaddy support forum (see Resources below).
In Feburary 2016 21,
Start by reading the information GoDaddy provides on its hosting plans. From the 'Hosting & Servers' menu, choose 'Hosting Plans.' Scan the summary provided on that page for a quick overview of the differences between hosting plans.
Choose the platform you will be using to host your site. You can choose Linux or Windows. Contact GoDaddy customer service at (480) 505-8877 if you do not know how to choose between Linux or Windows.
Choose a term for your hosting service. You may choose an introductory term of a month or two, or you may choose a term of one or two years.
Set up the Domain
Access the GoDaddy home page (see Resources below). This is the site where you'll be setting up a domain hosting account. Set aside about 2 hours for the process.
Guide the mouse over the 'Hosting and Servers' tab to view a list of options. Choose 'My Hosting Account' from the drop-down menu.
Select the link 'Setup a New Account.' You will be guided to an area where you can begin registration.
After entering your personal information in the fields provided, click on 'Create a New Account' at the bottom of the page.
Choose the level of membership you want and proceed to Checkout.
Type in your credit card number to pay for your purchase. Take note of any confirmation information provided. Prepare for a 48 hour delay until the site is fully available.
Call (480) 505-8877 for get help during the set up process or access the GoDaddy support forum (see Resources below).
In Feburary 2016 21,
Friday, 19 February 2016
How to Use Godaddy for Web HostingIn Feburary 2016 19,
In Feburary 2016 19,
Determine what you plan to use your Web site for. GoDaddy hosts small business and personal Web sites. Visit the GoDaddy 'Hosting Plans' Web page to view your options (see Resources below).
Decide how much storage and transfer capacity you need as well as how much you're willing to pay. Your storage and transfer needs will be dictated by how large your Web site will be and how much traffic you expect to get. You will also need to decide whether you will be using a Linux or Windows platform for your site.
Set Up a Hosting Account
Visit the GoDaddy home page (see Resources below). Give yourself a little more than two hours to set up the basics of your Web site. Simple details like password activations can take about 30 minutes to complete.
Drag the mouse over the section in green that reads 'Hosting and Servers' to begin the process of setting up your hosting account. Click on 'My Hosting Account.'
Select the highlighted option in blue called 'Setup New Account.' This will send you to the section to begin your Web site registration process.
Type in the requested information, such as address, phone number and name. If you are starting a small business, be sure to enter the applicable information.
Click on 'Create a New Account' to submit the information.
Select a package by checking the applicable box with your mouse. Finish up the process by clicking 'Checkout.' Then enter payment information.
Use Your Web Site
Create and upload your Web site. The software you use to create and upload your site will depend to some extent on the platform you chose. For example, if you choose a Windows platform, you can use FrontPage software to create and upload a site.
Access the Metropolis Hosting Community offered by GoDaddy to learn about, find or install third-party applications for your site.
Investigate some of the features GoDaddy offers in addition to standard features such as email addresses. For example, GoDaddy offers free blogging tools.
In Feburary 2016 19,
Determine what you plan to use your Web site for. GoDaddy hosts small business and personal Web sites. Visit the GoDaddy 'Hosting Plans' Web page to view your options (see Resources below).
Decide how much storage and transfer capacity you need as well as how much you're willing to pay. Your storage and transfer needs will be dictated by how large your Web site will be and how much traffic you expect to get. You will also need to decide whether you will be using a Linux or Windows platform for your site.
Set Up a Hosting Account
Visit the GoDaddy home page (see Resources below). Give yourself a little more than two hours to set up the basics of your Web site. Simple details like password activations can take about 30 minutes to complete.
Drag the mouse over the section in green that reads 'Hosting and Servers' to begin the process of setting up your hosting account. Click on 'My Hosting Account.'
Select the highlighted option in blue called 'Setup New Account.' This will send you to the section to begin your Web site registration process.
Type in the requested information, such as address, phone number and name. If you are starting a small business, be sure to enter the applicable information.
Click on 'Create a New Account' to submit the information.
Select a package by checking the applicable box with your mouse. Finish up the process by clicking 'Checkout.' Then enter payment information.
Use Your Web Site
Create and upload your Web site. The software you use to create and upload your site will depend to some extent on the platform you chose. For example, if you choose a Windows platform, you can use FrontPage software to create and upload a site.
Access the Metropolis Hosting Community offered by GoDaddy to learn about, find or install third-party applications for your site.
Investigate some of the features GoDaddy offers in addition to standard features such as email addresses. For example, GoDaddy offers free blogging tools.
In Feburary 2016 19,
Wednesday, 17 February 2016
How to Add a User to Webmin Via Command LineIn Feburary 2016 17,
In Feburary 2016 17,
Type 'useradd' in your Terminal window and press 'Enter.' Follow the onscreen prompts to add a new user to Linux.
Type 'sudo pico /etc/shadow' and press 'Enter.' Enter your password and press 'Enter.' This opens the shadow command, where Webmin user details are stored.
Type 'user:password:0::' replacing both 'user' and 'password' with the user name and password of your account that you created.
Press 'Esc' and then 'Y' to save changes.
In Feburary 2016 17,
Type 'useradd' in your Terminal window and press 'Enter.' Follow the onscreen prompts to add a new user to Linux.
Type 'sudo pico /etc/shadow' and press 'Enter.' Enter your password and press 'Enter.' This opens the shadow command, where Webmin user details are stored.
Type 'user:password:0::' replacing both 'user' and 'password' with the user name and password of your account that you created.
Press 'Esc' and then 'Y' to save changes.
In Feburary 2016 17,
Sunday, 7 February 2016
How to Stop FTP TransferIn Feburary 2016 07,
In Feburary 2016 07,
Click the 'Start' button in Windows XP/Vista. Click 'Run' (only Windows XP). Then type 'cmd' and press 'Enter.' A new window with a black background (MS-DOS command prompt) will appear.
In Linux, right-click on Desktop and select 'open terminal' in the pop-up menu to open a new terminal.
Type 'ftp
' or ftp '
' followed by pressing 'Enter' (e.g., 'ftp blue.red.edu').
Type '
' (press 'Enter'); then type ' ' (press 'Enter') to access the ftp server. Note: An FTP command prompt ('ftp>') should appear.
Type either 'get
' or 'put
' followed by pressing 'Enter' to download or upload a file.
Press a 'Ctrl+C' key combination on the keyboard to stop the file transfer in progress. Note: Immediately after that, the FTP command prompt should appear.
Repeat Step 4 or type 'quit' and press 'Enter' to close the ftp connection.
In Feburary 2016 07,
Click the 'Start' button in Windows XP/Vista. Click 'Run' (only Windows XP). Then type 'cmd' and press 'Enter.' A new window with a black background (MS-DOS command prompt) will appear.
In Linux, right-click on Desktop and select 'open terminal' in the pop-up menu to open a new terminal.
Type 'ftp
' or ftp '
' followed by pressing 'Enter' (e.g., 'ftp blue.red.edu').
Type '
' (press 'Enter'); then type ' ' (press 'Enter') to access the ftp server. Note: An FTP command prompt ('ftp>') should appear.
Type either 'get
' or 'put
' followed by pressing 'Enter' to download or upload a file.
Press a 'Ctrl+C' key combination on the keyboard to stop the file transfer in progress. Note: Immediately after that, the FTP command prompt should appear.
Repeat Step 4 or type 'quit' and press 'Enter' to close the ftp connection.
In Feburary 2016 07,
Tuesday, 2 February 2016
How to Add Subdomains in Go DaddyIn Feburary 2016 02,
In Feburary 2016 02,
Navigate to the GoDaddy Account Manager website and log in to your account (see Resources).
Click 'Web Hosting' below the Products area.
Click 'Launch' next to your hosting account.
Click 'Domain Management' in the Settings area on Windows and Linux Hosting Configuration 2.0. If you are using Linux Hosting Configuration 1.0, click 'Sub Domains' in the Settings area.
Click the domain name in the All Domains panel and then click 'Add Subdomain.'
Type the subdomain name that you want to create (for example, MyMusic) on Windows and Linux Hosting Configuration 2.0. To create more than one subdomain, type the subdomain names one-by-one, separating each domain name with a comma (for example, MyMusic, MySongs). If you are using Linux Hosting Configuration 1.0, type the subdomain name and then click 'Continue.'
Choose the folder where the subdomain content will be stored and then click 'OK' on Windows and Linux Hosting Configuration 2.0. On Linux Hosting Configuration 1.0, click 'Add.'
In Feburary 2016 02,
Navigate to the GoDaddy Account Manager website and log in to your account (see Resources).
Click 'Web Hosting' below the Products area.
Click 'Launch' next to your hosting account.
Click 'Domain Management' in the Settings area on Windows and Linux Hosting Configuration 2.0. If you are using Linux Hosting Configuration 1.0, click 'Sub Domains' in the Settings area.
Click the domain name in the All Domains panel and then click 'Add Subdomain.'
Type the subdomain name that you want to create (for example, MyMusic) on Windows and Linux Hosting Configuration 2.0. To create more than one subdomain, type the subdomain names one-by-one, separating each domain name with a comma (for example, MyMusic, MySongs). If you are using Linux Hosting Configuration 1.0, type the subdomain name and then click 'Continue.'
Choose the folder where the subdomain content will be stored and then click 'OK' on Windows and Linux Hosting Configuration 2.0. On Linux Hosting Configuration 1.0, click 'Add.'
In Feburary 2016 02,
Subscribe to:
Posts (Atom)