remove dir bash command

Remove / Delete directory called /tmp/foo

Open the terminal. Type the following command:

$ rmdir /tmp/foo

Recursive removal

Remove all files and directories (recursive removal):

$ rm -rf /path/to/directory
$ rm -rf /tmp/foo

Please note that you can also pass -p option to rmdir command. Each directory argument is treated as a pathname of which all components will be removed, if they are empty, starting with the last most component:

$ rmdir -p /tmp/x/y/z

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moodle smtp settings configuration on php

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Index of Internet Tools

Host Name to IP Address
For a given host name this utility will use DNS to look up the IP address. If an IP address is found, an attempt will be made to locate the country in which the IP address was allocated.
IP Address to Host Name
For a given IP address this utility will interrogate the machine using that IP address to find out its host name. If the given IP address, an attempt will be made to locate the country in which the IP address was allocated.
Flushing DNS tables in Windows
Windows does not always honour the time-to-live (TTL) for DNS records. This can mean that a host than has moved from on server to another is not found as Windows continues to keep the DNS information about the old IP address of the host name. To force Windows to refresh its host name to IP address tables, the Windows DNS tables need to be flushed.
What is an ?net?
Find out the difference between an Internet, Intranet and Extranet.
Uptime
See how long a LINUX computer has been running since it was last booted.
Find
Find files on a LINUX computer
Job Control
Useful commands and techniques to control LINUX jobs
Lastlog
List last login time for all users on a LINUX system
Wtmp
List login and logouts of various users on a LINUX system
Crontab and %
How to use % in a crontab entry and for it to be used as the text character % and not a new line character
Convert Base64 Encoded Data
Convert Base64 Encoded data to ASCII and vice versa. Also convert Base64 Encoded data to EBCDIC
RSS
Syndication of data from a web site
Encryption
Understanding how modern encryption and decryption works
MSIE Download text file
How to get around the problem with MSIE downloading, and not viewing, plain text files
ISO 9001
An overview of the ISO 9001 quality management systems standard
Contracts
An overview of which party’s terms and conditions applies to a contract
Calendar
Show a calendar for any year from 1 AD to 9999 AD with interesting information about Julian and Gregorian calendars
qpsmtpd
Details of some useful qpsmtpd plugins
Yahoo! Delays E-mail
Details on why Yahoo! can delay e-mails to its customers
Other E-mail delays
An explanation of why some emails take a long time to be delivered
Obfuscate E-mail Address
How to hide an e-mail address, on a web page, from spam robots that harvest e-mail addresses
Short URLs
Convert a long URL into a much shorter URL so that it does not wrap in an e-mail message
Dreamweaver Problems
Some easily solved Dreamweaver problems
Generate a QR Code
Generate a bar code that can be read by a mobile phone with a QR Code reader app

DNS server ip adresses Free Fast Public DNS Servers List

The most basic task of DNS is to translate hostnames such as theos.in to IP address such as 74.86.49.131. In very simple terms, it can be compared to a phone book. DNS also has other important use such as email routing.

This is my list of better, fast public dns servers and free dns server (as compare to your ISP / DSL / ADSL / cable DNS service providers dns servers). These dns servers are free to all. I was able to improve my browsing speed with following DNS servers. Use any one of the following provider.

Free Public DNS Server

=> Service provider: Google
Google public dns server IP address:

  • 8.8.8.8
  • 8.8.4.4

=> Service provider:Dnsadvantage
Dnsadvantage free dns server list:

  • 156.154.70.1
  • 156.154.71.1

=> Service provider:OpenDNS
OpenDNS free dns server list / IP address:

  • 208.67.222.222
  • 208.67.220.220

=> Service provider:Norton
Norton free dns server list / IP address:

  • 198.153.192.1
  • 198.153.194.1

=> Service provider: GTEI DNS (now Verizon)
Public Name server IP address:

  • 4.2.2.1
  • 4.2.2.2
  • 4.2.2.3
  • 4.2.2.4
  • 4.2.2.5
  • 4.2.2.6

=> Service provider: ScrubIt
Public dns server address:

  • 67.138.54.100
  • 207.225.209.66