Rsync: Theoretical mathematics and algorithm This article is excellent for understanding theoretical mathematics and some of the mechanics of the rsync algorithm. Unfortunately, they are more about the theory than the implementation of the rsync utility. rsync is an open-source utility that provides fast incremental file transfer. rsync is freely available under the GNU General Public License and is … Read more
The invention of the telephone Alexander Graham Bell Alexander Graham Bell, best known for his invention of the telephone, revolutionized communication as we know it. His interest in sound technology was deep-rooted and personal, as both his wife and mother were deaf. While there’s some controversy over whether Bell was the true pioneer of the … Read more
story of bulb invention Who Invented the Light Bulb? Do you know How bulb invented? Here we tried to solve all these queries. So let’s start story of bulb invention. Though Thomas Edison is usually credited with the invention of the light bulb, the famous American inventor wasn’t the only one who contributed to the … Read more
Microsoft Windows vs. Linux File System Which Operating system you like most and why? Share your opinion here https://discuss.eduguru.in/poll/which-operating-system-you-like-most/ Microsoft Windows files are stored on different data drives (C: D: E:). On Linux, beginning with the root directory, files are organized in a tree structure. This directory is the beginning of the file system. It … Read more
Best Wireless Bluetooth Earphones in India With the rapid removal of the 3.5mm audio jack from most modern-day smartphones, wireless Bluetooth earphones are slowly but surely becoming the way to go when it comes to audio solutions for most users. Audio product manufacturers have also understood the widespread appeal of untethered earphones and are bringing … Read more
How to check table Engine in MySQL With the help of below query, we can check the table engine in MySQL: SELECT TABLE_NAME, ENGINE FROM information_schema.TABLES WHERE TABLE_SCHEMA = ‘nicesys’; Please change the db name to your DB name. You will get the output like : | TABLE_NAME | ENGINE | +——————–+——–+ | cdr | … Read more
Answer, Playback, and Hangup Applications Answers a ringing channel. Answer([delay]) exten => s,1,Answer() exten => s,1,Answer(2) exten => 123,1,Answer() Instructs Asterisk to answer the channel if it is ringing. If the channel is not ringing, this application has no effect. It is generally recommended that the channel be answered before other applications are called, unless … Read more
MySQL Addtime() : Adding time to datetime The ADDTIME() function adds a time interval to a time/datetime and then returns the time/datetime. Syntax ADDTIME(datetime, addtime) Parameter Values Parameter Description datetime Required. The time/datetime to be modified addtime Required. The time interval to add to datetime. Both positive and negative values are allowed Example: SELECT ADDTIME(“2021-06-03 09:34:21”, “2”); Output: … Read more
Asterisk Call Recordings with MixMonitor MixMonitor() — Records a channel in the background, mixing both directions synchronously. Synopsis MixMonitor(filename.ext,options,command) Records the audio on the current channel to the specified file. If the filename is an absolute path, MixMonitor() uses that path; otherwise it creates the file in the configured monitoring directory from asterisk.conf. If command is specified, it will be … Read more
Number masking or Call masking services Number masking or call masking is a solution where actual caller number is not being displayed to the customer. Here, we will understand that how this can be accomplished. Number masking or call masking is the best way for businesses to safeguard their customers’ identity, and prevent misuse of … Read more