How to see a list of available php7 package to install
2018-12-28
You can run this command:Read More →
PHP7.2: How to install mcrypt extension
2018-12-28
mcrypt extension is an interface to the mcrypt cryptography library. mcrypt is included in php5 to php7.1 , but it’s removed from php7.2 . The instructions below help you install mcrypt for php7.2 on Ubuntu. when you are shown the prompt: hit Enter once installed , you need to create a configuration file for itRead More →
git ignore certificate error
2018-12-12
git clone https://github.com/commx/python-rrdtool.git -c http.sslVerify=falseRead More →
bash – check if a string in a variable
2018-12-11
if you use#! /bin/zsh $MYVAR=”Hello world” if [[ $MYVAR == ”hello”]] thenecho “FOUND”fi If we don’t use #! /bin/zsh $MYVAR=”Hello world”if [[ $MYVAR == ”hello”]]; thenecho “FOUND”fiRead More →
Virtualbox: can’t remove / attach new hard disk
2018-12-09
When i try to remove a disk in Virtualbox with this command: I got the following error And the fix is:Read More →
DNS: Why i can’t create txt record for sub domain?
2018-11-30
Please check if your subdomain is a CNAME , the DNS rule does not allow CNAME record to have other record. The fix is to use A record for your sub domain – this could be hard if you are using some cloud service like aws.Read More →
cricket – rrdcached: some info in mind
2018-11-29
rrdcached is a daemon that receives updates to existing RRD files, accumulates them and, if enough have been received or a defined time has passed, writes the updates to the RRD file. A flush command may be used to force writing of values to disk, so that graphing facilities and similar can work with up-to-date data. rrdcached uses the line protocol to communicate with client. When we start rrdcached , it will listen on port 42217 and create a socket file. We can telnet to port 42217 or use ncat to create a connection to socket file. telnet localhost 42217 or nc -U /var/run/rrdcached/rrdcached.sock AfterRead More →
A detailed page about PHP thread.
2018-11-27
A Detailed Page About PHP Threads: Understanding Multithreading in PHP PHP is one of the most widely used server-side programming languages, primarily known for its ability to generate dynamic web pages and handle requests on web servers. While PHP is designed to be fast and efficient for web development, it traditionally operates on a single-threaded, synchronous model, meaning each request is handled one at a time. This approach is simple, but it can sometimes lead to inefficiencies, particularly when tasks are time-consuming or when there is a need to handle multiple operations simultaneously. In environments where performance is critical or when executing tasks like backgroundRead More →
Mysql import from 5.6 to 5.7 : Column count of mysql.user is wrong. Expected 42, found 44. The table is probably corrupted
2018-11-26
You might receive the error Column count of mysql.user is wrong. Expected 42, found 44. The table is probably corrupted , this is probably because you import the whole database from mysql 5.6 to 5.7 . The table structure has changed , so you need to update it. You can use the command mysql_upgrade to do this work for you. After you import the data , run this file mysql_upgrade -uroot -p -h127.0.0.1 -P3306 this command will go all over your databases table and upgrade the database structure . mysql.tables_priv OK mysql.time_zone OK mysql.time_zone_leap_second OK mysql.time_zone_name OK mysql.time_zone_transition OK mysql.time_zone_transition_type OK mysql.user OK UpgradingRead More →
Samsung J7 dead after not using for long time.
2018-11-20
I had a samsung J7, it’s in the drawer for many months. today i tried to charge it, there was no sign it’s charging. i changed many cables , i thought the battery is dead. Luckily i have its original charger adapter + cable , i connected it to the phone , the phone starts up . i don’t know if there is any difference between the original charger and other compatible charger. Hope it help you in some cases.Read More →