I’ve save down the most basic widget code for WordPress, you can copy this to your plugin and modify it to start your first widget. You can save time on this tutorial to help you create wordpress widget from scratch. [code lang=”php”] <?php class example_widget extends WP_Widget { function __construct() { parent::__construct(false, $name = ‘Example […]
Create WordPress widget template from scratch Read More »
I would like to query the data that I need only from a server to another server, and I just use one line of command in linux shell [code lang=”shell”] mongoexport -h fromHost.com -d fromDB -c fromCollection -q ‘{ count: { $gte: 1 } }’ | mongoimport -h toHost.com -d toNewDB -c toNewCollection [/code] If
mongoexport and mongoimport with query from one host to one host Read More »
I need to find out the duplicate data content in my 40 Millions records, then I can make the unique index to my name field. [code lang=”shell”] > db.collecton.aggregate([ … { $group : {_id : "$field_name", total : { $sum : 1 } } }, … { $match : { total : { $gte :
Fast way to find duplicate data in MongoDB Read More »
You may found this error from your php-fpm and the php-fpm crash [code lang=”shell”] tail /var/log/php-fpm/error.log [15-May-2016 12:24:13] ERROR: failed to ptrace(PEEKDATA) pid 17402: Input/output error (5) [15-May-2016 12:24:13] ERROR: failed to ptrace(PEEKDATA) pid 17777: Input/output error (5) [15-May-2016 12:24:13] ERROR: failed to ptrace(PEEKDATA) pid 18886: Input/output error (5) [15-May-2016 12:25:53] ERROR: failed to ptrace(PEEKDATA)
ERROR: failed to ptrace(PEEKDATA) pid 17402: Input/output error (5) Read More »
Normally I like to do manually job. assume that the default path of your nginx cache is /var/cache/nginx This will clear all your cache in one line. Delete a single file from nginx cache If you just want to delete a single file from nginx cache, you can try this. Then it will show something
How to clear nginx cache manually ? Read More »
I’m going to resize 100G SSD to 150GB SSD in Public Cloud First I check the current mounted disk [code lang=”shell”] [root@db1 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/vda1 40G 2.4G 36G 7% / devtmpfs 3.8G 0 3.8G 0% /dev tmpfs 3.9G 0 3.9G 0% /dev/shm tmpfs 3.9G 17M 3.8G 1%
How to resize OVH Public Cloud disk in CentOS 7 linux Read More »
[code lang=”javascript”] node_modules/postcss/lib/lazy-result.js:157 this.processing = new Promise(function (resolve, reject) { ^ ReferenceError: Promise is not defined [/code] When I install the FoundationPress, after I run gulp build I saw this message, this is because the node version problem. the have mention in this post https://github.com/postcss/postcss-nested/issues/30 Solution [code lang=”shell”] vim node_modules/postcss/lib/lazy-result.js [/code] Put this to the
lazy-result.js ReferenceError: Promise is not defined Read More »
[code lang=”shell”] vim /etc/yum.repos.d/mongodb.repo [/code] Paste this to the file and save using :wq [code lang=”shell”] [MongoDB] name=MongoDB Repository baseurl=http://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.2/x86_64/ gpgcheck=0 enabled=1 [/code] Download and install mongodb using yum [code lang=”shell”] yum install mongodb-org -y [/code] Start mongod and configure auto start while system boot [code lang=”shell”] /etc/init.d/mongod restart chkconfig mongod on [/code] Check all
How to Install MongoDB 3.2 on CentOS 7 Read More »
After I install MongoDB 3.2.3 in Centos 7, I received this error when I start mongo in shell. Solution Create the init.d script. Create the following file at /etc/init.d/disable-transparent-hugepages: Make it executable. Run the following command to ensure that the init script can be used:
WARNING: /sys/kernel/mm/transparent_hugepage/enabled is ‘always’. Read More »
