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. { allowDiskUse: true} is optional if your data is not huge. { $limit : 5 }, you can set display more data.
Fast way to find duplicate data in MongoDB Read More »
You may found this error from your php-fpm and the php-fpm crash Solution to stop ERROR: failed to ptrace(PEEKDATA) You can just comment out the php-fpm config then comment out
ERROR: failed to ptrace(PEEKDATA) pid 17402: Input/output error (5) 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 »
Solution I’m using the OVH kernel, so it is impossible to use with MongoDB, to solve this issue I have to install back the original kernel of the linux, then this error will be gone.
I’ve a lot of wordpress sites, recently few of my old sites infected malware, and those spammer using few of my sites to spam email. I would like to share the way I fix this. Most of the spammer look for the 777 path, most properly in /wp-content/uploads/ So I try to scan all the php files that they upload there with date. find ./public_html/wp-content/uploads/ -type f -name ‘*.php’ -printf ‘%TY-%Tm-%Td %TT %p\n’ | sort Then I found these 2015-10-16 12:25:01 ./wp-content/uploads/2013/05/blog84.p[…]
Remove WordPress Malware using Linux Shell Console Read More »
I need to find some string in all folders. Note: -r is recursive -n is line number -w stands match the whole word
Finding all files containing a text string on Linux or Mac Read More »
I want to mass rename hundred of filenames like filename 001.jpg to filename-001.jpg … … … filename 099.jpg to filename-099.jpg I use this command to rename all in few seconds in my MacBook Pro. I think it is fine to run in any linux.
Fastest way to rename filenames with space to dash in linux Read More »
You received error from the sed command in Mac, because the argument in mac is different. If you type in Mac terminal, you may receive error like this The first argument should be the extension of the backup file. The correct way is or If you don’t want any backup file, you can do like
command c expects followed by text error in Mac Read More »
One of the nice book that suitable for Hacker, but too bad it is in Japanese version. Wish someone will translate to English version in future. You can find the author from here Satoru Takabayashi, Fumitoshi Ukai, Yusuke Sato, Shinichiro Hamaji, Kazuyuki Shudo Chapter 1. Introduction 1. Introduction to Binary Hacks 2. Terminology of Binary Hacks 3. Using “file” to
Hacker’s Secret 100 Secret Techniques Revealed Read More »
vi /etc/network/interfaces modify iface eth0 inet dhcp to iface eth0 inet static Then add this below address 192.168.1.200 netmask 255.255.255.0 network 192.168.1.0 broadcast 192.168.1.255 gateway 192.168.1.1
Set Static IP for Raspberry Pi Read More »
