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How to reset the Disqus WordPress plugin installation
How to reset the Disqus WordPress plugin installation? After deactivating/activating the Disqus WordPress plugin, the ID and others are the same as the old ones. What I need is to change the Disqus forum ID for a WordPress installation. Find all the tuples in the _option table of WordPress that contains “disqus” and delete them….
Import Evolution mail directory to Thunderbird/imap account
I have some old emails left in the Evolution local directory (unfortunately not in the mail server’s imap directory). So how to import the Evolution directory which contains some files for the emails to Thunderbird so that I can copy them to the imap directory if needed? You can do this in two steps: First,…
Why are keys overlap in SST files at Level 0 in LevelDB system?
As is known, keys may be overlap in SST files of level 0 in LevelDB. I am wondering why it needs to be overlap? An sstable is read-only after being written to the disk from a memtable. Accumulated K/Vs in the log up to a certain size are organized as a memtable and written to…
Why is this site called Fclose? – SysTutorials QA
Why is this site called Fclose? Actually, no special meaning at all. “fclose” is just a familiar function for ones that are familiar with computers. Read more: Why setting up Fclose Questions? What does the /b/ mean in the URL of Fclose.com – SysTutorials QA Why does ; after & lead to unexpected token error…
How to redirect STDOUT of sudo command on Linux and write to file as root?
A try like the following command failed $ sudo echo “echo hello” > /usr/local/bin/hello with an message bash: /usr/local/bin/hello: Permission denied It seems the writing to the file is executed under the non-root user. How to redirect STDOUT of sudo command on Linux and write the content to the file (/usr/local/bin/hello here) as root? You…
How to choose the key used by SSH for a specific host?
How to choose a key used rather than the default ~/.ssh/id_rsa when ssh to a remote server for a specific host? You have at least 2 choices for choosing the key used by ssh. Taking ~/.ssh/key1 and user@example.com as the example here. Method one, specify the key in command line with the -i option of…