The preview_post_link filter in WordPress can be used to change the URL of the Preview Post button on the post editor screen. You can use the following code to change the URL of the Preview Post button: function custom_preview_post_link( $preview_link, $post ) { $preview_link = home_url( ‘/my-custom-preview-url/?p=’ . $post->ID ); return $preview_link; } add_filter( … Read more
To delete the source file after a successful transfer using rsync, you can use the –remove-source-files option. For example: rsync –remove-source-files source_file destination This will transfer the file source_file to the destination and remove it from the source location after the transfer is complete. Note that the –remove-source-files option is only applied if the … Read more
To delete a word from a file or input using the sed command in Linux or Unix, you can use the following syntax: sed ‘s/word_to_delete//g’ file.txt This will search for all instances of the word word_to_delete in the file file.txt and delete them. The g at the end of the expression specifies that all … Read more
To install htop on OpenBSD, you can use the pkg_add command, which is the package manager for OpenBSD. First, make sure your package list is up-to-date by running the following command: sudo pkg_add -u Next, you can install htop by running the following command: sudo pkg_add htop This will download and install the … Read more
A robots.txt file is a file used by web servers to communicate with web robots (also known as “bots” or “crawlers”) about which pages or sections of a website should or should not be crawled and indexed. The default content of a robots.txt file can vary depending on the web server and the specific configuration, … Read more
In Unix and Linux systems, the passwd command is used to change a user’s password. The basic syntax is as follows: passwd [options] [username] If you’re changing your own password, you can simply run the command without specifying a username: passwd The system will prompt you for your current password and then for … Read more
The “awk: warning: escape sequence ‘<‘ treated as plain ‘>’” error message is produced by the awk command when it encounters an escape sequence in a string that it does not recognize. In this case, the escape sequence \< is being interpreted as >, which can cause unexpected results in your script. To resolve this … Read more
The “warning: CUPSEXT could not be loaded. Please check HPLIP installation” message usually indicates that there is an issue with the HPLIP (HP Linux Imaging and Printing) package installed on your Linux system. This message can occur when trying to use the HPLIP toolbox or run a HP printer setup. To resolve this issue, you … Read more
You can blacklist a package from being installed in Debian or Ubuntu using the apt-mark command. This allows you to prevent a package from being installed, updated, or removed, even if it is specified as a dependency by another package. Here’s how to blacklist a package: sudo apt-mark hold <package_name> Replace <package_name> with the … Read more
To find out the DNS server IP addresses or names in a Unix-like operating system, you can use the nslookup command or the cat command to view the /etc/resolv.conf file. Here’s how to use nslookup: nslookup google.com This will return the IP address of the DNS server used by the system to resolve domain … Read more