To display only today’s files in Linux or UNIX, you can use the “find” command with the “-daystart” and “-ctime” options. Here’s how to do it: find /path/to/files -daystart -ctime 0 This command searches for files in the specified directory (/path/to/files in the example) that were created or modified within the last 24 hours. The … Read more
Memory leaks can be a common problem for long-running programs, and they can cause performance issues and system crashes over time. Fortunately, Linux provides tools to check for memory leaks in programs. Here are some steps to do so: Install the valgrind tool: Valgrind is a popular tool for detecting memory leaks and other memory-related … Read more
OpenBSD includes support for mounting NTFS file systems, but you need to install the ntfs-3g package to mount them. Here’s how to mount an NTFS file system on OpenBSD: Install the ntfs-3g package: The ntfs-3g package provides the tools necessary to mount NTFS file systems on OpenBSD. You can install it using the package manager … Read more
If you’re seeing a “Too many open files” error on Nginx, it means that the operating system’s limit on the number of open files has been reached. This can happen when Nginx is running a high-traffic website, serving a large number of requests, and opening a large number of files. Here are some possible solutions … Read more
A manpage is a documentation file that provides detailed information about a specific command, program or function on a Linux/UNIX system. Here are the steps to create a manpage: Choose a name for your manpage: Typically, the name of the manpage should be the same as the name of the command or program you want … Read more
To install or append an SSH key to the authorized_keys file on a remote Linux/Unix server, you can use the ssh-copy-id command. Here are the steps to do so: Open a terminal window on your local machine. Generate an SSH key pair (if you haven’t already): Use the following command to generate a new SSH … Read more
To allow SSH console login but disallow GUI login for a user on Linux, you can modify the user’s login shell to be a non-GUI shell. Here are the steps to do so: Open a terminal window and log in as the root user or another user with administrative privileges. Edit the user’s login shell: … Read more
dhcpdump is a command-line utility that can be used to monitor DHCP (Dynamic Host Configuration Protocol) traffic on a network interface. It is useful for debugging DHCP-related issues, such as when a client is not able to obtain an IP address or when a DHCP server is not responding. Here are the steps to use … Read more
By default, macOS does not have native support for reading Linux ext3 or ext4 file systems. However, there are third-party solutions available that can enable you to read these file systems on your Mac. Here are a few options: Install FUSE for macOS and a compatible file system driver: FUSE (Filesystem in Userspace) is a … Read more
To mount an encrypted home directory (located at ~/.private) from an Ubuntu Live CD, you can use the following steps: Boot your computer using an Ubuntu Live CD. Open a terminal window. Install the ecryptfs-utils package by running the following command: sudo apt-get update && sudo apt-get install ecryptfs-utils Mount the encrypted home directory by … Read more