The “command not found” error message you’re encountering indicates that the python command is not recognized by your shell because it is not in your shell’s PATH. Here are some steps you can take to resolve this issue: Check if Python is installed: python3 –version If Python is installed, the above command will display the … Read more
You can check the size of a file in Linux/Unix using the stat command. The stat command provides information about the file, including its size. Here’s an example of how to check the size of a file named file.txt: stat -c %s file.txt The -c option specifies the format for the output, and %s represents … Read more
You can append text to the end of a file in Linux using the echo command and the >> operator. The echo command outputs the specified text, and the >> operator appends the output to the end of the specified file. Here’s an example of how to append text to the end of a file … Read more
If your MacOS keeps asking for the passphrase for your ssh key after an upgrade or a reboot, there are a few possible solutions: Use ssh-add to add the key to the ssh-agent: eval “$(ssh-agent -s)” ssh-add -K ~/.ssh/id_rsa The -K option stores the passphrase in the Keychain, so you won’t be prompted for it … Read more
In Linux or Unix, you can copy a single file to multiple directories using a loop in a shell script. Here’s an example script that uses the cp command to copy the file file.txt to multiple directories dir1, dir2, and dir3: #!/bin/bash directories=(dir1 dir2 dir3) file=file.txt for dir in “${directories[@]}”; do cp “$file” “$dir” done … Read more
You can force an ssh client to use only password authentication when public key authentication is also configured by using the -o PreferredAuthentications=password option when connecting to the server. For example: ssh -o PreferredAuthentications=password user@server This option tells ssh to only use password authentication and ignore any public key authentication that may be configured. The … Read more
The error “Error while loading shared libraries: libXrender.so.1” occurs because the system is unable to find the shared library libXrender.so.1, which is needed to run a program. To resolve this error, you can install the missing library by running the following command: sudo apt-get install libxrender1 This will install the libXrender.so.1 library and its dependencies … Read more
To create a new sudo user on an Ubuntu Linux server, you can follow these steps: Log in to your Ubuntu Linux server as the root user or as a user with sudo privileges. Run the following command to create a new user: sudo adduser <username> Replace <username> with the desired username for the new … Read more
To log a real user’s IP address with Nginx in log files, you can use the $remote_addr variable. This variable contains the IP address of the user making the request. Here’s how you can configure Nginx to log the real user’s IP address in the log files: Open the Nginx configuration file: The Nginx configuration … Read more
To zip a folder in Ubuntu Linux / Debian Linux, you can use the zip command. Here’s how you can use it: Open a terminal window: To open a terminal window, click on the terminal icon in the applications menu or press Ctrl + Alt + T. Navigate to the folder you want to zip: … Read more