pdfjoin:tldr:4febc

The command you provided is used to combine multiple PDF files into a single PDF file. Here is a breakdown of the command:

• pdfjoin is the command or program name used to merge PDF files.
• {/path/to/file1.pdf} is the first PDF file you want to include in the output. The path should be replaced with the actual path to the file.
• ${2-} is a variable representing the second PDF file you want to include. The variable ${2-} can be replaced with the second PDF file path or left as is if you want to include multiple PDFs without a specific second file.
• ${file2} is another variable representing the second PDF file (similar to ${2-}). You can replace it with the actual path of the file or leave it as is if you don't need to include a second file explicitly.
• ${last-3} is a variable representing the last PDF file you want to include. The variable ${last-3} can be replaced with the actual path of the file or left unchanged if you want to include the last 3 PDF files.
• --outfile is an option that specifies the output file name or path. ${output_file} is a variable representing the name or path of the output file. Replace it with the desired name or destination path.

Overall, this command combines the PDF files specified as inputs (including the first file, second file, last file, or multiple files in a sequence) into a single PDF file specified by the --outfile option.