sdiff:tldr:3a44a

The command "sdiff" is used to compare two files line by line and output the differences between them. Here is a breakdown of the command you provided:

• "sdiff": This is the command itself which initiates the file comparison process.
• "-i": This option is used to ignore leading spaces and tabs while comparing the files. It ignores any differences caused by these whitespace characters.
• "${filename1}": This is a placeholder for the first filename or path. You should replace "${filename1}" with the actual name or path of the first file you want to compare.
• "${filename2}": Similar to the previous placeholder, this represents the second filename or path. Replace "${filename2}" with the actual name or path of the second file you want to compare.

To use the command, you need to replace "${filename1}" and "${filename2}" with the actual names or paths of the files you want to compare. For example, if you want to compare two files named "file1.txt" and "file2.txt", the command would look like:

sdiff -i file1.txt file2.txt