mksquashfs:tldr:38db1

The given command is used to create a SquashFS filesystem from one or multiple files or directories.

Here is a breakdown of the command:

• mksquashfs: This is the command used to create a SquashFS filesystem.
• ${filename_or_directory1 filename_or_directory2 ---}: This refers to the input files or directories that will be included in the SquashFS filesystem. You can specify one or more filenames or directories here.
• ${filesystem-squashfs}: This represents the output file name and location of the SquashFS filesystem that will be created.
• -wildcards: This flag allows the usage of wildcards in specifying the input filenames or directories. For example, you can use *.txt to include all files with a .txt extension.
• -e "${*-gz}": This flag specifies the pattern of files or directories that should be excluded from the SquashFS filesystem. The pattern "${*-gz}" will exclude all files ending with .gz.

In summary, the command creates a SquashFS filesystem from the specified input files or directories, using wildcard patterns for inclusion and exclusion. The resulting SquashFS filesystem will be saved with the name specified in ${filesystem-squashfs}.