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pngcheck:tldr:5b897
This command is a combination of two commands in Linux/Unix shell.
-
cat
: This command is used to concatenate and display the content of files. In this case, it is used to read the content of the specified PNG image file. -
${path-to-image-png}
: This is a placeholder representing the actual path to the PNG image file. It should be replaced with the actual file path when running the command. -
|
: This is known as a "pipe" symbol, and it is used to redirect the output of the preceding command (in this case, thecat
command) to be the input of the following command. -
pngcheck
: This is a command-line utility used to check the integrity and format of PNG image files. -
-cvt
: This is an option/flag used with thepngcheck
command. It stands for "convert" and is used to analyze and report any image format changes that have been applied to the specified PNG file.
So, the overall command can be interpreted as: "Read the content of the specified PNG image file using the cat
command, then pipe it to the pngcheck
command to check and report any format conversions."