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grim:tldr:236bb
grim: Use a custom filename.
$ grim "${filename-png}"
try on your machine
The given command is using the grim
tool to capture a screenshot and save it as a PNG file with a specified filename.
Here's a breakdown of the command:
grim
: This is the command for thegrim
tool, which is a screenshot utility in the Wayland display server."${filename-png}"
: This is a parameter passed to thegrim
command enclosed within double quotes. The parameter specifies the filename for the screenshot and uses a shell parameter expansion technique called "parameter substitution."${filename-png}
: This is the parameter${filename}
with the suffix-png
appended to it. The-png
suffix indicates the desired file format as PNG.${filename}
refers to a variable, likely containing the name of the desired screenshot file.- The parameter substitution essentially replaces
${filename}
with the value it holds and adds the-png
suffix, thus producing the filename with the PNG extension.
To summarize, the command captures a screenshot using grim
and saves it as a PNG file with a filename provided by the ${filename}
variable.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.