sxiv:tldr:65dc5
sxiv: Open a newline-separated list of images, reading filenames from standard input.
$ echo ${filename} | sxiv -i
try on your machine
This command is a Unix/Linux command that uses two separate utilities, echo and sxiv, along with a pipe (|) to connect them.
echo is a command used to output text. In this case, ${filename} is a placeholder for a variable or file name that will be substituted during execution. The content of the variable or file name will be printed by the echo command.
The | symbol is known as a pipe and it is used to redirect the output of one command to another command as input.
sxiv is an image viewer program for Unix/Linux systems. The -i option is used to start sxiv in image mode. By piping the output of echo (which will be the value of the ${filename} variable or file name) to sxiv -i, the image viewer will open the specified image file for viewing.
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.