fswatch:tldr:f52ce

fswatch: Run a Bash command on file creation, update or deletion.

fswatch

$ fswatch ${filename} | xargs -n 1 ${bash_command}

try on your machine

This command performs the following actions:

fswatch ${filename}: This part of the command utilizes the fswatch command-line tool to monitor changes in the ${filename} specified. fswatch is a utility used for watching changes in the filesystem. It continuously scans the file system and outputs the paths of modified files.
|: The pipe symbol "|" is used to redirect the output of the preceding command (fswatch ${filename}) to the next command (xargs -n 1 ${bash_command}).
xargs -n 1 ${bash_command}: This part of the command takes the output of the previous command (fswatch ${filename}) line by line and executes the ${bash_command} specified for each line. xargs is a command-line tool that takes a list of items as input and applies a command to each item.

In summary, this command monitors changes in the ${filename} specified using fswatch and when changes occur, it executes the ${bash_command} specified for each change using xargs.

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.

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