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tr:tldr:4eb0b
tr: Delete all occurrences of the specified set of characters from the input.
$ tr -d '${input_characters}' < ${filename}
try on your machine
The command tr -d '${input_characters}' < ${filename}
is using the tr
command along with some arguments and input/output redirection to perform a specific operation.
Here's an explanation of each component:
tr
is a command-line utility in UNIX-like operating systems that translates or deletes characters. It can be used to modify or manipulate text streams.-d
is an option or argument for thetr
command which specifies the action to delete characters.'${input_characters}'
is a placeholder for the specific characters you want to delete. It should be replaced with the actual characters you want to remove. The single quotes (' ') are used to prevent any variable expansions by the shell.< ${filename}
is an input redirection operator that takes the contents of a file (specified by the${filename}
variable) and feeds it as input to thetr
command. The file contents will be used as the text stream to perform the character deletion.
To summarize, this command deletes the specified characters (identified by ${input_characters}
) from the contents of the file specified by ${filename}
. The modified text stream is then printed to the standard output.
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.