xkcdpass:tldr:0b517
The command you provided is not a standard command, but it seems to involve a program or script called "xkcdpass" with an option "-a". The use of "${acrostic}" suggests that "acrostic" is a variable or placeholder that should be replaced with an actual value.
Based on the available information, it is difficult to provide a specific explanation without knowing more about the context and purpose of the command. However, we can make some assumptions about the meaning based on common conventions:
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"xkcdpass": It is possible that "xkcdpass" is a tool or program used to generate a password according to the principles described in the webcomic series "xkcd". "xkcd" popularized the idea that a memorable and strong password can be created by combining four random common words.
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"-a": The "-a" option could be a flag or parameter of the "xkcdpass" command, indicating that the program should generate an acrostic password. An acrostic password is created by using the first letter of each word in a phrase or sentence, making it easier to remember.
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"${acrostic}": This suggests that "acrostic" is a variable or placeholder that should be replaced with an actual value. It could be a user-defined phrase or sentence, or a predefined value from a configuration file or input.
Therefore, the given command may invoke the "xkcdpass" program with the option "-a" to generate an acrostic password based on a provided variable or value denoted by "${acrostic}". The specific functionality and behavior of this command would depend on the implementation details of the "xkcdpass" tool.