Why is there no man page for eval in bash?

Susana Dietrich asked a question: Why is there no man page for eval in bash?
Asked By: Susana Dietrich
Date created: Tue, Jun 15, 2021 7:52 AM

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Top best answers to the question «Why is there no man page for eval in bash»

  • Last but not least, eval can be a very dangerous command. Any input to an eval command must be carefully checked to avoid security problems. eval has no man page because it is not a separate external command, but rather a shell built-in, meaning a command internal to and known only by the shell ( bash ). The relevant part of the bash man page says:

FAQ

Those who are looking for an answer to the question «Why is there no man page for eval in bash?» often ask the following questions:

💻 How is the " eval " command in bash implemented?

  • It's used to evaluate code dynamically. In shells, it's implemented as a shell builtin command. Basically, eval takes a string as argument and evaluates/interprets the code in it. In shells, eval can take more than one argument, but eval just concatenates those to form the string to evaluate.

💻 What is the syntax error for eval in bash?

  • eval takes a string as its argument, and evaluates it as if you'd typed that string on a command line. (If you pass several arguments, they are first joined with spaces between them.) $ {$n} is a syntax error in bash.

💻 What is eval in shell script?

eval is a built-in Linux command which is used to execute arguments as a shell command. It combines arguments into a single string and uses it as an input to the shell and execute the commands… Now you can use this “CD” as an argument with eval command. Options: help : It displays help information.

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