fish-shell/doc_src/cmds/eval.rst
Fabian Boehm 38b24c2325 docs: Use :doc: role when linking to commands
This makes it so we link to the very top of the document instead of a
special anchor we manually include.

So clicking e.g. :doc:`string <cmds/string>` will link you to
cmds/string.html instead of cmds/string.html#cmd-string.

I would love to have a way to say "this document from the root of the
document path", but that doesn't appear to work, I tried
`/cmds/string`.

So we'll just have to use cmds/string in normal documents and plain
`string` from other commands.
2022-09-24 10:56:43 +02:00

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.. _cmd-eval:
eval - evaluate the specified commands
======================================
Synopsis
--------
.. synopsis::
eval [COMMANDS ...]
Description
-----------
**eval** evaluates the specified parameters as a command.
If more than one parameter is specified, all parameters will be joined using a space character as a separator.
If the command does not need access to stdin, consider using :doc:`source <source>` instead.
If no piping or other compound shell constructs are required, variable-expansion-as-command, as in ``set cmd ls -la; $cmd``, is also an option.
Example
-------
The following code will call the ls command and truncate each filename to the first 12 characters.
::
set cmd ls \| cut -c 1-12
eval $cmd