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What is PIP exclamation mark?
It means run it as a shell command rather than a notebook command. For instance, using a command without ! in the terminal same as using the command with ! in jupyter notebook or google code lab. – Murat May 19 at 13:10.
What is question mark in bash?
Bash shell supports three wildcards, one of which is the question mark (?). You use wildcards to replace characters in filename templates. A filename that contains a wildcard forms a template that matches a range of filenames, rather than just one. The question mark wildcard represents exactly one character.
What is question mark in Bash?
What does exclamation mark mean Python?
In general, using an exclamation mark before the command will pass the command to the shell (not to the Python interpreter). Using ipython’s `run` or Emacs instead of IDLE allows to keep these objects in the interpreter session and to only update the function/classes/… etc that are being developed.
Can you use an exclamation mark in Bash?
The exclamation mark is part of history expansion in bash. To use it you need it enclosed in single quotes (eg: ‘http://example.org/!132’) or to directly escape it with a backslash ( \\) before the character (eg: “http://example.org/\\!132” ).
When to use an exclamation mark in a quote?
To use it you need it enclosed in single quotes (eg: ‘http://example.org/!132’) or to directly escape it with a backslash ( \\) before the character (eg: “http://example.org/\\!132” ). Note that in double quotes, a backslash before the exclam prevents history expansion, BUT the backslash is not removed in such a case.
Can you use an exclamation mark with Curl?
As well as the answer given by Daniel, you can also simply turn off history expansion altogether if you don’t use it with set +H. I would personally do single quotes, but for completeness, I will also note since it is a URL, you can encode the ! as %21, e.g. curl -v http://example.org/%21132 .
How to run more than the last command in Bash?
In the bash man page you can find a huge section titled HISTORY EXPANSION on the matter. You can do a whole host more than just run the last command, or command number X. You can do things like !cat to run the last command that started with cat.