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\section history history - Show and manipulate command history
\subsection history-synopsis Synopsis
\fish{synopsis}
history [--save|--clear|--merge]
history [--search|--delete] [--prefix "prefix string"|--contains "search string"]
\endfish
\subsection history-description Description
`history` is used to list, search and delete the history of commands used.
The following options are available:
- `--save` saves all changes in the history file. The shell automatically saves the history file; this option is provided for internal use.
- `--clear` clears the history file. A prompt is displayed before the history is erased.
- `--merge` immediately incorporates history changes from other sessions. Ordinarily `fish` ignores history changes from sessions started after the current one. This command applies those changes immediately.
- `--search` returns history items in keeping with the `--prefix` or `--contains` options.
- `--delete` deletes history items.
- `--prefix` searches or deletes items in the history that begin with the specified text string.
- `--contains` searches or deletes items in the history that contain the specified text string.
If `--search` is specified without `--contains` or `--prefix`, `--contains` will be assumed.
If `--delete` is specified without `--contains` or `--prefix`, only a history item which exactly matches the parameter will be erased. No prompt will be given. If `--delete` is specified with either of these parameters, an interactive prompt will be displayed before any items are deleted.
\subsection history-examples Example
`history --clear` deletes all history items
`history --search --contains "foo"` outputs a list of all previous
commands containing the string "foo".
`history --delete --prefix "foo"` interactively deletes the record
of previous commands which start with "foo".
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