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Add "History" section in `bash` cheatsheet 

History sub-sections:
  * Commands
  * Expansions
  * Operations
  * Slices
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Bez Hermoso 2017-10-18 13:21:01 -07:00
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commit 2d29f4abf2
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@ -439,6 +439,40 @@ set -o globstar # Allow ** for recursive matches ('lib/**/*.rb' => 'lib/a/b/c
Set `GLOBIGNORE` as a colon-separated list of patterns to be removed from glob
matches.
History
-------
### Commands
| `history` | Show history |
| `shopt -s histverify` | Don't execute expanded result immediately |
### Expansions
| `!$` | Expand last parameter of most recent command |
| `!*` | Expand all parameters of most recent command |
| `!-n` | Expand `n`th most recent command |
| `!n` | Expand `n`th command in history |
| `!<command>` | Expand most recent invocation of command `<command>` |
### Operations
| `!!:s/<FROM>/<TO>/` | Replace first occurence of `<FROM>` to `<TO>` in most recent command |
| `!!:gs/<FROM>/<TO>/` | Replace all occurences of `<FROM>` to `<TO>` in most recent command |
| `!$:t` | Expand only basename from last parameter of most recent command |
| `!$:h` | Expand only directory from last parameter of most recent command |
`!!` and `!$` can be replaced with any valid expansion.
### Slices
| `!!:n` | Expand only `n`th token from most recent command (command is `0`; first param is `1`) |
| `!!:n-m` | Expand range of tokens from most recent command |
| `!!:n-$` | Expand `n`th token to last from most recent command |
`!!` can be replaced with any valid expansion i.e. `!cat`, `!-2`, `!42`, etc.
Miscellaneous
-------------