- For editing long commands, after setting your editor (for example `export EDITOR=vim`), **ctrl-x****ctrl-e** will open the current command in an editor for multi-line editing. Or in vi style, **escape-v**.
- To see recent commands, `history`. Follow with `!n` (where `n` is the command number) to execute again. There are also many abbreviations you can use, the most useful probably being `!$` for last argument and `!!` for last command (see "HISTORY EXPANSION" in the man page). However, these are often easily replaced with **ctrl-r** and **alt-.**.
- To see recent commands, use `history`. Follow with `!n` (where `n` is the command number) to execute again. There are also many abbreviations you can use, the most useful probably being `!$` for last argument and `!!` for last command (see "HISTORY EXPANSION" in the man page). However, these are often easily replaced with **ctrl-r** and **alt-.**.
- Go to your home directory with `cd`. Access files relative to your home directory with the `~` prefix (e.g. `~/.bashrc`). In `sh` scripts refer to the home directory as `$HOME`.
- File attributes are settable via `chattr` and offer a lower-level alternative to file permissions. For example, to protect against accidental file deletion the immutable flag: `sudo chattr +i /critical/directory/or/file`
- Use `getfacl` and `setfacl` to save and restore file permissions. For example:
- Use `getfacl` and `setfacl` to save and restore file permissions. For example:
Peter Kokot
8 years ago