<s>[INST] How can I quickly find previous commands I wrote in gnome-terminal? [/INST] To quickly find previous commands you wrote in gnome-terminal, you can use the up and down arrow keys. The up arrow key will cycle through previously entered commands in reverse chronological order, while the down arrow key will cycle through them in the opposite direction.

You can also use the history command to see a list of previously entered commands. To quickly find a specific command, you can use the CTRL + R key combination and start typing the command you're looking for. This will initiate a reverse search through the history and display the most recent command that matches what you've typed so far.

Additionally, you can use the grep command to search for specific commands in the history. For example, to find all commands that contain the word "example", you can run the following command:

```bash
history | grep example
```

These are just a few ways to find previous commands in gnome-terminal. Experiment with these methods to find the one that works best for you.</s>\ <s>[INST] Some commands that I typed a long time ago are now out of my history, and I'm sad about that. How do I allow the command history to be longer? [/INST] You can change the length of your command history on Linux by modifying the HISTSIZE variable in your shell configuration file, such as ~/.bashrc or ~/.bash_profile.

To increase the number of commands stored in history, add the following line to the file:

```bash
export HISTSIZE=10000
```

Replace 10000 with the desired number of commands to be stored.

Save and close the file and then run the following command in your terminal to apply the changes:
```bash
source ~/.bashrc
```

Or:

```bash
source ~/.bash_profile
```

Depending on the file you are editing.

This will set the HISTSIZE environment variable to the specified value, which will determine the number of commands stored in history.</s>