method
save_history=
![Some documentation Importance_1](https://d2vfyqvduarcvs.cloudfront.net/images/importance_1.png?1349367920)
save_history=(val)
public
Sets IRB.conf[:SAVE_HISTORY] to the given val and calls #init_save_history with this context.
Will store the number of val entries of history in the #history_file
Add the following to your .irbrc to change the number of history entries stored to 1000:
IRB.conf[:SAVE_HISTORY] = 1000