Permalink
Switch branches/tags
Nothing to show
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
21 lines (16 sloc) 931 Bytes

expect is an immensely handy tool for scripting interactions with programs that require a PTY. Of course, there are clones in other languages, but I like the original Tcl version.

TIL that expect ships with autoexpect, a tool that records your interaction with a program and writes out an (excessively specific) expect script to automate that interaction. This is a handy way to quickly capture a long interaction or just see how exactly to quote some sequence of input or output.

Recording tools for this kind of thing are common -- for example Selenium for recording browser interaction, and Pulover's macro creator, built on top of [AutoHotKey], for recording Windows GUI interaction -- but the output is brittle and usually requires some careful rewriting by hand.