I don't deal with all these all the time but...

Programming

char = "tchar" not care?

hard c like car (because it comes from "character")

= bang not exclamation?

I'm just used to calling this exclamation - where did "bang" come from? Must be an Americanism.

# = pound not hash? Exception #! = shebang

hash - again, pound is an Americanism

* = splat not star?

star, or asterisk

regex = "rej ex" not "regg ex"?

rejex - hard g here just sounds weird

sql = "s q l" not "sequel" (already answered, just i.e.)

Both depending on what mood I'm in. Normally, I say "Sequel Server", "My Sequel", but "S Q L" when on its own

Unixen

| = pipe not vertical bar?

pipe, though I used to call it vertical bar.

bin = bin as in pin , not as in binary?

bin as in that's where all my junk goes :)

lib = lib as in library , not as in liberate?

lib as in liberate because saying "libe" just sounds wrong. Sounds like I'm trying to say "lube" in an Australian accent

etc = "ett see" , not "e t c"

et cetera, but I'm not a unix guy mainly so I could be wrong with that

Annoyance

/ = slash not backslash

slash or forward slash.

LaTeX = "laytek" not "lay teks"

as in latex since that's how it's spelt - maybe you can use it with your lib from above.