IRAF hselect を使ってヘッダ情報でリストを絞り込む

List up fits files under some condition using IRAF / hselect.

And this is how to escape the "hyphen" that is included in the card (e.g. DATA-TYP.)

 https://home.hiroshima-u.ac.jp/akitaya/research/memo/iraftips.html

AKTYさんありがとうございます・・・。

cl> hselect *.fits $I '@"DATA-TYP" == "BIAS"'

$I : Input filename

@ <= ????? TOTALLY NO IDEA WHY ????? 

 but it works. Might be additional feature.

よくわからないけど@つけるといいらしいよ。