ls & rm with regular expression

e.g. rm -rf backup-20070[8-9]-*

would delete :

• backup-200708-morning
• backup-200708-evening
• backup-200709-night
• backup-200709-latenight

but not :

• backup-200706-morning
• backup-200707-afternoon
• backup-200711-midnight

e.g. ls backup-20070[1-9] would list all backup starting from January to September but leave October, November & December out, of year 2007.