Sqsh
Sqsh is an Open Source replacement for the isql program supplied with Sybase's Adaptive Server Enterprise relational database management system. Besides supporting or emulating most of the features that isql provides, sqsh provides a reasonably rich set of features that users have been asking of isql for the last couple of years.
In their basic forms, both isql and sqsh are simple command line tools used to Transact-SQL to a SQL Server or Open Server and display the results.
Sqsh supports, among many other things, command history, aliases and piping output to or from external programs and sources.
Sqsh is available on various flavours of UNIX, including Linux as well as Windows through the Cygwin libraries.