1* 2*Ruby is copyrighted free software by Yukihiro Matsumoto <matz@netlab.co.jp>. 3*You can redistribute it and/or modify it under either the terms of the GPL 4*(see COPYING.txt file), or the conditions below: 5* 6* 1. You may make and give away verbatim copies of the source form of the 7* software without restriction, provided that you duplicate all of the 8* original copyright notices and associated disclaimers. 9* 10* 2. You may modify your copy of the software in any way, provided that 11* you do at least ONE of the following: 12* 13* a) place your modifications in the Public Domain or otherwise 14* make them Freely Available, such as by posting said 15* modifications to Usenet or an equivalent medium, or by allowing 16* the author to include your modifications in the software. 17* 18* b) use the modified software only within your corporation or 19* organization. 20* 21* c) rename any non-standard executables so the names do not conflict 22* with standard executables, which must also be provided. 23* 24* d) make other distribution arrangements with the author. 25* 26* 3. You may distribute the software in object code or executable 27* form, provided that you do at least ONE of the following: 28* 29* a) distribute the executables and library files of the software, 30* together with instructions (in the manual page or equivalent) 31* on where to get the original distribution. 32* 33* b) accompany the distribution with the machine-readable source of 34* the software. 35* 36* c) give non-standard executables non-standard names, with 37* instructions on where to get the original software distribution. 38* 39* d) make other distribution arrangements with the author. 40* 41* 4. You may modify and include the part of the software into any other 42* software (possibly commercial). But some files in the distribution 43* are not written by the author, so that they are not under this terms. 44* 45* They are gc.c(partly), utils.c(partly), regex.[ch], st.[ch] and some 46* files under the ./missing directory. See each file for the copying 47* condition. 48* 49* 5. The scripts and library files supplied as input to or produced as 50* output from the software do not automatically fall under the 51* copyright of the software, but belong to whomever generated them, 52* and may be sold commercially, and may be aggregated with this 53* software. 54* 55* 6. THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR 56* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 57* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 58* PURPOSE. 59* 60* 61*