Date: Wed, 31 Mar 2021 14:38:42 -0700 From: Karl Young <karly@kipshouse.org> To: Antonio Olivares <olivares14031@gmail.com> Cc: Paul Procacci <pprocacci@gmail.com>, FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: an easter calculating script that uses dc, output does not stop Message-ID: <20210331213840.GF20539@mailboy.kipshouse.net> In-Reply-To: <CAJ5UdcMJuaGmKYYBGTmNngV_dyvPWM2p9QEDH1w4CxQx18mBDQ@mail.gmail.com> References: <CAJ5UdcOHX%2BLrY0nmo4D4wF2uJgkOPebo1gn-uBV4KUQ1HPn7ZQ@mail.gmail.com> <CAFbbPugJZyUH6k4_RJw5LcVmWu6khyb4T9XbStMfNodF8rw7zQ@mail.gmail.com> <CAJ5UdcObg48_XSNsdc1gffnQ9sGmq4URJxDMTBFJb=3wA8iJDQ@mail.gmail.com> <CAJ5UdcMJuaGmKYYBGTmNngV_dyvPWM2p9QEDH1w4CxQx18mBDQ@mail.gmail.com>
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Antonio Olivares(olivares14031@gmail.com)@2021.03.31 15:53:58 -0500: > On Wed, Mar 31, 2021 at 3:44 PM Antonio Olivares > <olivares14031@gmail.com> wrote: > > > > On Wed, Mar 31, 2021 at 3:33 PM Paul Procacci <pprocacci@gmail.com> wrote: > > > > > > It does not output continuously for me. > > > > > > # uname -a > > > FreeBSD nas.myhome 12.2-RELEASE-p4 FreeBSD 12.2-RELEASE-p4 r369444 GENERIC amd64 > > > > > > On Wed, Mar 31, 2021 at 4:30 PM Antonio Olivares <olivares14031@gmail.com> wrote: > > >> > > >> Dear kind FreeBSD users, > > >> > > >> I found a script which I will attach inline. It uses dc *to do the > > >> math*, but the output runs indefinitely on FreeBSD machines. > > >> > > >> From > > >> https://forums.opensuse.org/showthread.php/435983-Easter-program > > >> > > >> <----- script follows -----> > > >> > > >> #!/bin/sh > > >> if test $# -lt 1 > > >> then > > >> echo usage: $0 year > > >> exit 1 > > >> fi > > >> echo $* '[ddsf[lfp[too early > > >> ]Pq]s@1583>@ > > >> ddd19%1+sg100/1+d3*4/12-sx8*5+25/5-sz5*4/lx-10-sdlg11*20+lz+lx-30% > > >> d[30+]s@0>@d[[1+]s@lg11<@]s@25=@d[1+]s@24=@se44le-d[30+]s@21>@dld+7%-7+ > > >> [March ]smd[31-[April ]sm]s@31<@psnlmPpsn1z>p]splpx' | dc | tr '\012' ' ' > > >> echo '' > > >> > > >> <----- end of script ------> > > >> > > >> I ran the script successfully during prior versions of FreeBSD, but it > > >> is now running infinitely( infinite loop). See run: > > >> > > >> ... > > >> to run we put > > >> $ sh easterdc.sh > > >> and the year > > >> olivares@deepcool:~/Downloads/kerTeX/Documents $ sh easterdc.sh > > >> usage: easterdc.sh year > > >> olivares@deepcool:~/Downloads/kerTeX/Documents $ sh easterdc.sh 2021 > > >> ........ > > >> 4 April April 4 April April 4 April April 4 April April 4 April > > >> April 4 April April 4 April April 4 April April 4 April April 4 > > >> April April 4 April April 4 April April 4 April April 4 April > > >> April 4 April April 4 April April ^C > > >> > > >> .... > > >> > > >> How can I fix this to just output 4 April and stop. Thanks in Advance. > > >> > > >> Regards, > > >> > > >> > > >> Antonio > > >> _______________________________________________ > > >> freebsd-questions@freebsd.org mailing list > > >> https://lists.freebsd.org/mailman/listinfo/freebsd-questions > > >> To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > > > > > > > > > > > > -- > > > __________________ > > > > > > :(){ :|:& };: > > > > olivares@e154-1$ sh easterdc.sh > > usage: easterdc.sh year > > olivares@e154-1$ uname -a > > FreeBSD e154-1 12.2-RELEASE-p4 FreeBSD 12.2-RELEASE-p4 GENERIC amd64 > > olivares@e154-1$ sh easterdc.sh > > usage: easterdc.sh year > > olivares@e154-1$ sh easterdc.sh 2021 > > 4 April 2021 > > olivares@e154-1$ > > > > On 13.0RC4 it goes infiintely :( > > > > Best Regards, > > > > > > Antonio > > I am looking at the specifics to find out what changed, I have found this: > > https://cgit.freebsd.org/src/commit/?id=c41fef90a7d > > Contributed Software > > Replaced the bc(1) and dc(1) utilities with the version developed by > Gavin D. Howard. The new versions do not depend on an external large > number library, offer GNU bc extensions, are much faster than and fix > POSIX compliance issues of the programs they replace. They support > POSIX message catalogs and come with localized messages in Chinese, > Dutch, English, French, German, Japanese, Polish, Portugueze, and > Russian. The previous implementation is still available in FreeBSD-13 > and can be selected instead of the new one by the build option > WITHOUT_GH_BC. c41fef90a7d > > > I like to use bc and dc with some scripts to calculate things and used > this script. I do not mind the changes, all I would like to see if it > is possible to add something to script so it can stop like it used to > before. > > Best Regards, > > > Antonio Antonio That's some opaque code there. You could try reverting to the older dc/bc code, as the commit message says, or you can try breaking the script up to find out what's broken. Gavin Howard does have page about his work: https://gavinhoward.com/2019/12/bc/dc-tips-and-tricks/ He mentions infinite loops, and also mentions some changes in strings and register names, so that would be a good place to start. You might also email him and ask him to take a look, especially if you find it works when you use WITHOUT_GH_BC. Good luck -karl > _______________________________________________ > freebsd-questions@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
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