GNU bug report logs - #23500
Manual:4.3 Guile Scripting: Show to a layman that Guile can invoke shell commands, which are common in bash scripts.

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Evan Davis <erdavis7 <at> gmail.com>
Subject: bug#23500: closed (Re: bug#23500: Manual:4.3 Guile Scripting:
 Show to a layman that Guile can invoke shell commands, which are common in
 bash scripts.)
Date: Tue, 28 Feb 2017 15:24:02 +0000

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Your bug report

#23500: Manual:4.3 Guile Scripting: Show to a layman that Guile can invoke shell commands, which are common in bash scripts.

which was filed against the guile package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 23500 <at> debbugs.gnu.org.

-- 
23500: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=23500
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Andy Wingo <wingo <at> pobox.com>
To: Evan Davis <erdavis7 <at> gmail.com>
Cc: 23500-done <at> debbugs.gnu.org
Subject: Re: bug#23500: Manual:4.3 Guile Scripting: Show to a layman that
 Guile can invoke shell commands, which are common in bash scripts.
Date: Tue, 28 Feb 2017 16:23:45 +0100

On Tue 10 May 2016 00:48, Evan Davis <erdavis7 <at> gmail.com> writes:

> In §4.3 (Guile Scripting) please mention §7.2.7 (Processes), or at
> least the system/system* and open-pipe procedures.  Maybe include an
> example of a guile script invoking shell commands, as is common in
> bash.  As a layman, the manual's scripting section left me unsure
> whether Guile could easily replace my typical bash scripts, and I
> needed further help from Wingo on <irc://irc.freenode.net/guile>.

Tx for the report.  Added this text to the end of the section:

  Finally, seasoned scripters are probably missing a mention of
  subprocesses.  In Bash, for example, most shell scripts run other
  programs like @code{sed} or the like to do the actual work.

  In Guile it's often possible get everything done within Guile itself, so
  do give that a try first.  But if you just need to run a program and
  wait for it to finish, use @code{system*}.  If you need to run a
  sub-program and capture its output, or give it input, use
  @code{open-pipe}.  @xref{Processes}, and @xref{Pipes}, for more
  information.

Andy

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From: Evan Davis <erdavis7 <at> gmail.com>
To: bug-guile <at> gnu.org
Subject: Manual:4.3 Guile Scripting: Show to a layman that Guile can invoke
 shell commands, which are common in bash scripts.
Date: Mon, 9 May 2016 18:48:26 -0400

In §4.3 (Guile Scripting) please mention §7.2.7 (Processes), or at
least the system/system* and open-pipe procedures.  Maybe include an
example of a guile script invoking shell commands, as is common in
bash.  As a layman, the manual's scripting section left me unsure
whether Guile could easily replace my typical bash scripts, and I
needed further help from Wingo on <irc://irc.freenode.net/guile>.

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