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A comment on Explain Shell.

Re:Explain Shell by cheeze on Wednesday March 29, 2017 @03:29PM (#13989750)
Pretty awesome, but broke on the first command I tried (granted, it is bash specific IIRC)

echo $(( 1 + 2 ))

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Re:Explain Shell by phaemon on Wednesday March 29, 2017 @04:35PM (#13990329)
It's actually POSIX standard. See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3...
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Re:Explain Shell by kps on Wednesday March 29, 2017 @09:54PM (#13992270)
However, the site does interpret input as bash and not a Posix-compliant shell.
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Re:Explain Shell by cat199 on Wednesday March 29, 2017 @03:55PM (#13989970)
not at all a bashism

  $ uname -sr
  OpenBSD 6.0
  $ ps T
    PID TT  STAT       TIME COMMAND
  85828 pc  Ssp     0:00.01 -ksh (ksh)
  34802 pc  R+p     0:00.00 ps -T
  $ echo $(( 1 + 2 ))    
  3
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Re:Explain Shell by mcnaughtonrules on Wednesday March 29, 2017 @06:34PM (#13991252)
Resident bsd hero
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Re:Explain Shell by contras1970 on Thursday March 30, 2017 @06:18AM (#13994171) 

    % /bin/sh
    $ echo $((1 + 2))
    3
    $ uname -srm
    DragonFly 4.7-DEVELOPMENT x86_64
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