Recent changes on "www.in-ulm.de/~mascheck/various/ash/"

• 13-02-2021:
  
  • VMWare ESX 6.7.0 has busybox 1.x as system shell
• 11-10-2014:
  
  • explicitly mention that ash accepts "{ ...; }" as body in a "for" loop like many other shells (undocumented). Not only that dash threw this out.
• 11-05-2014:
  
  • "local -" (make $- local in functions) apparently is the second characteristic feature of ash, thanks to Jilles Tjoelker
  • added some fixes on FreeBSD 9.0, thanks to Jilles Tjoelker
  • 11-05-2014: improved picture concerning android
• 12-04-2014:
  
  • added Android
• 28-04-2012:
  
  • built-ins know "--"
• 06-12-2011:
  
  • The Slackware 8.1 ff variant is not a dash 0.4.0, but similar to a dash-0.3.7-14 (explain and adjust picture)
  • mention next changes around the dash release when slackware was forked
• 13-11-2011:
  
  • debian, net- and freebsd implement <> at about '99/'00
• 12-07-2011:
  
  • writing of some busybox items improved
• 10-05-2011:
  
  • busybox has a compile time option for some bash compatibility features
• 05-05-2011:
  
  • original ash didn't know ${10}, and NetBSD 1.2 ff. parses $10 like ${10}
• 15-01-2011:
  
  • mention when built-ins jobid, lc, setvar and exp/let where rmoved
• 18-09-2010:
  
  • cygwin added, diagram updated
• 11-09-2010:
  
  • mention when case x in (x) was accepted in some releases
• 05-09-2010:
  
  • mention old-fashioned features in early linux port
  • emphasize on linux port ash-0.2 being different from versioning of original ash
• 23-08-2010:
  
  • correction: 4.3-BSD-Net/2 accepts flag v but doesn't implement it (instead of handles it like flag x). fixed on 4.4BSDalpha
  • consequently mention flags with a dash, that is, "flag -x" instead of "flag x"
• 10-08-2010:
  
  • added an example for differences which are not listed in DIFFERENCES
• 25-07-2010:
  
  • switching to dash as system-shell is one of the release goals of Debian "Squeeze".
• 21-02-2010:
  
  • mention when "test" became a built-in on Net- and FreeBSD (and when had been imported to the system from pdksh before)
• 31-01-2010:
  
  • early slackware variant not separated anymore
• 25-01-2010:
  
  • interlaced dash section with debian releases; mention last Debian release "Bo" with early ash-0.2
  • added synch with netbsd to 4.4bsd-lite2 (section and illustration)
• 11-01-2010:
  
  • remove stray "for i<newline> in... not accepted" from differences of original variant to SVR4 shell
  • family tree picture updated
  • Slackware section restructured, source repositories linked, and numbering changed from 8.1 to 9
  • dash: NetBSD-sync dates added
• 10-01-2010:
  
  • 4.4BSD-Alpha fixes "$( )" bug
  • 4.4BSD-Lite fixes "${var=`cmd`}" bug
• 07-01-2010:
  
  • added notes about the path search for functions
  • correct back-links from manpages
• 05-01-2010:
  
  • renamed "386bsd cluster patch" to "patchkit 2.4"
• 30-12-2009:
  
  • added a picture of the family tree
  • more exact dates for 4.4BSD-*
• 07-12-2009:
  
  • dash has cmd line history/editing disabled at compile time by default; mention how to compile in
  • mention also eventual descendance for some variants (early slackware variants, e.g., are derived from ash-linux-0.2, i.e., early NetBSD, i.e. 4.3BSD-Net/2)
• 14-10-2009:
  
  • improve time(-range) informations in section headings
• 05+06-09-2009:
  
  • start including facts about availability of extended character classes in dash
• 22-02-2009:
  
  • different from SVR4 shell: "for i<newline> in ...; do" (special wrapping) is not accepted
• 16-02-2009:
  
  • add years also to section titles
  • 386BSD sh(1) is identical to 4.3BSD-Net/2
  • NetBSD 3.1/4.0, FreeBSD 5.2 and dash-0.5.5.1 accept variable names without dollar in arithmetic substitution
• 31-01-2009:
  
  • improve wordings, emphasis and ordering for original release
  • 386BSD: mention changes of cluster patch
  • move job control patch note from 4.3BSD to original release
• 24-01-2009:
  
  • switching to dash as /bin/sh is a release goal for Debian Lenny
• 09-01-2009:
  
  • provide manual pages for all 4*BSD releases
• 05-01-2009:
  
  • make original manual page available (the versions on freebsd.org were processed with later nroffs and have two little errors)
  • collect the various "case x in (x)" changes in the corresponding footnote for the original ash
  • link job control patch to original source
• 03-01-2009:
  
  • more details about the ancestry of the FreeBSD variant
  • swap order of FreeBSD and early Linux port, makes more sense
  • mention change to dash as system shell in Ubuntu 6.10
• 31-12-2008:
  
  • 4.4BSD-Lite2 removes printf built-in
  • printf added to NetBSD 2.0
  • printf added to dash 0.3.8-1
  • dash 0.3.5-7: echo option "-e" removed
  • BSD/OS 3.0 has no printf built-in anymore (resynchronized with 4.4BSD-Lite2)
• 26-12-2008:
  
  • added relative internal links (relationship)
  • updated link to minix3 cvs which has moved
• 20-12-2008:
  
  • "notexistent_cmd 2>/dev/null" does not redirect in any variant (except dash since 0.4.7)
• 07-12-2008:
  
  • all ash recognize trailing "%func" and "%builtin" in PATH components, but since 4.4BSD-alpha this is not documented anymore.
• 01-12-2008:
  
  • 4.4BSD-Lite: explain "read" fix
  • 4.4BSD: had forgotten to mention bugfix from 386bsd-cluster-patch about escaping
• 20-10-2008:
  
  • dash-0.3.8-1 removes ancient support for "{ ... }" as body in a for loop
• 08-10-2008:
  
  • Minix 3.1.3 imports new ash from FreBSD 5.4
• 07-10-2008:
  
  • BSD/OS 3.0 accepts "case x in (x)"
  • wording of slackware section improved (and date corrected)
  • use "BSD/OS" for naming BSDI releases
• 01-10-2008:
  
  • improve wording of unnestable back-ticks: in fact escaping in back-ticks was not possible (until 4.4BSD)
• 17-09-2008:
  
  • another item where the original ash resembles the SVR4 shell: "set --" doesn't unset the parameter list
• 06-09-2008:
  
  • FreeBSD 4.4 fix "var=x eval echo \$var" unconfirmed yet
  • link snapshots of dash changelogs
• 03-09-2008:
  
  • explain addition of read flag -r in some variants: the original ash behaved like that by default
• 19-08-2008:
  
  • BIG-IP4.2 from F5 is BSD/OS 4.1 (= 4.0 for the shell)
• 17-08-2008:
  
  • 386BSD variant added
• 16-08-2008:
  
  • original release introduced undocumented support for #! as compile time option (non-BSD systems)
  • BSD/OS 4.0 removes (unused) #! support
• 12-08-2008:
  
  • original release knows a version variable SHELLVERS=ash-0.2, which is removed in 4.3BSD-Net2
• 11-08-2008:
  
  • 4.4BSD-Lite2 fixes a saved exit status
• 09-08-2008:
  
  • some additions to BSD/OS 4.0
  • "case x in in)" was always parsed correctly
• 08-08-2008:
  
  • BSD/OS completely rewritten, all releases (thanks to Peter Seebach for access)
  • item 4.4BSD added (from CSRG archive)
  • thus, former 4.4BSDlite here is now actually 4.4BSD; actual fixes for 4.4BSD-Lite added
  • 4.4BSD-Lite2 removes leading : in default PATH
• 22-04-2008:
  
  • BSD/OS: added 2.0
  • swapped order of BSD/OS and FreeBSD (due to timeline)
• 02-04-2008:
  
  • slackware splitted up
  • explicitly mention that dash starts as "ash"
• 27-03-2008:
  
  • mentioned slackware variant
  • some text splitted up into items for dash and busybox
• 25-03-2008:
  
  • added new item "Early port from NetBSD to Linux ('93)" (Thanks to Oleg Verych for pointing me to it)
• 28-10-2007:
  
  • FreeBSD2.2.5 added type built-in
• 22-10-2007:
  
  • NetBSD 4 accepts "case x in (x)"
  • modern behaviour about IFS vs. "$*" for NetBSD 1.3 and FreeBSD 3.1
  • incorporation of ash to busybox more detailed
  • ${x-a b c} issue backed out
• 04-09-2007:
  
  • numerous fixes for BSD/OS
    • examined 4.1BSD/OS, not 4.2
    • probably derived from NetBSD 1.2, not 4.4BSD-Lite
    • origin of tokenizer.c SCCS-ID unknown
  • NetBSD 1.0: true built-in added
• 25-07-2007:
  
  • original implementation introduced echo -e without documenting it.
  • on the BSDs, echo -e isn't activated per default anymore like in the original distribution.
• 07-06-2007:
  
  • mention: minix also lacks type built-in
• 12-11-2006:
  
  • "expr" is a built-in in the original ash
• 08-11-2006:
  
  • busybox optional built-ins more detailed
• 04-11-2006:
  
  • NetBSD, FreeBSD and minix updated concerning "-c cmd arg0 arg1"
• 01-03-2006:
  
  • minix:
    • accepts empty command
    • "false" added
    • job control disabled
    • Command line editing and history by readline()
    • doesn't read a file after exec() failed (hence #! is required)
• 28-02-2006:
  
  • ash starts aiming at POSIX.2 with 4.4BSD-Alpha
  • and its manual is rewritten
• 27-02-2006:
  
  • original ash
    • negation of pattern matching with "!!pattern"
    • flag z (don't leave pattern after redirection unchanged if it doesn't match)
  • 4.3BSD-Net/2
    • "bltin" renamed to "command"
    • "catf", "expr", "line", "nlecho" removed
    • job control fixed
    • user without HOME starts in /tmp
  • 4.4BSD-Alpha
    • atty support removed
    • "printf" added
    • negation of pipeline
    • /u/logname mechanism removed
    • "set -o" prints options
    • flag j renamed to m; C, a, b, u added; z removed
    • "You have stopped jobs" added
    • "can't shift that many" added
    • warning "running as root with dot in PATH"
    • "!!pattern" removed
  • 4.4BSD-Lite
    • "wait" has exit status
    • "missing history argument" added
    • handles empty command like simple commands
  • 4.4BSD-Lite2
    • only use ENV if IDs equal effective IDs
    • source command does path lookup
    • PATH assigment preceding a command is regarded for the lookup
    • "false" added
    • dash can be escaped in range
    • empty command not allowed anymore
  • Minix
    • thus is still missing negation of pipeline
• 20-02-2006:
  
  • dash: mention, that it's not a native debian package anymore
  • behaviour about "case x in (x)" is almost a characteristic feature of early variants.
• 15-02-2006:
  
  • BSD/OS: no "type" built-in
• 05..14-02-2006:
  
  • initial version