Warning: Work in progress! Leave feedback on Zulip or Github if you'd like this doc to be updated.

OSH Table of Contents

These are links to topics in the Oils Reference.

Siblings: YSH Topics, Data Topics

Table of Contents
Front End (front-end)
Command Language (cmd-lang)
Assignments and Expressions (osh-assign)
Word Language (word-lang)
Other Mini Languages (mini-lang)
Builtin Commands (builtin-cmd)
Global Shell Options (option)
Special Variables (special-var)
Plugins and Hooks (plugin)

Front End (front-end)

  [Usage]         osh-usage   config   startup   line-editing   prompt
  [Lexing]        comment #   line-continuation \

Command Language (cmd-lang)

  [Commands]      simple-command   semicolon ;
  [Conditional]   case   if   true   false   colon :
                  bang !   and &&   or ||   dbracket [[
  [Iteration]     while   until   for   for-expr-sh ((
  [Control Flow]  break   continue   return   exit
  [Grouping]      sh-func   sh-block {   subshell (
  [Concurrency]   pipe   |   X |&
                  ampersand &
  [Redirects]     redir-file  >  >>  >|  <  <>   X &>
                  redir-desc  >&  <&
                  here-doc    <<  <<-  <<<
  [Other Command] dparen ((   time   X coproc   X select

Assignments and Expressions (osh-assign)

  [Literals]      sh-array      array=(a b c)   array[1]=B   "${a[@]}"
                  sh-assoc      assoc=(['a']=1 ['b']=2)   assoc['x']=b
  [Operators]     sh-assign     str='xyz'
                  sh-append     str+='abc'
  [Builtins]      local   readonly   export   unset   shift
                  declare   typeset   X let

Word Language (word-lang)

  [Quotes]        quotes        'abc'  $'\n'  "$var"
  [Substitutions] com-sub       $(command)   `command`   @(split command)
                  var-sub       ${var}   $0   $9   
                  arith-sub     $((1 + 2))
                  tilde-sub     ~/src
                  proc-sub      diff <(sort L.txt) <(sort R.txt)
  [Var Ops]       op-test       ${x:-default}  
                  op-strip      ${x%%suffix}  etc.
                  op-replace    ${x//y/z}
                  op-index      ${a[i+1}
                  op-slice      ${a[@]:0:1}
                  op-format     ${x@P}

Other Mini Languages (mini-lang)

  [Arithmetic]    arith-context Where legacy arithmetic is allowed
                  sh-numbers    0xFF  0755  etc.
                  sh-arith      1 + 2*3   a *= 2
                  sh-logical    !a && b
                  sh-bitwise    ~a ^ b
  [Boolean]       dbracket      [[ vs. the test builtin
                  bool-expr       [[ ! $x && $y || $z ]]
                                test ! $x -a $y -o $z
                  bool-infix    [[ $a -nt $b ]]  [[ $x == $y ]]
                  bool-path     [[ -d /etc ]]
                  bool-str      [[ -z '' ]]
                  bool-other    [[ -o errexit ]]
  [Patterns]      glob          *.py
                  extglob       ,(*.py|*.sh)
                  regex         [[ foo =~ [a-z]+ ]]
  [Other Sublang] braces        {alice,bob}@example.com
                  histsub       !$  !!  !n
                  char-escapes  \t  \c  \x00  \u03bc

Builtin Commands (builtin-cmd)

  [I/O]           read   echo   printf
                  readarray   mapfile
  [Run Code]      source .   eval   trap
  [Set Options]   set   shopt
  [Working Dir]   cd   pwd   pushd   popd   dirs
  [Completion]    complete   compgen   compopt   compadjust   compexport
  [Shell Process] exec   X logout 
                  umask   X ulimit   times
  [Child Process] jobs   wait   ampersand &
                  fg   X bg   X kill   X disown 
  [External]      test [   getopts
  [Introspection] help   hash   type   X caller
  [Word Lookup]   command   builtin
  [Interactive]   alias   unalias   history   X fc   X bind
X [Unsupported]   enable

Global Shell Options (option)

  [Errors]        nounset   pipefail   errexit   inherit_errexit
  [Globbing]      noglob   nullglob   failglob   dashglob
  [Debugging]     xtrace   X verbose   X extdebug
  [Interactive]   emacs   vi
  [Other Option]  X noclobber

Special Variables (special-var)

  [Shell Options] SHELLOPTS   X BASHOPTS
  [Other Env]     HOME   PATH
  [POSIX Special] $@  $*  $#     $?  $-     $$  $!   $0  $9
  [Platform]      HOSTNAME   OSTYPE
  [Call Stack]    @BASH_SOURCE   @FUNCNAME   @BASH_LINENO   
                  X @BASH_ARGV   X @BASH_ARGC
  [Tracing]       LINENO   SOURCE_NAME
  [Process State] X BASHPID   X PPID   UID   EUID   
X [Shell State]   BASH_CMDS   @DIRSTACK
                  X COMP_TYPE   COMP_ARGV
  [History]       HISTFILE
  [cd]            PWD   OLDPWD   X CDPATH
  [getopts]       OPTIND   OPTARG   X OPTERR
  [read]          REPLY
  [Functions]     X RANDOM   X SECONDS
  [Shell Vars]    IFS   X LANG

Plugins and Hooks (plugin)

  [Signals]       SIGTERM   X SIGINT   X SIGABRT   SIG...
  [Traps]         EXIT   X ERR   X DEBUG   X RETURN
  [Words]         PS1   X PS2   X PS3   PS4
  [Completion]    complete
  [Other Plugin]  X command_not_found   PROMPT_COMMAND

Generated on Wed, 13 Sep 2023 01:45:04 -0400