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232 lines, 199 significant
1---
2title: OSH Table of Contents
3all_docs_url: ..
4css_files: ../../web/base.css ../../web/manual.css ../../web/ref-index.css
5preserve_anchor_case: yes
6---
7
8<div class="doc-ref-header">
9
10[Oils Reference](index.html) &mdash;
11**OSH Table of Contents** | [YSH](toc-ysh.html) | [Data Notation](toc-data.html)
12
13</div>
14
15[OSH]($xref) is a POSIX- and [bash]($xref)-compatible shell.
16
17<!--
18<div class="custom-toc">
19
20[OSH Types](#type-method) <br/>
21[Builtin Commands](#builtin-cmd) <br/>
22[Front End](#front-end) <br/>
23[Command Language](#cmd-lang) <br/>
24[OSH Assignment](#osh-assign) <br/>
25[Word Language](#word-lang) <br/>
26[Mini Languages](#mini-lang) <br/>
27[Shell Options](#option) <br/>
28[Special Variables](#special-var) <br/>
29[Plugins and Hooks](#plugin) <br/>
30
31[type-method](#type-method) &nbsp;
32[builtin-cmd](#builtin-cmd) &nbsp;
33[front-end](#front-end) &nbsp;
34[cmd-lang](#cmd-lang) &nbsp;
35[osh-assign](#osh-assign) &nbsp;
36[word-lang](#word-lang) &nbsp;
37[mini-lang](#mini-lang) &nbsp;
38[option](#option) &nbsp;
39[special-var](#special-var) &nbsp;
40[plugin](#plugin)
41
42</div>
43-->
44
45<h2 id="type-method">
46 OSH Types <a class="group-link" href="chap-type-method.html">type-method</a>
47</h2>
48
49```chapter-links-type-method
50 [OSH] BashArray BashAssoc
51```
52
53<h2 id="builtin-cmd">
54 Builtin Commands <a class="group-link" href="chap-builtin-cmd.html">builtin-cmd</a>
55</h2>
56
57```chapter-links-builtin-cmd
58 [I/O] read echo printf
59 readarray mapfile
60 [Run Code] source . eval trap
61 [Set Options] set shopt
62 [Working Dir] cd pwd pushd popd dirs
63 [Completion] complete compgen compopt compadjust compexport
64 [Shell Process] exec X logout
65 umask ulimit times
66 [Child Process] jobs wait
67 fg X bg X kill X disown
68 [External] test [ getopts
69 [Introspection] help hash cmd/type X caller
70 [Word Lookup] command builtin
71 [Interactive] alias unalias history X fc X bind
72X [Unsupported] enable
73```
74
75<h2 id="stdlib">
76 Standard Library <a class="group-link" href="chap-stdlib.html">stdlib</a>
77</h2>
78
79```chapter-links-stdlib
80 [two] log die
81 [no-quotes] nq-assert nq-run
82 nq-capture nq-capture-2
83 nq-redir nq-redir-2
84 [bash-strict]
85 [task-five]
86```
87
88<h2 id="front-end">
89 Front End <a class="group-link" href="chap-front-end.html">front-end</a>
90</h2>
91
92```chapter-links-front-end
93 [Usage] oils-usage osh-usage config
94 startup line-editing exit-codes
95 [Lexing] comment # line-continuation \ ascii-whitespace [ \t\r\n]
96```
97
98<h2 id="cmd-lang">
99 Command Language <a class="group-link" href="chap-cmd-lang.html">cmd-lang</a>
100</h2>
101
102```chapter-links-cmd-lang
103 [Commands] simple-command semicolon ;
104 [Conditional] case if dbracket [[
105 true false colon :
106 bang ! and && or ||
107 [Iteration] while until for for-expr-sh ((
108 [Control Flow] break continue return exit
109 [Grouping] sh-func sh-block { subshell (
110 [Concurrency] pipe | X pipe-amp |& ampersand &
111 [Redirects] redir-file > >> >| < <> not impl: &>
112 redir-desc >& <&
113 here-doc << <<- <<<
114 [Other Command] dparen (( time X coproc X select
115```
116
117<h2 id="osh-assign">
118 Assignments and Expressions <a class="group-link" href="chap-osh-assign.html">osh-assign</a>
119</h2>
120
121```chapter-links-osh-assign
122 [Literals] sh-array array=(a b c) array[1]=B "${a[@]}"
123 sh-assoc assoc=(['a']=1 ['b']=2) assoc['x']=b
124 [Operators] sh-assign str='xyz'
125 sh-append str+='abc'
126 [Builtins] local readonly export unset shift
127 declare typeset X let
128```
129
130<h2 id="word-lang">
131 Word Language <a class="group-link" href="chap-word-lang.html">word-lang</a>
132</h2>
133
134<!-- linkify_stop_col is 33 -->
135
136```chapter-links-word-lang_33
137 [Quotes] osh-string 'abc' $'line\n' "$var"
138 [Substitutions] command-sub $(command) `command`
139 var-sub ${var} $0 $9
140 arith-sub $((1 + 2))
141 tilde-sub ~/src
142 proc-sub diff <(sort L.txt) <(sort R.txt)
143 [Var Ops] op-test ${x:-default}
144 op-strip ${x%%suffix} etc.
145 op-replace ${x//y/z}
146 op-index ${a[i+1}
147 op-slice ${a[@]:0:1}
148 op-format ${x@P}
149```
150
151<h2 id="mini-lang">
152 Other Mini Languages <a class="group-link" href="chap-mini-lang.html">mini-lang</a>
153</h2>
154
155<!-- linkify_stop_col is 33 -->
156
157```chapter-links-mini-lang_33
158 [Arithmetic] arith-context Where legacy arithmetic is allowed
159 sh-numbers 0xFF 0755 etc.
160 sh-arith 1 + 2*3 a *= 2
161 sh-logical !a && b
162 sh-bitwise ~a ^ b
163 [Boolean] bool-expr [[ ! $x && $y || $z ]]
164 test ! $x -a $y -o $z
165 bool-infix $a -nt $b $x == $y
166 bool-path -d /etc
167 bool-str -n foo -z ''
168 bool-other -o errexit -v name[index]
169 [Patterns] glob-pat *.py
170 extglob ,(*.py|*.sh)
171 regex [[ foo =~ [a-z]+ ]]
172 [Other Sublang] braces {alice,bob}@example.com
173 histsub !$ !! !n
174 char-escapes \t \c \x00 \u03bc
175```
176
177<h2 id="option">
178 Global Shell Options <a class="group-link" href="chap-option.html">option</a>
179</h2>
180
181<!-- linkify_stop_col is 20 since we only want section links -->
182
183```chapter-links-option_22
184 [Errors] nounset -u errexit -e inherit_errexit pipefail
185 [Globbing] noglob -f nullglob failglob X dotglob
186 dashglob (true)
187 [Debugging] xtrace X verbose X extdebug
188 [Interactive] emacs vi
189 [Other POSIX] X noclobber
190 [Compat] eval_unsafe_arith ignore_flags_not_impl
191```
192
193<h2 id="special-var">
194 Special Variables <a class="group-link" href="chap-special-var.html">special-var</a>
195</h2>
196
197```chapter-links-special-var
198 [POSIX Special] $@ $* $# $? $- $$ $! $0 $9
199 [Shell Vars] IFS X LANG X GLOBIGNORE
200 [Shell Options] SHELLOPTS X BASHOPTS
201 [Other Env] HOME PATH
202 [Other Special] BASH_REMATCH @PIPESTATUS
203 [Platform] HOSTNAME OSTYPE
204 [Call Stack] @BASH_SOURCE @FUNCNAME @BASH_LINENO
205 X @BASH_ARGV X @BASH_ARGC
206 [Tracing] LINENO
207 [Process State] UID EUID PPID X BASHPID
208X [Process Stack] BASH_SUBSHELL SHLVL
209X [Shell State] BASH_CMDS @DIRSTACK
210 [Completion] @COMP_WORDS COMP_CWORD COMP_LINE COMP_POINT
211 COMP_WORDBREAKS @COMPREPLY X COMP_KEY
212 X COMP_TYPE COMP_ARGV
213 [History] HISTFILE
214 [cd] PWD OLDPWD X CDPATH
215 [getopts] OPTIND OPTARG X OPTERR
216 [read] REPLY
217 [Functions] X RANDOM SECONDS
218 [Oils VM] OILS_VERSION LIB_OSH
219```
220
221<h2 id="plugin">
222 Plugins and Hooks <a class="group-link" href="chap-plugin.html">plugin</a>
223</h2>
224
225```chapter-links-plugin
226 [Signals] SIGTERM SIGINT SIGQUIT
227 SIGTTIN SIGTTOU SIGWINCH
228 [Traps] DEBUG ERR EXIT X RETURN
229 [Words] PS1 X PS2 X PS3 PS4
230 [Completion] complete
231 [Other Plugin] PROMPT_COMMAND X command_not_found
232```