OILS / doc / ref / toc-osh.md View on Github | oilshell.org

218 lines, 187 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="front-end">
76 Front End <a class="group-link" href="chap-front-end.html">front-end</a>
77</h2>
78
79```chapter-links-front-end
80 [Usage] oils-usage osh-usage config
81 startup line-editing exit-codes
82 [Lexing] comment # line-continuation \ ascii-whitespace [ \t\r\n]
83```
84
85<h2 id="cmd-lang">
86 Command Language <a class="group-link" href="chap-cmd-lang.html">cmd-lang</a>
87</h2>
88
89```chapter-links-cmd-lang
90 [Commands] simple-command semicolon ;
91 [Conditional] case if dbracket [[
92 true false colon :
93 bang ! and && or ||
94 [Iteration] while until for for-expr-sh ((
95 [Control Flow] break continue return exit
96 [Grouping] sh-func sh-block { subshell (
97 [Concurrency] pipe | X pipe-amp |& ampersand &
98 [Redirects] redir-file > >> >| < <> not impl: &>
99 redir-desc >& <&
100 here-doc << <<- <<<
101 [Other Command] dparen (( time X coproc X select
102```
103
104<h2 id="osh-assign">
105 Assignments and Expressions <a class="group-link" href="chap-osh-assign.html">osh-assign</a>
106</h2>
107
108```chapter-links-osh-assign
109 [Literals] sh-array array=(a b c) array[1]=B "${a[@]}"
110 sh-assoc assoc=(['a']=1 ['b']=2) assoc['x']=b
111 [Operators] sh-assign str='xyz'
112 sh-append str+='abc'
113 [Builtins] local readonly export unset shift
114 declare typeset X let
115```
116
117<h2 id="word-lang">
118 Word Language <a class="group-link" href="chap-word-lang.html">word-lang</a>
119</h2>
120
121<!-- linkify_stop_col is 33 -->
122
123```chapter-links-word-lang_33
124 [Quotes] osh-string 'abc' $'line\n' "$var"
125 [Substitutions] command-sub $(command) `command`
126 var-sub ${var} $0 $9
127 arith-sub $((1 + 2))
128 tilde-sub ~/src
129 proc-sub diff <(sort L.txt) <(sort R.txt)
130 [Var Ops] op-test ${x:-default}
131 op-strip ${x%%suffix} etc.
132 op-replace ${x//y/z}
133 op-index ${a[i+1}
134 op-slice ${a[@]:0:1}
135 op-format ${x@P}
136```
137
138<h2 id="mini-lang">
139 Other Mini Languages <a class="group-link" href="chap-mini-lang.html">mini-lang</a>
140</h2>
141
142<!-- linkify_stop_col is 33 -->
143
144```chapter-links-mini-lang_33
145 [Arithmetic] arith-context Where legacy arithmetic is allowed
146 sh-numbers 0xFF 0755 etc.
147 sh-arith 1 + 2*3 a *= 2
148 sh-logical !a && b
149 sh-bitwise ~a ^ b
150 [Boolean] bool-expr [[ ! $x && $y || $z ]]
151 test ! $x -a $y -o $z
152 bool-infix [[ $a -nt $b ]] [[ $x == $y ]]
153 bool-path [[ -d /etc ]]
154 bool-str [[ -z '' ]]
155 bool-other [[ -o errexit ]]
156 [Patterns] glob-pat *.py
157 extglob ,(*.py|*.sh)
158 regex [[ foo =~ [a-z]+ ]]
159 [Other Sublang] braces {alice,bob}@example.com
160 histsub !$ !! !n
161 char-escapes \t \c \x00 \u03bc
162```
163
164<h2 id="option">
165 Global Shell Options <a class="group-link" href="chap-option.html">option</a>
166</h2>
167
168<!-- linkify_stop_col is 20 since we only want section links -->
169
170```chapter-links-option_22
171 [Errors] nounset -u errexit -e inherit_errexit pipefail
172 [Globbing] noglob -f nullglob failglob X dotglob
173 dashglob (true)
174 [Debugging] xtrace X verbose X extdebug
175 [Interactive] emacs vi
176 [Other POSIX] X noclobber
177 [Compat] eval_unsafe_arith ignore_flags_not_impl
178```
179
180<h2 id="special-var">
181 Special Variables <a class="group-link" href="chap-special-var.html">special-var</a>
182</h2>
183
184```chapter-links-special-var
185 [POSIX Special] $@ $* $# $? $- $$ $! $0 $9
186 [Shell Vars] IFS X LANG X GLOBIGNORE
187 [Shell Options] SHELLOPTS X BASHOPTS
188 [Other Env] HOME PATH
189 [Other Special] BASH_REMATCH @PIPESTATUS
190 [Platform] HOSTNAME OSTYPE
191 [Call Stack] @BASH_SOURCE @FUNCNAME @BASH_LINENO
192 X @BASH_ARGV X @BASH_ARGC
193 [Tracing] LINENO
194 [Process State] UID EUID PPID X BASHPID
195X [Process Stack] BASH_SUBSHELL SHLVL
196X [Shell State] BASH_CMDS @DIRSTACK
197 [Completion] @COMP_WORDS COMP_CWORD COMP_LINE COMP_POINT
198 COMP_WORDBREAKS @COMPREPLY X COMP_KEY
199 X COMP_TYPE COMP_ARGV
200 [History] HISTFILE
201 [cd] PWD OLDPWD X CDPATH
202 [getopts] OPTIND OPTARG X OPTERR
203 [read] REPLY
204 [Functions] X RANDOM SECONDS
205```
206
207<h2 id="plugin">
208 Plugins and Hooks <a class="group-link" href="chap-plugin.html">plugin</a>
209</h2>
210
211```chapter-links-plugin
212 [Signals] SIGTERM SIGINT SIGQUIT
213 SIGTTIN SIGTTOU SIGWINCH
214 [Traps] DEBUG ERR EXIT X RETURN
215 [Words] PS1 X PS2 X PS3 PS4
216 [Completion] complete
217 [Other Plugin] PROMPT_COMMAND X command_not_found
218```