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| 2 | Builtin Commands <a class="group-link" href="chap-builtin-cmd.html">builtin-cmd</a>
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| 3 |
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| 4 |
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| 5 | [Memory] cmd/append Add elements to end of array
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| 6 | pp asdl cell X gc-stats line proc
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| 7 | [Handle Errors] error error 'failed' (status=2)
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| 8 | try Run with errexit, set _error
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| 9 | failed Test if _error.code !== 0
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| 10 | boolstatus Enforce 0 or 1 exit status
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| 11 | [Shell State] ysh-cd ysh-shopt compatible, and takes a block
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| 12 | shvar Temporary modify global settings
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| 13 | ctx Share and update a temporary "context"
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| 14 | push-registers Save registers like $?, PIPESTATUS
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| 15 | [Modules] runproc Run a proc; use as main entry point
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| 16 | module guard against duplicate 'source'
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| 17 | is-main false when sourcing a file
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| 18 | use change first word lookup
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| 19 | [I/O] ysh-read flags --all, -0
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| 20 | ysh-echo no -e -n with simple_echo
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| 21 | write Like echo, with --, --sep, --end
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| 22 | fork forkwait Replace & and (), and takes a block
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| 23 | fopen Open multiple streams, takes a block
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| 24 | X dbg Only thing that can be used in funcs
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| 25 | X log X die Common functions (polyfill)
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| 26 | [Hay Config] hay haynode For DSLs and config files
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| 27 | [Completion] compadjust compexport
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| 28 | [Data Formats] json read write
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| 29 | json8 read write
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| 30 | X [Lines] slurp-by combine adjacent lines into cells
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| 31 | X [Awk] each-line --j8 --max-jobs (Str, Template, Block) - xargs
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| 32 | each-row --max-jobs (Str, Template, Block) - xargs
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| 33 | split-by (str=\n, ifs=':', pattern=/s+/)
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| 34 | if-split-by
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| 35 | chop alias for split-by (pattern=/s+/)
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| 36 | must-match (/ <capture d+> </capture w+> /)
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| 37 | if-match
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| 38 | X [Table Create] table --by-row --by-col (&place); construct/parse a table
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| 39 | table/cols cols name age - cols name:Str age:Int
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| 40 | types type Str Int
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| 41 | attr attr units - secs
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| 42 | row emit row
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| 43 | table cat concatenate TSV8
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| 44 | table align to ssv8
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| 45 | table tabify to tsv8
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| 46 | table header (cols = :|name age|, types = :|Str Int|, units = :|- secs|)
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| 47 | table slice e.g. slice (1, -1) slice (5, 7)
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| 48 | table to-tsv lose type info, and error on \t in cells
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| 49 | X [Table Ops] where subset of rows; dplyr filter()
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| 50 | pick subset of columns ('select' taken by shell)
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| 51 | mutate transmute [average = count / sum] - drop the ones that are used?
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| 52 | rename (bytes='bytes', path='filename')
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| 53 | group-by add a column with a group ID [ext]
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| 54 | sort-by sort by columns; dplyr arrange() [ext]
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| 55 | summary count, sum, histogram, any, all, reduce(), etc. [ext]
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| 56 | [Args Parser] parser Parse command line arguments
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| 57 | flag
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| 58 | arg
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| 59 | rest
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| 60 | parseArgs()
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| 61 | X [Testing] describe Test harness
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| 62 | assert takes an expression
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