sys

Text functions: sys
Instructions: syssys <progName>
Text functions: sys
Instructions: syssys <progName>, <value> [, ...]
Text functions: sys
Instructions: syssys <progName>, <list>

Execute another program.

Flow control: if … then
Flow control: try … thenThe Data Types: Text
Item selector "[]": Text
Glossary: text, text_valtext written to Constants: stderrstderr is immediately written to vipsi's Constants: stderrstderr.
Constants: stdinstdin is also left connected to vipsi's Constants: stdinstdin.

Flow control: if … then
Flow control: try … thenThe Data Types: Text
Item selector "[]": Text
Glossary: text, text_valtext written to Constants: stdoutstdout is written to vipsi's Constants: stdoutstdout after Flow control: if … then
Flow control: try … thenthe command completes. List functions: thisThis is slightly weird, because List functions: thisthis way output to Constants: stdoutstdout Operators: Boolean And with Variable "&&="
Operators: Bitwise And with Variable "&="
Operators: Bitwise And "&"
Operators: Boolean And "&&"and Constants: stderrstderr are Operators: Bitwise Not "~"
Operators: Boolean Negation "!"not kept in order Operators: Boolean And with Variable "&&="
Operators: Bitwise And with Variable "&="
Operators: Bitwise And "&"
Operators: Boolean And "&&"and may be reviewed some time.

Flow control: if … then
Flow control: try … thenThe program Vipsi command syntax: Identifiers (names)
Identifiers, names
Operators: Make Identifier "@"
Text functions: name
Glossary: Name, Identifiername, a Glossary: text, text_valtext value, may be given as an absolute Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or relative path Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or only as Flow control: if … then
Flow control: try … thenthe command Vipsi command syntax: Identifiers (names)
Identifiers, names
Operators: Make Identifier "@"
Text functions: name
Glossary: Name, Identifiername itself, Flow control: if … thenif it can be found traversing Flow control: if … then
Flow control: try … thenthe PATH environment Glossary: Variable, var_refvariable. In essence List functions: thisthis means: you can give Flow control: if … then
Flow control: try … thenthe program Vipsi command syntax: Identifiers (names)
Identifiers, names
Operators: Make Identifier "@"
Text functions: name
Glossary: Name, Identifiername as you would type it on Flow control: if … then
Flow control: try … thenthe command line.

Vipsi command syntax: Arguments
Glossary: ArgumentsArguments may be either a virtually unlimited Data Types: Lists and arrays
Item selector "[]": Lists
Glossary: list, list_vallist of Vipsi command syntax: Arguments
Glossary: Argumentsarguments Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or a Data Types: Lists and arrays
Item selector "[]": Lists
Glossary: list, list_vallist as a single Vipsi command syntax: Arguments
Glossary: Argumentsargument, Flow control: if … then
Flow control: try … thenthen Flow control: if … then
Flow control: try … thenthe Data Types: Lists and arrays
Item selector "[]": Lists
Glossary: list, list_vallist items are taken as Vipsi command syntax: Arguments
Glossary: Argumentsarguments for Flow control: if … then
Flow control: try … thenthe program.

Any Vipsi command syntax: Arguments
Glossary: Argumentsargument is converted Text functions: stringto text before Flow control: if … then
Flow control: try … thenthe external program is called, just because only Data Types: Text
Item selector "[]": Text
Glossary: text, text_valtexts can be passed to other programs.

Operators: Bitwise Not "~"
Operators: Boolean Negation "!"Note, that you cannot pass a Data Types: Lists and arrays
Item selector "[]": Lists
Glossary: list, list_vallist as a single Vipsi command syntax: Arguments
Glossary: Argumentsargument, because Flow control: if … then
Flow control: try … thenthen Flow control: if … then
Flow control: try … thenthe Data Types: Lists and arrays
Item selector "[]": Lists
Glossary: list, list_vallist items would be taken on behalf, as said above.

Also Operators: Bitwise Not "~"
Operators: Boolean Negation "!"note, that Operators: Multiply "*"wildcard patterns are Operators: Bitwise Not "~"
Operators: Boolean Negation "!"not expanded!

Text functions: sys
Instructions: syssys "ls"
Text functions: sys
Instructions: syssys "ls", "-lR"
Text functions: sys
Instructions: syssys "rm", "anton", "berta"
Text functions: sys
Instructions: syssys "rm", { "anton", "berta" }

For experts:

sys: How to pass a single listHow to pass a single Data Types: Lists and arrays
Item selector "[]": Lists
Glossary: list, list_vallist.

Text functions: sys
Instructions: syssys "echo", { { "a", "Data Types: Lists and arrays
Item selector "[]": Lists
Glossary: list, list_vallist" } }
Text functions: sys
Instructions: syssys "echo", Data Types: Text
Text functions: stringstring( { "a", "Data Types: Lists and arrays
Item selector "[]": Lists
Glossary: list, list_vallist" } )

There is also a Vipsi command syntax: Functions
Functions
Glossary: Functionfunction Text functions: sys
Instructions: syssys which Flow control: returnreturns Flow control: if … then
Flow control: try … thenthe Data Types: Text
Item selector "[]": Text
Glossary: text, text_valtext written to Constants: stdoutstdout.