execExecute an external program
&reftitle.description;
stringfalseexecstringcommandarrayoutput&null;intresult_code&null;exec executes the given
command.
&reftitle.parameters;
command
The command that will be executed.
output
If the output argument is present, then the
specified array will be filled with every line of output from the
command. Trailing whitespace, such as \n, is not
included in this array. Note that if the array already contains some
elements, exec will append to the end of the array.
If you do not want the function to append elements, call
unset on the array before passing it to
exec.
result_code
If the result_code argument is present
along with the output argument, then the
return status of the executed command will be written to this
variable.
&reftitle.returnvalues;
The last line from the result of the command. If you need to execute a
command and have all the data from the command passed directly back without
any interference, use the passthru function.
Returns &false; on failure.
To get the output of the executed command, be sure to set and use the
output parameter.
&reftitle.examples;
An exec example
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&example.outputs.similar;
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&reftitle.notes;
&warn.escapeshell;
¬e.exec-bg;
¬e.exec-bypass-shell;
&reftitle.seealso;
systempassthruescapeshellcmdpcntl_execbacktick operator