The DISPLAY command writes messages to a specified destination.
where:
Syntax Element |
Description |
’text’ |
Text to be written to the specified output destination |
fileid |
Data source of the external system The external system DD (or similar) statement specifies a file: If the path name contains single or double quotation marks, it should be enclosed in either single or double quotation marks. |
Table 28 describes the things to consider when using the DISPLAY command.
Topic |
Usage Notes |
Conflicting Write Operations on Network‑attached Systems |
On network‑attached client systems, if the same file is specified to redirect stdout as the file in a DISPLAY command, the results may be incomplete due to conflicting write operations to the same file. |
Displaying Apostrophes in the Text String |
To display an apostrophe within the text string, use two consecutive apostrophes (single quotes) to distinguish it from both the single quotes enclosing the string and a regular double‑quote character. |
Specifying the System Console/Standard Output Device |
The asterisk (*) character can be used as the fileid specification to direct the display messages to the system console/standard output (stdout) device. The system console is the: For more information about the display screen and standard output devices, see “File Requirements” on page 13. |
Utility Variables |
Utility variables are replaced by their values before text is displayed. This is done by preceding the variable name with an ampersand (&) character. To display the name of a utility variable, code two ampersand characters instead of one. |
z/OS fileid Usage Rules |
A DDNAME must obey the same construction rules as Teradata SQL column names except that: The DDNAME must obey the applicable rules of the external system and may reference a sequential or VSAM data set. If the DDNAME represents a data source on magnetic tape, the tape may be either labeled or nonlabeled, as supported by the operating system. |