output() Function (Python, SLAX, and XSLT)
Function introduced in Junos OS Release 7.6.
Support for the slax namespace http://xml.libslax.org/slax added in Junos OS Release 12.2.
Support for Python added in Junos OS Release 16.1R1 on QFX Series switches and ACX Series, MX Series, PTX Series, and T Series routers.
Support for Python added in Junos OS Release 17.1R1 on ACX500, ACX1000, ACX1100, ACX2000, ACX2100, ACX2200, and ACX4000 routers, and EX Series switches.
Support for Python added in Junos OS Release 17.3R1 on SRX1500, SRX4100, SRX4200, SRX5400, SRX5600, and SRX5800 devices and vSRX instances.
Support for Python added in Junos OS Release 18.3R1 on ACX5048 and ACX5096 routers.
Display one or more lines of output text, either on the CLI (when used in op scripts), or to the output file (when used in event scripts). The function can be called with either a single string argument or with multiple string arguments. Multiple arguments are concatenated into a single string. A newline terminates the output text.
output() function is not supported
in commit scripts. SLAX and XSLT commit scripts use the
<xnm:error> result tree elements to display text on the CLI, and Python commit
scripts use the
output() function displays the
text immediately rather than waiting until the conclusion of the script,
which differs from the SLAX and XSLT
<output> element. This makes it suitable for scripts where user interaction
is required or when status messages should be displayed during script
processing. In SLAX and XSLT scripts,
jcs:output() returns an empty node set, which can be ignored. Therefore, the
jcs:output() function is normally called with the
expr statement, rather than assigning its result to
The following escape characters are supported in the output text:
\\ –Backslash (as of Junos OS Release 10.2)
\r –Carriage Return
\" –Double quote (as of Junos OS Release 10.1R2)
\' – Single quote
Starting in Junos OS Release 10.2, the maximum length for output text is 10 KB, and longer strings are truncated to the supported length.
The prefix associated with the namespace URI should be defined in the prefix-to-namespace mapping in the style sheet.
string—Text that is output immediately to the CLI session.
expr jcs:output('The VPN is up.');
<xsl:value-of select="jcs:output('The VPN is up.')"/>
jcs.output('The VPN is up.')