[cups-devel] [UNKN] STR #4578: lpadmin silently ignores -o when creating .ppd

[Yuexiao Guo]

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[STR New]

It appears that when using lpadmin to generate a .ppd that was not there
before with -m, options provided with -o are not applied. When using
lpadmin to modify a preexisting .ppd, options provided with -o are applied.

There is no output to indicate that this is what is occurring, and nothing
in the manpage for lpadmin that would clue users in.

We noticed this on an hour-long bughunt through our mass-deployed printer
setup scripts to identify what was causing a printer to default to using
the wrong paper size. We would run the script (which first removed all the
.ppds), observe that the generated .ppd was wrong, then run the same
lpadmin command on the command line (which was now modifying the .ppd
created by the earlier run in the script), then observe that the generated
.ppd was now correct. 

For reference, the command used was:

/usr/sbin/lpadmin -p [name] -E -m MCS/[name].ppd -D "[description]" -L
"[location]" -v "[address]" -o PageSize=Letter -o HPOption_Duplexer=True -o
printer-is-shared=true -u allow:root,remroot

Where MCS/[name].ppd had the correct PageSize setting, different from the
.ppd generated in /etc/cups/ppd/ by the above command. Running the same
command again corrected the file.

Link: https://www.cups.org/str.php?L4578
Version: 2.0-current
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