rrdupdate -V (return code: 1)
RRDtool 1.5.5 Copyright by Tobi Oetiker
Usage: rrdupdate <filename>
[--template|-t ds-name[:ds-name]...]
[--skip-past-updates]
time|N:value[:value...]
at-time@value[:value...]
[ time:value[:value...] ..]
ERROR: unknown option '--version'
rrdupdate --help (return code: 1)
RRDtool 1.5.5 Copyright by Tobi Oetiker
Usage: rrdupdate <filename>
[--template|-t ds-name[:ds-name]...]
[--skip-past-updates]
time|N:value[:value...]
at-time@value[:value...]
[ time:value[:value...] ..]
ERROR: unknown option '--help'