The following seems to do the trick for me (even though I would have preferred to go with what Gustaf says):
exec -- /bin/sh -c "$cmd || exit 0" 2> /dev/null
Another way is to use ns_proxy as follows:
set handle [ns_proxy get exec_proxy]
set result ""
if { [catch { set result [$handle "exec {*}${cmd}"] } errmsg] } {
ns_log notice "proxy exec: errmsg=$errmsg"
}
ns_proxy release $handle
return $result
You might want to check OdfConverter for DOCX. I had used it with some success in MediaBox a long time ago. I remember having some issues with headless OpenOffice at the time (circa 2006-2007) and thus I was using the DocumentConvert.py --- it's kind of old but I have uploaded anyway here:
https://openacs.org/storage/?folder_id=2551358
