Check whether the binary is present in the path using which binary or where binary.
- It is not always possible to know the name of all the binaries involved in invoking the filter command. A good approximation is to use the first word of the filtercommand and check if it is present in the path.
- For macro writers, we could provide a
check key to specify a list of binaries to check.
- Another approach is to simply provide a macro
\checkbinary and leave it up to the user to call that as part of filtersetup.
Check whether the binary is present in the path using
which binaryorwhere binary.checkkey to specify a list of binaries to check.\checkbinaryand leave it up to the user to call that as part offiltersetup.