Try to get this paper for detailed usage. otherwise spend some time reading http://www.repeatmasker.org/webrepeatmaskerhelp.html
The only argument you need is the genome:
There are other options to refine the masking to one species, repeat type, or incorporate a custom repeat library (simply typing the name of the program will tell you the usage).
thanks for reply. while run the following command it is showing error. However I have current repbase lib.
./RepeatMasker -species arabidopsis dna_all.fa RepeatMasker version open-4.0.5 Search Engine: NCBI/RMBLAST [ error while loading shared libraries: libpcre.so.0: cannot open shared object file: No such file or directory ] Master RepeatMasker Database: /home/sekhwalm/Downloads/RepeatMasker/Libraries/RepeatMaskerLib.embl ( Complete Database: 20150807 ) Building general libraries in: /home/sekhwalm/Downloads/RepeatMasker/Libraries/20150807/general RepeatMasker::createLib(): Error invoking /usr/local/bin/RMBlast/bin/makeblastdb on file /home/sekhwalm/Downloads/RepeatMasker/Libraries/20150807/general/at.lib.