cat filelist.txt | xtool -dd -I{} cp {} /dest/
# Standard way cat list | awk '!seen[$0]++' | xargs rm xtool -dd deduplication option
sort -u input.txt | xargs command
In a typical command-line string, the -dd option is used alongside other precompression methods: xtool precomp -mzlib -mprecomp -dd input_folder output_file : Directs Xtool to process zlib-compressed data. cat filelist