Hello, I intend to convert some files to the space-separated format and thus input the following command in the Terminal using Ubuntu,
Nico@frs3623:~/Documents/Control$ *grep -d ">" SRR21807.fasta | sort | uniq -c > SRR21807.txt* Unfortunately, the returning message is, grep: invalid argument ‘>’ for ‘--directories’ valid arguments are: - ‘read’ - ‘recurse’ - ‘skip’ Usage: grep [OPTION]... PATTERN [FILE]... Try 'grep --help' for more information. yangliu@frs3623:~/Documents/Control$ grep -d ">" SRR21807.fasta | sort | uniq -c > SRR21807.txt grep: invalid argument ‘>’ for ‘--directories’ Valid arguments are: - ‘read’ - ‘recurse’ - ‘skip’ Usage: grep [OPTION]... PATTERN [FILE]... Try 'grep --help' for more information. Could you figure out what incurred this error and how to fix it via modifying my command? I appreciate your help. Regards, Nico
