Commands > FASTA/Q files
Gives a short summary report of the sequences in a FASTA
or FASTQ file. Handy for a frst check on what is in a new file. The report is
written to the console and can be saved to a text file using the -output option.
For very large file, the -secs option can be used to
stop scanning the file after a given number of seconds and report what has
been found so far.
File size 44.6M, 39.2k seqs, 21.5M letters and quals
Lengths min 267, low 539, med 544, hi 551, max 1326
Letter freqs C 31.1%,
T 27.0%, A 21.9%, G 20.0%, N 0.021%
0% masked (lower-case)
EE mean 3.4; min 0.2, low 1.4, med 2.3, hi 4.0, max 123.0
"EE" means expected errors.
Example command line
usearch -fastx_info huge_reads.fastq -secs 5 -output