fastail - print last sequence records on input
fastail [OPTION]... [MULTIFASTA-FILE]...
fastail takes sequence or alignment data as input, and outputs the last n sequence records of each input file or, if no files are specified, of the standard input. fastail by default prints the last 10 sequence records.
Options specific to fastail: -n, --number=<integer> the number of sequence records to print -a, --annotate annotate sequence records with source filename in descriptions -j, --join=<string> use <string> to join annotation in descriptions
Options general to FAST: -h, --help print a brief help message --man print full documentation --version print version -l, --log create/append to logfile -L, --logname=<string> use logfile name <string> -C, --comment=<string> save comment <string> to log --format=<format> use alternative format for input --moltype=<[dna|rna|protein]> specify input sequence type -q, --fastq use fastq format as input and output
fastail is part of FAST, the FAST Analysis of Sequences Toolbox, based on Bioperl. Most core FAST utilities expect input and return output in multifasta format. Input can occur in one or more files or on STDIN. Output occurs to STDOUT. The FAST utility fasconvert can reformat other formats to and from multifasta.
The number of sequence records to print. Must be a positive integer. Defaults to 10.
Annotate sequence descriptions with file names if and when input is being processed from files.
Use [string] to append filenames in descriptions.
Print a brief help message and exit.
Print the manual page and exit.
Print version information and exit.
Creates, or appends to, a generic FAST logfile in the current working directory. The logfile records date/time of execution, full command with options and arguments, and an optional comment.
Use [string] as the name of the logfile. Default is "FAST.log.txt".
Include comment [string] in logfile. No comment is saved by default.
Use alternative format for input. See man page for "fasconvert" for allowed formats. This is for convenience; the FAST tools are designed to exchange data in Fasta format, and "fasta" is the default format for this tool.
Use fastq format as input and output.
Print the last 10 sequences:
cat data.fas | fastail > data.dna.fas
Print the last 5 sequences:
cat data.fas | fastail -n 5 > data.dna.fas
Print the last 5 sequences with file name added to the description:
cat data.fas | faslast -v -n 5 > data.dna.fas
Print the last 5 sequences without file name added to the description:
fastail -q -n 5 data.fas data2.fas > data.dna.fas
man FAST
perldoc FAST
Introduction and cookbook for FAST
If you use FAST, please cite Lawrence et al. (2015). FAST: FAST Analysis of Sequences Toolbox. and Bioperl Stajich et al..
To install FAST, copy and paste the appropriate command in to your terminal.
cpanm
cpanm FAST
CPAN shell
perl -MCPAN -e shell install FAST
For more information on module installation, please visit the detailed CPAN module installation guide.