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Full Discussion: If statement
Top Forums Shell Programming and Scripting If statement Post 302076922 by dreams5617 on Friday 16th of June 2006 03:34:40 PM
Old 06-16-2006
Error If statement

Hi,

I have a statement in shell script which i am writing below:

if [[ -a $OUTFILE ]]
then
.....

What is the meaning of -a option in files, meaning of the statement in the if condition [[ -a $OUTFILE ]] means.

Thanks
 

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FASTQ_QUALITY_TRIMMER(1)					   User Commands					  FASTQ_QUALITY_TRIMMER(1)

NAME
fastq_quality_trimmer - Filters sequences based on quality DESCRIPTION
usage: fastq_quality_trimmer [-h] [-v] [-t N] [-l N] [-z] [-i INFILE] [-o OUTFILE] Part of FASTX Toolkit 0.0.13.1 by A. Gordon (gor- don@cshl.edu) [-h] = This helpful help screen. [-t N] = Quality threshold - nucleotides with lower quality will be trimmed (from the end of the sequence). [-l N] = Minimum length - sequences shorter than this (after trimming) will be discarded. Default = 0 = no minimum length. [-z] = Compress output with GZIP. [-i INFILE] = FASTQ input file. default is STDIN. [-o OUTFILE] = FASTQ output file. default is STDOUT. [-v] = Verbose - report number of sequences. If [-o] is specified, report will be printed to STDOUT. If [-o] is not specified (and output goes to STDOUT), report will be printed to STDERR. SEE ALSO
The quality of this automatically generated manpage might be insufficient. It is suggested to visit http://hannonlab.cshl.edu/fastx_toolkit/commandline.html to get a better layout as well as an overview about connected FASTX tools. fastq_quality_trimmer 0.0.13.1 April 2012 FASTQ_QUALITY_TRIMMER(1)
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