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Full Discussion: Help with extract using awk
Top Forums Shell Programming and Scripting Help with extract using awk Post 302424186 by methyl on Monday 24th of May 2010 12:58:38 PM
Old 05-24-2010
Quote:
#!/bin/ksh

ls -l *\.edf| while read -r a a a a s a a a n
do
echo "[$s] [$n]"
done
On behalf of vgersh99. The "while read -r" statement reads each matching line from the "ls -l *\.edf" statement in turn. It places the results into environment variables called $a, $s, $n . $a is a variable to use unwanted fields, $s is the file size, $n is the file name. The clever bit of the script is that $n contains the whole filename whether or not it contains spaces or special characters. This is because the last field in a "read" statement is filled with any remaining characters from the input line. See "man read".
The square brackets in the output echo are not special syntax, they just help to show where each field starts and stops when testing the script.

Note the backslash in "ls -l *\.edf". This is good practice because unix is not MSDOS and a fullstop in a filename is just another character but it can have special meaning in a regular expression (which this isn't).
 

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LEARN ABOUT DEBIAN

tau2vtf

TAU2VTF(1)							       Tools								TAU2VTF(1)

NAME

       tau2vtf - convert TAU tracefiles to vampir tracefiles

SYNOPSIS

       tau2vtf [-nomessage] [-v] [[-a] [-fa]] {tau_tracefile} {tau_eventfile} {vtf_tracefile}

DESCRIPTION

       This program is generated when TAU is configured with the -vtf=<vtf_dir> option.

       The tau2vtf trace converter takes a single tau_tracefile (*.trc) and tau_eventfile (*.edf) and produces a corresponding vtf_tracefile
       (*.vtf). The input files and output file must be specified in that order. Multi-file TAU traces must be merged before conversion.

       The default output file format is VTF3 binary. If the output filename is given as the .vpt.gz type, rather than .vpt, the output file will
       be gzipped. There are two additional output format options. The command line argument '-a' produces the vtf file output in ASCII VTF3
       format. The command line argument '-fa' produces the vtf file output in the FAST ASCII VTF3 format. Note that these arguments are mutually
       exclusive.

OPTIONS

       -nomessage Suppresses printing of message information in the trace.

       -v Verbose mode sends trace event descriptions to the standard output as they are converted.

       -a Print the vtf file output in the human-readable VTF3 ASCII format

       -fa Print the vtf file in the simplified human-readable FAST ASCII VTF3 format

EXAMPLES

       The program must be run with the tau trace, tau event and vtf output files specified in the command line in that order. Any additional
       arguments follow. The following will produce a VTF, app.vpt, from the TAU trace and event files merged.trc and tau.edf trace file:

       tau2vtf merged.trc tau.edf app.vpt

       The following will convert merged.trc and tau.edf to a gzipped FAST ASCII vampir tracefile app.vpt.gz, with message events omitted:

       tau2vtf merged.trc tau.edf app.vpt.gz -nomessage -fa

SEE ALSO

       vtf2profile(1), tau2profile(1), tau_merge(1), tau_convert(1)

								    12/22/2005								TAU2VTF(1)
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