11-07-2013
Thanks for the reply Ajay.
But here I don't fetch values based on column position ($2==123). Instead i want to fetch value by the header name .
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cat sample.csv
ID,Name,no
1,AAA,1
2,BBB,1
3,AAA,1
4,BBB,1
cut -d',' -f2 sample.csv | sort | uniq
this gives only the 2nd column values
Name
AAA
BBB
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LEARN ABOUT DEBIAN
canto-fetch
Canto-fetch(1) Canto-fetch Canto-fetch(1)
NAME
Canto-fetch - A quiet feed fetcher.
DESCRIPTION
Canto-fetch is designed to be run through a cron job, every minute. Every time it's run, it checks the timestamp on each index file and
updates the feed, if necessary. The format it produces is a simple UTF-8 encoded, NULL delimited text file on disk, readable by the canto
client.
GETTING STARTED
Canto-fetch is meant to be used through a cron, adding this line to your crontab will cause canto-fetch to poll every minute.
* * * * * canto-fetch
Alternatively, if you're unable/uncomfortable using cron, canto-fetch has a background daemon mode so you can invoke it in your X session
scripts. Just use
canto-fetch -b
USAGE
These options correspond to options to the canto client.
-h / --help
Print usage and quit.
-v / --version
Print version and quit.
-V / --verbose
Output status while updating.
-d / --daemon
Continue to check for updates every minute. Mostly for debugging with -V, users probably want -b to background.
-b / --background
Detach from the terminal (implies -d)
-f / --force
Force updates on all feeds, ignoring timestamps.
-s / --sysfp
Use feedparser on system instead of builtin copy.
-C / --conf [PATH]
Set path to configuration file (default: ~/.canto/conf)
-F / --fdir [PATH]
Set path to feed directory (default: ~/.canto/feeds/)
-L / --log [PATH]
Set path to log (default: ~/.canto/fetchlog)
-S / --sdir [PATH]
Set the path to execurl scripts (default ~/.canto/scripts/)
FILES
~/.canto/fetchlog
Canto-fetch log file.
~/.canto/feeds/
This is the directory where canto-fetch records stories.
BUGS
None known, but it's not outside of the realm of possibility =P.
HOMEPAGE
http://codezen.org/canto
AUTHOR
Jack Miller <jack@codezen.org>
Version 0.7.10 27 July 2010 Canto-fetch(1)