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Shell Programming and Scripting
parse lines
Post 302601187 by Anjan1 on Thursday 23rd of February 2012 04:52:55 AM
02-23-2012
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inputfile:
A B C D
E F G H
1 2 3 4
-----------
I want to read these and put them into a variable:
file=../inputfile
col2line1=`cat $file | awk '{print $2}'`
how do i extract row 2's E,F,G,H or row 3's 1,2,3,4???
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LEARN ABOUT DEBIAN
sleep
SLEEP(3) Linux Programmer's Manual SLEEP(3) NAME
sleep - sleep for the specified number of seconds SYNOPSIS
#include <unistd.h> unsigned int sleep(unsigned int seconds); DESCRIPTION
sleep() makes the calling thread sleep until seconds seconds have elapsed or a signal arrives which is not ignored. RETURN VALUE
Zero if the requested time has elapsed, or the number of seconds left to sleep, if the call was interrupted by a signal handler. CONFORMING TO
POSIX.1-2001. BUGS
sleep() may be implemented using SIGALRM; mixing calls to alarm(2) and sleep() is a bad idea. Using longjmp(3) from a signal handler or modifying the handling of SIGALRM while sleeping will cause undefined results. SEE ALSO
alarm(2), nanosleep(2), signal(2), signal(7) COLOPHON
This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. GNU
2010-02-03 SLEEP(3)