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Top Forums Shell Programming and Scripting Help required in writing the regular expression. Post 302899488 by Corona688 on Tuesday 29th of April 2014 12:52:51 PM
Old 04-29-2014
Quote:
Originally Posted by VSSajjan
It may appear that i need to print all the lines but that is not the case. I need the first section in one go and next section in another go. Hope i have clarified the question.
So, you want to print all lines in the order they came in without modifying them any way, but can't use cat ? What constitutes a 'go'? You want to run the program once to get the first 3 lines, then again to get the second two lines...?

Do the columns mean anything? Explaining what the columns are would help. Right now we have no idea how much they're going to change.

What exactly are you trying to do? Tell us that, not the way you think you need to solve it...
 

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CAT(1)							      General Commands Manual							    CAT(1)

NAME
cat - catenate and print SYNOPSIS
cat [ -u ] [ -n ] [ -s ] [ -v ] file ... DESCRIPTION
Cat reads each file in sequence and displays it on the standard output. Thus cat file displays the file on the standard output, and cat file1 file2 >file3 concatenates the first two files and places the result on the third. If no input file is given, or if the argument `-' is encountered, cat reads from the standard input file. Output is buffered in the block size recommended by stat(2) unless the standard output is a terminal, when it is line buffered. The -u option makes the output completely unbuffered. The -n option displays the output lines preceded by lines numbers, numbered sequentially from 1. Specifying the -b option with the -n option omits the line numbers from blank lines. The -s option crushes out multiple adjacent empty lines so that the output is displayed single spaced. The -v option displays non-printing characters so that they are visible. Control characters print like ^X for control-x; the delete char- acter (octal 0177) prints as ^?. Non-ascii characters (with the high bit set) are printed as M- (for meta) followed by the character of the low 7 bits. A -e option may be given with the -v option, which displays a `$' character at the end of each line. Specifying the -t option with the -v option displays tab characters as ^I. SEE ALSO
cp(1), ex(1), more(1), pr(1), tail(1) BUGS
Beware of `cat a b >a' and `cat a b >b', which destroy the input files before reading them. 4th Berkeley Distribution May 5, 1986 CAT(1)
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