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Shell Programming and Scripting
Syntax error piping to bc on command line - works when assigned to var
Post 302588618 by gencon on Monday 9th of January 2012 01:08:32 PM
01-09-2012
Corona688 and jim mcnamara: Did neither of you see the PS in my post !! 
I know I failed to realize that $1 would give me the first column (I assumed that would be the whole line). It's not that I can't do it, just that I want to understand what I am doing wrong with the pipe to bc. Anyone know?
Corona688: There are no extra spaces, or any spaces at all come to think of it.
Thanks guys. Cheers.
I know I failed to realize that $1 would give me the first column (I assumed that would be the whole line). It's not that I can't do it, just that I want to understand what I am doing wrong with the pipe to bc. Anyone know?Corona688: There are no extra spaces, or any spaces at all come to think of it.
Thanks guys. Cheers.
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LEARN ABOUT PLAN9
pr
PR(1) General Commands Manual PR(1) NAME
pr - print file SYNOPSIS
pr [ option ... ] [ file ... ] DESCRIPTION
Pr produces a printed listing of one or more files on its standard output. The output is separated into pages headed by a date, the name of the file or a specified header, and the page number. With no file arguments, pr prints its standard input. Options apply to all following files but may be reset between files: -n Produce n-column output. +n Begin printing with page n. -b Balance columns on last page, in case of multi-column output. -d Double space. -en Set the tab stops for input text every n spaces. -h Take the next argument as a page header (file by default). -in Replace sequences of blanks in the output by tabs, using tab stops set every n spaces. -f Use formfeeds to separate pages. -ln Take the length of the page to be n lines instead of the default 66. -m Print all files simultaneously, each in one column. -n Number the lines of each file. -on Offset the left margin n character positions. -sc Separate columns by the single character c instead of aligning them with white space. A missing c is taken to be a tab. -t Do not print the 5-line header or the 5-line trailer normally supplied for each page. -wn For multi-column output, take the width of the page to be n characters instead of the default 72. SOURCE
/sys/src/cmd/pr.c SEE ALSO
cat(1), lp(1) PR(1)