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Top Forums Shell Programming and Scripting Difference in awk output and while Post 303008590 by RudiC on Monday 4th of December 2017 05:10:50 AM
Old 12-04-2017
Quote:
Originally Posted by SkySmart
. . .
Code:
cksum sjreas.py | while OFS=' ' read v1 v2 ; do printf "${v1}${v2}"; done

The problem is, the while loop seems to have a problem with the spaces.
. . .
You've got two things deserving comments in above:
- the OFS variable has a meaning in awk (only / mostly). for shell, use IFS.
- as your v2 variable holds the remainder of the input line, i.e. 577 sjreas.py, I'd be surprised if the printf command only outputted a space, and not the file name, because, due to the quoting, everything would be the first parameter to printf and thus its "format string".
 

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cksum(n)							       cksum								  cksum(n)

NAME
cksum - calculate a cksum(1) compatible checksum SYNOPSIS
package require Tcl 8.2 package require cksum ?1.0? ::crc::cksum ?-format format? message ::crc::cksum ?-format format? -filename file DESCRIPTION
This package provides a Tcl-only implementation of the cksum(1) algorithm based upon information provided at in the GNU implementation of this program as part of the GNU Textutils 2.0 package. COMMANDS
::crc::cksum ?-format format? message ::crc::cksum ?-format format? -filename file The command takes string data or a file name and returns a checksum value calculated using the cksum(1) algorithm. The result is formatted using the format(n) specifier provided or as an unsigned integer (%u) by default. OPTIONS
-filename name Return a checksum for the file contents instead of for parameter data. -format string Return the checksum using an alternative format template. EXAMPLES
% crc::cksum "Hello, World!" 2609532967 % crc::cksum -format 0x%X "Hello, World!" 0x9B8A5027 % crc::cksum -file cksum.tcl 1828321145 SEE ALSO
sum(n), crc32(n) AUTHORS
Pat Thoyts KEYWORDS
cksum, checksum, crc, crc32, cyclic redundancy check, data integrity, security crc 1.0 cksum(n)
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