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Full Discussion: Trouble reading [noeol] file
Top Forums Shell Programming and Scripting Trouble reading [noeol] file Post 302412150 by alister on Monday 12th of April 2010 01:32:09 AM
Old 04-12-2010
The "while read" probably read the final line just fine, but it also hit the end of file since there was no newline at the end of it, thereby exiting the loop.

Code:
$ printf 'a\nb' > test1.txt
$ od -cb test1.txt 
0000000    a  \n   b                                                    
          141 012 142                                                    
0000003
$ while read line; do echo IN WHILE: $line; done < test1.txt ; echo AFTER WHILE: $line
IN WHILE: a
AFTER WHILE: b

You could try the following to ensure that the loop body executes if the final "line" isn't newline terminated:
Code:
$ while read line || [ "$line" ]; do echo $line; done < test1.txt
a
b

Regards,
Alister
Last edited by alister; 04-12-2010 at 02:40 AM..
 

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cat

CAT(1)								   User Commands							    CAT(1)

NAME

       cat - concatenate files and print on the standard output

SYNOPSIS

       cat [OPTION]... [FILE]...

DESCRIPTION

       Concatenate FILE(s), or standard input, to standard output.

       -A, --show-all
	      equivalent to -vET

       -b, --number-nonblank
	      number nonempty output lines, overrides -n

       -e     equivalent to -vE

       -E, --show-ends
	      display $ at end of each line

       -n, --number
	      number all output lines

       -s, --squeeze-blank
	      suppress repeated empty output lines

       -t     equivalent to -vT

       -T, --show-tabs
	      display TAB characters as ^I

       -u     (ignored)

       -v, --show-nonprinting
	      use ^ and M- notation, except for LFD and TAB

       --help display this help and exit

       --version
	      output version information and exit

       With no FILE, or when FILE is -, read standard input.

EXAMPLES

       cat f - g
	      Output f's contents, then standard input, then g's contents.

       cat    Copy standard input to standard output.

AUTHOR

       Written by Torbjorn Granlund and Richard M. Stallman.

REPORTING BUGS

       Report cat bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report cat translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2011 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       tac(1)

       The  full  documentation  for cat is maintained as a Texinfo manual.  If the info and cat programs are properly installed at your site, the
       command

	      info coreutils 'cat invocation'

       should give you access to the complete manual.

GNU coreutils 8.12.197-032bb					  September 2011							    CAT(1)
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