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Trouble reading [noeol] file

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# 1  
Old 04-12-2010
Trouble reading [noeol] file
cat can't show the last line of a file sftp transffered from Windows, because the last line is not ended with new line.
Vi can show all line with warning [noeol]

I can append blank line in order for cat to show all lines, But is there a command to do this without modifying the file?

Code:
 
> cat -A test1.txt 
a$
> echo "">>test1.txt 
> cat -A test1.txt 
a$
b$

# 2  
Old 04-12-2010
That's the exact behavior you'd see if the byte after 'b' is a carriage return. The cursor would be brought back over the 'b' and then the command prompt would overwrite the 'b', making it seem as if it was never printed. Although perhaps the -A option should cause the carriage return to print as ^M or \r (I don't know since my cat does not support that option).

What exactly is in test1.txt? Please paste the output of
Code:
od -cb test1.txt

Regards,
Alister
# 3  
Old 04-12-2010
Quote:
Originally Posted by alister
That's the exact behavior you'd see if the byte after 'b' is a carriage return. The cursor would be brought back over the 'b' and then the command prompt would overwrite the 'b', making it seem as if it was never printed. Although perhaps the -A option should cause the carriage return to print as ^M or \r (I don't know since my cat does not support that option).

What exactly is in test1.txt? Please paste the output of
Code:
od -cb test1.txt

Regards,
Alister
Code:
 
> od -cb test1.txt
0000000   a  \n   b
        141 012 142
0000003

BTW: I wan't to loop through each line to do something with "while read", It just missed the last line.
# 4  
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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