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Read file using while loop not reading last line

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# 1  
Old 06-16-2011
Read file using while loop not reading last line
I have written a script to read the file line by line.
It is reading and printing the lines.
But it is coming out of loop before reading last line.
So I am not able to print last line.
How do I solve it.

Quote:
while read line
do

let line_count="line_count + 1"
echo "line count $line_count : $line"

done < abc.txt
# 2  
Old 06-16-2011
it should read

post your file here
# 3  
Old 06-16-2011
It's old bag/feature. "While read" doesn't work when the last line of a file doesn't end with newline char. It reads the line but returns false (non-zero) value.

You can use this:

Code:
DONE=false
until $DONE; do
    read s || DONE=true
    # you code
done < FILE

# 4  
Old 06-16-2011
Quote:
Originally Posted by yazu
It's old bag/feature. "While read" doesn't work when the last line of a file doesn't end with newline char. It reads the line but returns false (non-zero) value.

You can use this:

Code:
DONE=false
until $DONE; do
    read s || DONE=true
    # you code
done < FILE

i tried in solaris. It is working fine without new line character

Code:
bash-3.00$ while read line; do echo $line; done < /tmp/myfile
bc
de
fg
bash-3.00$ cat /tmp/myfile
bc
de
fg

# 5  
Old 06-16-2011
Without the last newline your prompt should be like so:
Code:
% echo -n 'one
tho' > myfile
% cat myfile
one
tho%

# 6  
Old 06-16-2011
yes.. yazu, you are correct Smilie

thanks for the info
# 7  
Old 06-16-2011
Code:
awk '{print NR" : "$0}' abc.txt

Dependin whether wanting to number empty line as well or not

Code:
cat -n abc.txt

Code:
cat -b abc.txt

...Ooops
Last edited by ctsgnb; 06-16-2011 at 05:44 AM..
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