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Top Forums Shell Programming and Scripting read a file line by line in ksh Post 302230268 by chella on Friday 29th of August 2008 01:28:56 AM
Old 08-29-2008
read a file line by line in ksh

Hi,

In ksh we use 'while read line' statement to read a file line by line. In my input file I have 5 spaces appended at the end of each line. When I use while read line statement it chops off the spaces at the end of each line

Inp.txt
aaaa<five spaces>
bbbb<five spaces>
cccc<five spaces>

pgm.ksh
#!/bin/ksh
while read line
do
len=`echo "$line" | wc -c`
echo $len
done

my_output
5
5
5

But my expected output should be,
10
10
10

Kindly help me on this.

Thanks in advance,
Chella.
 

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line(1) 						      General Commands Manual							   line(1)

NAME
line - Reads one line from standard input SYNOPSIS
line STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: line: XCU5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. OPTIONS
None DESCRIPTION
The line command copies one line, up to and including a newline, from standard input and writes it to standard output. Use this command within a shell command file to read from your terminal. The line command always writes at least a newline character. NOTES
The line utility has no internationalization features and is marked LEGACY in XCU Issue 5. Use the read utility instead. EXIT STATUS
Success. End-of-File. EXAMPLES
To read a line from the keyboard and append it to a file, enter: echo 'Enter comments for the log:' echo ': c' line >>log This shell procedure displays the message: Enter comments for the log: It then reads a line of text from the keyboard and adds it to the end of the file log. The echo ': c' command displays a : (colon) prompt. See the echo command for information about the c escape sequence. SEE ALSO
Commands: echo(1), ksh(1), read(1), Bourne shell sh(1b), POSIX shell sh(1p) Functions: read(2) Standards: standards(5) line(1)
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