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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print(1) User Commands print(1)
NAME
print - shell built-in function to output characters to the screen or window
SYNOPSIS
ksh
print [ -Rnprsu [n]] [arg...]
DESCRIPTION
ksh
The shell output mechanism. With no flags or with flag - or -, the arguments are printed on standard output as described by echo(1).
OPTIONS
The following options are supported:
-n suppresses new-line from being added to the output.
-R
-r (raw mode) ignore the escape conventions of echo. The -R option will print all subsequent arguments and options other than
-n.
-p causes the arguments to be written onto the pipe of the process spawned with |& instead of standard output.
-s causes the arguments to be written onto the history file instead of standard output.
-u [ n ] flag can be used to specify a one digit file descriptor unit number n on which the output will be placed. The default is 1.
EXIT STATUS
The following exit values are returned:
0 Successful operation.
>0 Output file is not open for writing.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
echo(1), ksh(1), attributes(5)
SunOS 5.10 15 Apr 1994 print(1)