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Top Forums Shell Programming and Scripting Advice using cut & echo combination commands Post 302440560 by dc18 on Tuesday 27th of July 2010 02:23:13 PM
Old 07-27-2010
Question Advice using cut & echo combination commands

Hi,
I am cutting data from a fixed length test file and then writing out a new record using the echo command, the problem I have is how to stop multiple spaces from being written to the output file as a single space.
Example:
Code:
cat filea | while read line
do
  field1=`echo $line | cut -c1-2`
  field2=`echo $line | cut -c10-20`
  field3=`echo $line | cut -c21-35`
  echo $field1$field2$field3 >>outfile
done

Both field2 & field3 contain variable length text, the unused portion being space filled.

Thanks
Dave

Last edited by dc18; 07-27-2010 at 05:47 PM.. Reason: Please indent your code and use code tags
 

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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)
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