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Top Forums Shell Programming and Scripting reading from a file and pass as variables and ignore # in the file Post 302144386 by konark on Wednesday 7th of November 2007 10:46:32 PM
Old 11-07-2007
Question reading from a file and pass as variables and ignore # in the file

file.txt contains
------------------
sat1 1300
#sat2 2400
sat3
sat4 500
sat5


I need to write a shell script that will output like the below
#output

sat1.ksh 1300
sat3.ksh
sat4.ksh 500
sat5.ksh


my try
-------
#!/bin/ksh

while read x y
do
echo "${x}.ksh ${y}"
done < file.txt

issues:
1) It doesnt ignore the 2nd line with # in the beginning.how to do it here.
2) Can we use awk or sed for the file reading? if yes then how?
 

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let(1)                                                             User Commands                                                            let(1)

NAME
let - shell built-in function to evaluate one or more arithmetic expressions SYNOPSIS
ksh let arg... DESCRIPTION
ksh Each arg is a separate "arithmetic expression" to be evaluated. EXIT STATUS
The following exit values are returned: 0 The value of the last expression is non-zero. 1 The value of the last expression is zero. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
ksh(1), set(1), typeset(1), attributes(5) SunOS 5.10 15 Apr 1994 let(1)
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