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Full Discussion: Rowtype in shell script
Top Forums Shell Programming and Scripting Rowtype in shell script Post 302351631 by panyam on Wednesday 9th of September 2009 06:48:45 AM
Old 09-09-2009
Quote:
Originally Posted by informsrini
Hi,

Thanks for the reply. Its my first post in this forum.

Iam new to shell script.
So can you give me an example for this operation considering that data i have specified is stored in the file "info.txt". Please let me know how to open that file and read the first row and assign it to a variable and retrieve back the second column's data from that variable.
some thing like this :
Code:
while read line 
do
echo "$line"  ## print each line 
echo "$line" | awk '{ print $2}'   ## to get the second filed 
done < file.txt                         ## read from the file

 

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echo(1) 						      General Commands Manual							   echo(1)

NAME
echo - echo (print) arguments SYNOPSIS
[arg] ... DESCRIPTION
writes its arguments separated by blanks and terminated by a new-line on the standard output. It also understands C-like escape conven- tions; beware of conflicts with the shell's use of write an alert character backspace print line without appending a new-line form-feed new-line carriage return tab vertical tab backslash the 8-bit character whose ASCII code is the 1-, 2-, 3- or 4-digit octal number n, whose first character must be a zero. write an 8-bit value that is the zero-, one-, two- or three-digit octal number num is useful for producing diagnostics in command files and for sending known data into a pipe. Notes Berkeley differs from this implementation. The former does not implement the backslash escapes. However, the semantics of the escape can be obtained by using the option. The echo command implemented as a built-in function of follows the Berkeley semantics (see csh(1)). EXTERNAL INFLUENCES
Environment Variables determines the interpretation of arg as single and/or multi-byte characters. If is not specified in the environment or is set to the empty string, the value of is used as a default for each unspecified or empty vari- able. If is not specified or is set to the empty string, a default of "C" (see lang(5)) is used instead of If any internationalization variable contains an invalid setting, behaves as if all internationalization variables are set to "C". See environ(5). International Code Set Support Single- and multi-byte character code sets are supported. AUTHOR
was developed by OSF and HP. SEE ALSO
sh(1). BUGS
No characters are printed after the first This is not normally a problem. STANDARDS CONFORMANCE
echo(1)
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