03-31-2014
Reading colums from a text file
Hi all,
I have a text file that has (4) columns. There are about 300 lines on this file. It is a plain text file. I am looking to write a simple script that will read each line from the file and generate another text file. The file looks something like this:
These are the columns:
StudentName Grade Class Teacher
StudentName2 Grade Class Teacher
...
...
...
StudentName300 Grade Class Teacher
What I need to do is extract the text from this file and re-arrange it into another file.
For example, this is how the new file would be arranged:
Teacher Class Grade StudentName
I can easily do it when a file has just a single line, like this:
-------------------
StudentName = `cat /fileName | awk '{print $1}'
Grade = `cat /fileName | awk '{print $2}'
Class = `cat /fileName | awk '{print $3}'
Teacher = `cat /fileName | awk '{print $4}'
echo "${Teacher} ${Class} ${Grade} ${StudentName}" >> /NewFile
-------------------
Where I am struggling is how would I do this for a file that has 300 lines instead of just one?
I am sure it is something simple, I just need to be pointed in the right direction.
Thanks in advance!
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IGAWK(1) Utility Commands IGAWK(1)
NAME
igawk - gawk with include files
SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ...
igawk [ all gawk options ] [ -- ] program-text file ...
DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).
AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like
@include getopt.awk
in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.
OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports.
EXAMPLES
cat << EOF > test.awk
@include getopt.awk
BEGIN {
while (getopt(ARGC, ARGV, "am:q") != -1)
...
}
EOF
igawk -f test.awk
SEE ALSO
gawk(1)
Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.
AUTHOR
Arnold Robbins (arnold@skeeve.com).
Free Software Foundation Nov 3 1999 IGAWK(1)