Linux Awk Support by Code

Question

I need to print the contents of a file and give a header to each column, leaving enough space for reading, and then I need to output it to a new file. I watched this tutorial closely, but I was stuck.

http://www.thegeekstuff.com/2010/01/awk-introduction-tutorial-7-awk-print-examples

This is an example of the code they use, which will give me exactly what I need to do with mine. But that will not work when I adjust it.

$ awk 'BEGIN {print "Name\tDesignation\tDepartment\tSalary";}
{print $2,"\t",$3,"\t",$4,"\t",$NF;}
END{print "Report Generated\n--------------";
}' employee.txt

This is mine, because unlike the example, I want the whole document to be printed and really do not want this “generated report” to be meaningless. I tried to add {print;} "to the end after this, and was sure to run a new line and ... nothing.

$ awk 'BEGIN {Print "Firstname\tLastname\tPoints";} END > awktest.txt > done

Where am I wrong? He continues to give me the response line of the source.

Answer 1

, , END ':

awk 'BEGIN {print "Name\tDesignation\tDepartment\tSalary";} {print $2,"\t",$3,"\t",$4,"\t",$NF;}' employee.txt

', , " > ", :

awk 'BEGIN {print "Firstname\tLastname\tPoints";}' awktest.txt > done

, , , "awktest.txt".

Answer 2

, , , END...

awk 'BEGIN {Print "Firstname\tLastname\tPoints";} END > awktest.txt > done`

...

awk 'BEGIN {Print "Firstname\tLastname\tPoints";}{print $1,"\t",$2,"\t",$3;}' source_file.txt > awktest.txt`

$1, $2, $3 .

FYI. , tuts:)

Answer 3

, , sed ( awk) cat

$ sed '1iFirstname\tLastname\tPoints' file > output.file

$ awk 'BEGIN{print "Firstname\tLastname\tPoints"} 1' file > output.file

$ cat <(echo -e "Firstname\tLastname\tPoints") file > output.file

Answer 4

The awk print function is called print, not print. idk why all solutions include ,"\t",in their printing operations. You do not want this - you want to install -v OFS='\t'at the beginning of the script, and then just use ,between fields. Anything you need:

awk -v OFS='\t' '
BEGIN {print "Name", "Designation", "Department", "Salary"}
{print $2, $3, $4, $NF}
}' employee.txt

Assuming these are the correct field numbers that you want to print from your data. An I / O example in your question would be extremely helpful to help us answer it.