mahmood questions

• How to duplicate lines in Linux with keeping the original order?
• How to split each of the columns in a data frame to two column?
• how to merge two file with awk?
• How to select some columns with AWK? [closed]
• Using AWK to find the smallest and largest number in a column?
• How to transfer the data of columns to rows (with awk)?
• how to use Linux command Sort to sort the text file according to 4th column, numeric order?

mahmood answers