Differences
This shows you the differences between two versions of the page.
| Last revision Both sides next revision | |||
|
using_awk_to_prepend_or_append_data_to_each_line [2012/08/29 20:56] Joel Dare created |
using_awk_to_prepend_or_append_data_to_each_line [2020/06/01 22:53] 127.0.0.1 external edit |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| + | ====== Using AWK to Prepend or Append Data to Each Line ====== | ||
| + | |||
| + | AWK is a tool that is included in Unix and most Unix variants such as Linux and Mac OS X. Using AWK, you can prepend or append data to the beginning or end of every line in a text file. Here's an example. | ||
| + | |||
| + | cat input.csv | awk '{ print "12345," $0; }' | ||
| + | | ||
| + | This command will take every line from //input.csv//, pipe it through //awk// and echo it to stdout. //awk// in turn, will print "12345," at the beginning of each of those lines. The //$0// value means the rest of the line we passed to //awk// from //input.csv//. | ||
| + | |||
| + | If you wanted to output that data to a new file, just use the typical greater than sign to redirect to a new file (//output.csv// in the following example). | ||
| + | |||
| + | cat input.csv | awk '{ print "12345," $0; }' > output.csv | ||