07. Writing to file(s)
There is one more flag that wasn't covered that is used with substitution command, the w. This is used to write the outputs to a file.
# sed script
/all/w all.txt
/One/w one.txt
/the/w the.txt
...
# Up to ten output files in one scriptWithin each instance of sed, you can include up to ten output files. Note the single space between the w flag and the output file name.
You can output a list of files depending on the last digit.
Examples
1) Write to first line
$ sed -n '1w output.txt'2) Write first and last line
$ sed -n -e '1w output.txt' -e '$w output.txt' oneOS.txt3) Write lines that match a specific pattern
$ sed -n '/pattern/w output.txt' oneOS.txtTake your Linux skills to the next level!
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