问题
I have a problem using awk in the terminal. I need to move many files in a group from the actual directory to another one and I have the list of the necessary files in a text file, as:
filename.txt
file1
file2
file3
...
I usually digit:
paste filename.txt | awk '{print "mv "$1" ../dir/"}' | sh
and it executes:
mv file1 ../dir/
mv file2 ../dir/
mv file3 ../dir/
It usually works, but now the command changes its behaviour and awk overwrites the last string ../dir/ on the first one, starting again the print command from the initial position, obtaining:
../dire1 ../dir/
../dire2 ../dir/
../dire3 ../dir/
and of course it cannot be executed. What's happened? How do I solve it?
回答1:
Your input file contains carriage returns (\r aka control-M). Run dos2unix on it before running a UNIX tool on it.
idk what you're using paste for though, and you should not be using awk for this at all anyway, it's just a job for a simple shell script, e.g. remove the echo once you've tested this:
$ < file xargs -n 1 -I {} echo mv "{}" "../dir"
mv file1 ../dir
mv file2 ../dir
mv file3 ../dir
来源：https://stackoverflow.com/questions/39902220/awk-print-overwrite-strings