topic:
Copy file movement, there m1.txt m2.txt m3.txt m4.txt, respectively, to create the corresponding directory, m1 m2 m3 m4 and move the file to the corresponding directory.
answer:
#!/bin/bash touch m1.txt m2.txt m3.txt m4.txt I=1 while [ $I -le 4 ]; do mkdir m$I mv m$I.txt m$I I=$((I+1)) done