When doing mv or cp with --backup=simple, if an existing file in DIRECTORY has the same name as SOURCE, the files appear to be swapped instead of an in-place backup of the original file in DIRECTORY being made. It doesn't happen with --backup=numbered. SIMPLE_BACKUP_SUFFIX is not set.
Steps to reproduce: $ mkdir tmp $ echo "first file" > tmp/a $ echo "second file" > a $ command mv -v --backup=simple a tmp/ renamed 'a' -> 'tmp/a' (backup: 'tmp/a~') $ cat tmp/a~ cat: tmp/a~: No such file or directory $ cat a~ first file Version info: $ mv --version | head -n 1 mv (GNU coreutils) 9.1 $ uname -srm Linux 5.17.3-arch1-1 x86_64 $ ldd --version | head -n 1 ldd (GNU libc) 2.35 The filesystem type is ext4.
