whoopie@notebook:~/x/radeon_dump/dumps-shem$ ls

after.1-2.RUN  before.1-2.2  before.1-2.7  before.2-1.3  before.2-1.8  before.2-3.4  before.2-3.9  before.3-2.5
after.2-1.RUN  before.1-2.3  before.1-2.8  before.2-1.4  before.2-1.9  before.2-3.5  before.3-2.1  before.3-2.6
after.2-3.RUN  before.1-2.4  before.1-2.9  before.2-1.5  before.2-3.1  before.2-3.6  before.3-2.2  before.3-2.7
after.3-2.RUN  before.1-2.5  before.2-1.1  before.2-1.6  before.2-3.2  before.2-3.7  before.3-2.3  before.3-2.8
before.1-2.1   before.1-2.6  before.2-1.2  before.2-1.7  before.2-3.3  before.2-3.8  before.3-2.4  before.3-2.9

whoopie@notebook:~/x/radeon_dump/dumps-shem$ for B in before.*; do diff -q $B after${B#before} >/dev/null && echo $B is unchanged; done
diff: after.1-2.1: No such file or directory
diff: after.1-2.2: No such file or directory
diff: after.1-2.3: No such file or directory
diff: after.1-2.4: No such file or directory
diff: after.1-2.5: No such file or directory
diff: after.1-2.6: No such file or directory
diff: after.1-2.7: No such file or directory
diff: after.1-2.8: No such file or directory
diff: after.1-2.9: No such file or directory
diff: after.2-1.1: No such file or directory
diff: after.2-1.2: No such file or directory
diff: after.2-1.3: No such file or directory
diff: after.2-1.4: No such file or directory
diff: after.2-1.5: No such file or directory
diff: after.2-1.6: No such file or directory
diff: after.2-1.7: No such file or directory
diff: after.2-1.8: No such file or directory
diff: after.2-1.9: No such file or directory
diff: after.2-3.1: No such file or directory
diff: after.2-3.2: No such file or directory
diff: after.2-3.3: No such file or directory
diff: after.2-3.4: No such file or directory
diff: after.2-3.5: No such file or directory
diff: after.2-3.6: No such file or directory
diff: after.2-3.7: No such file or directory
diff: after.2-3.8: No such file or directory
diff: after.2-3.9: No such file or directory
diff: after.3-2.1: No such file or directory
diff: after.3-2.2: No such file or directory
diff: after.3-2.3: No such file or directory
diff: after.3-2.4: No such file or directory
diff: after.3-2.5: No such file or directory
diff: after.3-2.6: No such file or directory
diff: after.3-2.7: No such file or directory
diff: after.3-2.8: No such file or directory
diff: after.3-2.9: No such file or directory