/projects/2==>mkdirz toexecute
/projects/2==>echo echo $$ > toexecute/ppid
/projects/2==>chmod +x toexecute/ppid
/projects/2==>toexecute/ppid > toexecute/pid1
/projects/2==>toexecute/ppid > toexecute/pid2
/projects/2==>diff -q toexecute/pid1 toexecute/pid2
Files toexecute/pid1 and toexecute/pid2 differ
/projects/2==>erase toexecute/ppid
/projects/2==>erase toexecute/pid1
/projects/2==>erase toexecute/pid2
/projects/2==>rmdirz toexecute
/projects/2==>