Cant run programs under strace

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http://serverfault.com – I'm trying to run this simple program ls under strace and it wouldnt let me. Can you guys think of why this be the case? [jeffjose@skipper ~]$ strace ls strace: ptrace(PTRACE_TRACEME, ...): Permission denied I'm on Fedora 17b, and my shell is tcsh. I can provide more info, if needed. UPDATE: Christopher points out that there's a bug report on this. He also suggests me to tweak selinux or disable it. Is that the only way? What does this mean? What am I doing if I do that? Can someone elaborate and answer that? I'll chose that as the correct answer for my query. Thanks! UPDATE2: I was doin (HowTos)