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Old 09-19-2004, 03:55 PM   #1
alles32
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Registered: Sep 2004
Location: prague
Distribution: Debian testing
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grep -r foo /*


hallo all

I try grep some world on remote server, but unfortunately don't know, grep /dev and /proc is not good idea. during this process shut down sshd, apache, and i thing all network services, because i can't ping to the machine.
my question is, can i broke the system by this command? the last messages are:

bender:~# grep -r starabaskora /*
grep: /boot/boot.b: No such file or directory
grep: /dev/kmem: Bad address
Binary file /dev/mem matches
Binary file /dev/core matches
 
Old 09-19-2004, 05:50 PM   #2
btmiller
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Registered: May 2004
Location: In the DC 'burbs
Distribution: Arch, Scientific Linux, Debian, Ubuntu
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That command shouldn't break the system, even when run as root. It will probably shoot the CPU load (and possibly memory usage) way up though, making the system less responsive. It's possible you could've overloaded the system to the point where it couldn't cope any longer and started killing processes. If the kernel is buggy, it could've possibly crashed it. You can wait a few minutes to see if the system recovers (this actually happened to me once, testing new software on a remote server), or have your hosting facility (if it's in one) reboot it and examine the logs to see what (if anything) happened.
 
Old 09-19-2004, 06:20 PM   #3
alles32
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Registered: Sep 2004
Location: prague
Distribution: Debian testing
Posts: 2

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thank you for ansver.
i try apply this commant to my testing linux and nothing happend (i mean no crash).
now i have better grep command:
grep `ls / |grep -v /proc|grep -v /dev `
I will see tomorow, after reboot.
 
  


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