Re: How to disable command prompt history?
Thank you guys, Actually, it was for the security reason that if somebody breaks in the server then he/she doesn't see what commands are being executed, etc, etc and I am using /bin/sh any more comments? thanks, VJ On 6/2/07, Kevin Hunter [EMAIL PROTECTED] wrote: At 1:56p -0400 on 02 Jun 2007, sac wrote: On 6/2/07, Christopher Hilton [EMAIL PROTECTED] wrote: VeeJay wrote: Could someone would like to describe that how we can disable to show last executed commands by pressing Up Arrow? That would depend on which shell you are running. Can you run the following command and post the results here? echo $SHELL By default most of the shells like bash, zsh, ksh have history option. But you can avoid writing the history of the current session to the history file by unsetting the HISTFILE environment variable. So next time when you login the history of the previous session will not be shown. I'd be curious as to the underlying why?. Having a history of what you've done is generally a Good Thing. The only reason that I personally have ever come across to necessitate not storing my actions is when I'm playing a prank on one of my friends. Other than that, having the ability to go see what commands I was executing three years ago comes in awful handy. I /could/ recreate that arcane command sequence for that one-off job I needed 1,237 days ago, or I could do a history | grep 'substring I remember in command' | less And, if you're worried about the space it takes to store the history, don't. It's extremely negligible. Kevin -- Thanks! BR / vj ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: How to disable command prompt history?
On 03/06/07, VeeJay [EMAIL PROTECTED] wrote: Thank you guys, Actually, it was for the security reason that if somebody breaks in the server then he/she doesn't see what commands are being executed, etc, etc and I am using /bin/sh any more comments? I would not have (honestly!) thought that /bin/sh _when called as such_ would save a history*. Glancing at man sh cured me of that notion. * I mean, it's a primitive piece of crap, in its own special way, but that's how /bin/sh is supposed to respond, AFIK? Syntax confu- sing is, never the same person twice, fnord? -- -- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: How to disable command prompt history?
At 4:42a -0400 on 03 Jun 2007, VeeJay wrote: Actually, it was for the security reason that if somebody breaks in the server then he/she doesn't see what commands are being executed, etc, etc and I am using /bin/sh any more comments? I don't use /bin/sh on a regular basis (bash, for better or worse) so I can't help you. From a security standpoint, I'm more wondering what makes you so worried that someone will break in? Would some suggestions from the community about securing your system be helpful? (I'm no security guru so don't ask me . . . 8- ) Also, why are you worried about them seeing what commands you've been running? My first thought is that at the point a malicious someone has broken into your system, you have (much) bigger things to worry about. But, to dumbly answer your question, see if sh looks for ~/.logout. If it does, have it remove ~/.history and clear the screen. Or, if the order of that doesn't work (if .logout is read /before/ .history is written), 'chmod 000 .history'. Best of luck, Kevin ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: How to disable command prompt history?
On Sun, 03 Jun 2007 22:37:59 -0400
Kevin Hunter [EMAIL PROTECTED] wrote:
Also, why are you worried about them seeing what commands you've been
running? My first thought is that at the point a malicious someone has
broken into your system, you have (much) bigger things to worry about.
good point. I do have this done in my laptop, only because I can :D (and a bit
harder for someone to know what u're supposed to do to mount the encrypted
drives big deal :D )
anyway, I just linked ~/.bash_history to /dev/null - history works within the
current shell, but not once I've exited. Anyway, having multiple shells writing
to the same history file is always problematic - it never keeps the one you
really need :-S
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How to disable command prompt history?
Hello there Could someone would like to describe that how we can disable to show last executed commands by pressing Up Arrow? -- Thanks! BR / vj ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: How to disable command prompt history?
VeeJay wrote: Hello there Could someone would like to describe that how we can disable to show last executed commands by pressing Up Arrow? That would depend on which shell you are running. Can you run the following command and post the results here? echo $SHELL -- Chris -- __o All I was doing was trying to get home from work. _`\,_ -Rosa Parks ___(*)/_(*)___ Christopher Sean Hiltonchris | at | vindaloo.com pgp key: D0957A2D/f5 30 0a e1 55 76 9b 1f 47 0b 07 e9 75 0e 14 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: How to disable command prompt history?
On 6/2/07, Christopher Hilton [EMAIL PROTECTED] wrote: VeeJay wrote: Hello there Could someone would like to describe that how we can disable to show last executed commands by pressing Up Arrow? That would depend on which shell you are running. Can you run the following command and post the results here? echo $SHELL By default most of the shells like bash, zsh, ksh have history option. But you can avoid writing the history of the current session to the history file by unsetting the HISTFILE environment variable. So next time when you login the history of the previous session will not be shown. sac. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: How to disable command prompt history?
At 1:56p -0400 on 02 Jun 2007, sac wrote: On 6/2/07, Christopher Hilton [EMAIL PROTECTED] wrote: VeeJay wrote: Could someone would like to describe that how we can disable to show last executed commands by pressing Up Arrow? That would depend on which shell you are running. Can you run the following command and post the results here? echo $SHELL By default most of the shells like bash, zsh, ksh have history option. But you can avoid writing the history of the current session to the history file by unsetting the HISTFILE environment variable. So next time when you login the history of the previous session will not be shown. I'd be curious as to the underlying why?. Having a history of what you've done is generally a Good Thing. The only reason that I personally have ever come across to necessitate not storing my actions is when I'm playing a prank on one of my friends. Other than that, having the ability to go see what commands I was executing three years ago comes in awful handy. I /could/ recreate that arcane command sequence for that one-off job I needed 1,237 days ago, or I could do a history | grep 'substring I remember in command' | less And, if you're worried about the space it takes to store the history, don't. It's extremely negligible. Kevin ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: How to disable command prompt history?
in message [EMAIL PROTECTED], wrote sac thusly... VeeJay wrote: Could someone would like to describe that how we can disable to show last executed commands by pressing Up Arrow? ... By default most of the shells like bash, zsh, ksh have history option. But you can avoid writing the history of the current session to the history file by unsetting the HISTFILE environment variable. So next time when you login the history of the previous session will not be shown. Perhaps so, but to me it seems that OP was asking to turn off the history recall in the current session itself. In bash zsh, setting HISTSIZE may be of some value. - Parv -- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
