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Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.1
From: |
Graham Jones |
Subject: |
Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53 |
Date: |
Thu, 6 Nov 2014 12:26:47 +1100 |
> On 6 Nov 2014, at 9:11 am, Piotr Grzybowski <narsil.pl@gmail.com> wrote:
>
> On Wed, Nov 5, 2014 at 2:57 PM, Chet Ramey <chet.ramey@case.edu> wrote:
>> I still can't reproduce it on OS X 10.10: [..]
>
> not only I cannot reproduce it at the moment, but also I have reached
> the following state (user: root):
>
> # cat .bash_history
> ls -al
> #1415144153
> ls -al .bash_history
> #1415144154
> pwd
> #1415144159
> rm .bash_history
> #1415144161
> cd
> #1415144163
> pwd
> #1415144165
> rm .bash_history
> #1415144171
> i=0; while [ $i -lt 64 ]; do history -a; history -n; let i++; done;
>
> # ls -alh .bash_history
> -rw------- 1 root wheel 9.0M Nov 5 22:59 .bash_history
>
> # du -sh .bash_history
> 9.0M .bash_history
>
> # hexdump -C .bash_history
> 00000000 6c 73 20 2d 61 6c 20 0a 23 31 34 31 35 31 34 34 |ls -al .#1415144|
> 00000010 31 35 33 0a 6c 73 20 2d 61 6c 20 2e 62 61 73 68 |153.ls -al .bash|
> 00000020 5f 68 69 73 74 6f 72 79 20 0a 23 31 34 31 35 31 |_history .#14151|
> 00000030 34 34 31 35 34 0a 70 77 64 0a 23 31 34 31 35 31 |44154.pwd.#14151|
> 00000040 34 34 31 35 39 0a 72 6d 20 2e 62 61 73 68 5f 68 |44159.rm .bash_h|
> 00000050 69 73 74 6f 72 79 20 0a 23 31 34 31 35 31 34 34 |istory .#1415144|
> 00000060 31 36 31 0a 63 64 0a 23 31 34 31 35 31 34 34 31 |161.cd.#14151441|
> 00000070 36 33 0a 70 77 64 0a 23 31 34 31 35 31 34 34 31 |63.pwd.#14151441|
> 00000080 36 35 0a 72 6d 20 2e 62 61 73 68 5f 68 69 73 74 |65.rm .bash_hist|
> 00000090 6f 72 79 20 0a 23 31 34 31 35 31 34 34 31 37 31 |ory .#1415144171|
> 000000a0 0a 69 3d 30 3b 20 77 68 69 6c 65 20 5b 20 24 69 |.i=0; while [ $i|
> 000000b0 20 2d 6c 74 20 36 34 20 5d 3b 20 64 6f 20 68 69 | -lt 64 ]; do hi|
> 000000c0 73 74 6f 72 79 20 2d 61 3b 20 68 69 73 74 6f 72 |story -a; histor|
> 000000d0 79 20 2d 6e 3b 20 6c 65 74 20 69 2b 2b 3b 20 64 |y -n; let i++; d|
> 000000e0 6f 6e 65 3b 0a 00 00 00 00 00 00 00 00 00 00 00 |one;............|
> 000000f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00902b60
>
> which puzzles me a bit.
> Now I lost even all my while-loop commands! :)
> Graham: did you actually logout and removed the history file, and
> therefore started fresh? Sorry I guess I lost track of what is going
> on here.
I did. We in terms of “logout”, I had a singe terminal session open. I unlinked
the history file and then ctrl-Dd that last session to close it. When I created
a new one, it was created and empty.
>
> cheers,
> pg
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, (continued)
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Graham Jones, 2014/11/03
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Chet Ramey, 2014/11/04
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Graham Jones, 2014/11/04
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Piotr Grzybowski, 2014/11/04
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Chet Ramey, 2014/11/05
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Piotr Grzybowski, 2014/11/05
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53,
Graham Jones <=
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Graham Jones, 2014/11/05
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Chet Ramey, 2014/11/05
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Piotr Grzybowski, 2014/11/06
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Greg Wooledge, 2014/11/06
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Chet Ramey, 2014/11/06
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Piotr Grzybowski, 2014/11/07
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Eric Blake, 2014/11/07
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Piotr Grzybowski, 2014/11/07
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Graham Jones, 2014/11/07
- Re: PROMPT_COMMAND='history -a; history -n' causes shell hang in OX 10.10 Yosemite / bash 3.2.53, Piotr Grzybowski, 2014/11/07