Programs become a no-op

Programs become a no-op

[Boylan, Ross]

I've tried
ssh -V
ssh --help
ssh -v somene@somewhere
and in all cases nothing happens except that I get a new command prompt.  They used to work fine.

I tried reinstalling ssh and libssh2_1.  No help.

I think the problem is more general:
man ssh
man -V
man --help
man man
also all get nothing.

On the other hand, grep, find and date (date might be a shell builtin) all seem to be working fine.

I just updated; it's been at least a week since earlier updates, and it's probably longer than that since I used ssh.

Running under Windows 7, 64 bit (cygwin is 64 bit too). I have local admin rights, used for the install, but did not request them when running cygwin. Symantec EndPoint Protection, though the logs don't seem to show it blocking or quarantining anything.

Any ideas?
Thanks.
Ross Boylan

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Re: Programs become a no-op

[Marco Atzeri]

On 5/2/2018 10:13 PM, Boylan, Ross wrote:
> I've tried
> ssh -V
> ssh --help
> ssh -v somene@somewhere
> and in all cases nothing happens except that I get a new command prompt.  They used to work fine.

likely broken dependency due to a package update gone wrong.
It usually happens when you do NOT shut down all processes before
running setup.

   strace ssh

should provide you an hint.


> Any ideas?

provide the cygcheck.out as requested at:
> Problem reports:       http://cygwin.com/problems.html

Regards
Marco



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Re: Programs become a no-op

[David Rothenberger]

On 5/2/2018 1:13 PM, Boylan, Ross wrote:
> I've tried
> ssh -V
> ssh --help
> ssh -v somene@somewhere
> and in all cases nothing happens except that I get a new command prompt.  They used to work fine.

This is usually due to a missing dependency. You can try "echo $?" after one of the failing commands. If it is 127, that's probably the issue. I usually track down the missing dependency by running the program under strace (strace ssh --help). It should pop-up a dialog window with the missing dependency library.

-- 
David Rothenberger  ----  daveroth@acm.org

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Re: Programs become a no-op

[Brian Inglis]

On 2018-05-02 14:13, Boylan, Ross wrote:
> I've tried
> ssh -V
> ssh --help
> ssh -v somene@somewhere
> and in all cases nothing happens except that I get a new command prompt.
> They used to work fine.
> I tried reinstalling ssh and libssh2_1.  No help.
> I think the problem is more general:
> man ssh
> man -V
> man --help
> man man
> also all get nothing.
> On the other hand, grep, find and date (date might be a shell builtin) all 
> seem to be working fine.
> I just updated; it's been at least a week since earlier updates, and it's 
> probably longer than that since I used ssh.
> Running under Windows 7, 64 bit (cygwin is 64 bit too). I have local admin 
> rights, used for the install, but did not request them when running cygwin. 
> Symantec EndPoint Protection, though the logs don't seem to show it blocking
> or quarantining anything.

Symptoms suggest SEPP BLODA, but could also be due to Windows SSH Client and
Server services set up by a Windows update and/or WSL Linux distro install:
check for and disable any SSH services.

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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Re: Programs become a no-op [SOLVED]

[Boylan, Ross]

Thanks Marco, David and Brian for your responses.

After the diagnostic steps described below, suggested by you, I ran the setup program and told it to reinstall cygwin, cygwin-base, and adwaita-icon-theme.  ssh and man are working again.

I'm a little puzzled how I got in this state, although it's possible I ran setup while I had a terminal open.  And I wonder why the setup program didn't reinstall the damaged packages itself, or at least complain about them (though there were some complaints--see last paragraph below).

Running strace ssh produced a popup 
   "The procedure entry point __memcpy_chk could not be located in the dynamic link library cygwin1.dll"
and cygcheck's output included
Package                   Version             Status
_autorebase               001007-1            OK
Missing file: /usr/share/icons/Adwaita/icon-theme.cache from package adwaita-icon-theme
adwaita-icon-theme        3.26.1-1            Incomplete
alternatives              1.3.30c-10          OK
at-spi2-core              2.26.2-1            OK
base-cygwin               3.8-1               OK
base-files                4.2-4               OK
bash                      4.4.12-3            OK
bzip2                     1.0.6-3             OK
ca-certificates           2.22-1              OK
coreutils                 8.26-2              OK
csih                      0.9.9-1             OK
curl                      7.59.0-1            OK
cygrunsrv                 1.62-1              OK
cygutils                  1.4.16-2            OK
Missing file: /usr/bin/gencat.exe from package cygwin
cygwin                    2.10.0-1            Incomplete

Those were the only 2 Incomplete packages.

Finally, I've been getting errors from the post-installation that some packages were not setup, but since they all seemed to be graphical and I don't have cygwin/X installed I thought they were harmless.  I guess they weren't. After the package reinstallation I get no such errors.

Ross

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