Strange behavior on fresh Debian installation

[Linux for blind general discussion]

Hi all,

Thank you for your suggestions. The problem is happening randomly
therefore I'll wait for the opportunity to come and start digging more
into it.
Will keep you posted.

Best Regards
Linux for blind general discussion writes:

> Tim here.  It sounds like you're going down the right path here.  If
> something modified the $PATH environment variable, it would cause
> exactly the symptoms the OP is experiencing.  The most common cause
> I've seen is trying to set the PATH to include a new location but
> failing to keep the old one around, something like
>
>    PATH=/path/to/new/location
>
> instead of
>
>    PATH=/path/to/new/location:$PATH
>
> I presume that the tools are still around and can be accessed by
> absolute path name, so if "ls" fails, I imagine that "/bin/ls" still
> works as expected.  If this isn't the case, it would be valuable
> information to have in troubleshooting.
>
> -tim
>
> On February  4, 2019, Linux for blind general discussion wrote:
>> I have seen stuff like that also.  When you first boot and
>> everything works, echo $PATH as others have already advised and
>> save that to somefile as in echo $PATH >somefile.
>> 
>> 	Then when things go to pot, echo $PATH >someotherfile.
>> 
>> 	Also, do the following:
>> 
>> pwd >mydir.  In this case, the file mydir will contain your
>> absolute path.  Then things go bust.  Try pwd again and see what
>> happens.  You might have something going that does a chroot which
>> is a great command but very powerful.  If it occurs for the wrong
>> reasons, you may have been put in to an environment that can't
>> reach all your normal executables.
>> 
>> 	You still will have to figure out what caused this and
>> how to fix it, but that's what makes unix good.  You have grownup
>> power tools to fix things with.  Just as a table saw will cut off
>> fingers as easily as it cuts wood, it's been said that unix can
>> give you some of the prettiest rope you ever hanged yourself with
>> so go cautiously.
>> 
>> 	At least your boot starts out working so whatever happens
>> isn't a permanent change.
>> 
>> Martin McCormick
>> Linux for blind general discussion <blinux-list at redhat.com> writes:
>> your execution path and causes everything to stop working.
>> 
>> 	If you run something that uses a command like chroot, you
>> can get pure weirdness because chroot makes it impossible to
>> search outside your current directory
>> > On Mon, 4 Feb 2019, Linux for blind general discussion wrote:
>> > 
>> > 
>> >     I'm having strange behaviour on fresh install of Debian 9
>> >     After I login and work for  a while then any command on bash
>> > terminal is
>> >     missing with message such as the following
>> >     bash: ls command not found
>> > 
>> > 
>> > You're not bumping the capslock by any chance?
>> > 
>> > If not, run:
>> > 
>> > echo $PATH
>> > 
>> > (note PATH in all capitals)
>> > 
>> > 
>> > to make sure that your search path hasn't changed. It should
>> > include /usr/ bin and /bin and ideally /usr/local/bin. Root
>> > should also have /usr/sbin and /sbin.
>> > 
>> > 
>> > HTH,
>> > Geoff.
>> > 
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>> > 
>> >   
>> 
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-- 
Edhoari Setiyoso