[vox-tech] Directory name changed out from underneath me.

[Nick Schmalenberger]

On Mon, Aug 01, 2011 at 11:25:36PM -0500, Ken Bloom wrote:
> On Mon, 2011-08-01 at 19:43 -0700, Nick Schmalenberger wrote:
> > On Mon, Aug 01, 2011 at 08:59:58PM -0500, Chanoch (Ken) Bloom wrote:
> > > I was just navigating around on one of the machines in my lab, when I
> > > noticed something wierd: bash is getting the name of one of my
> > > directories wrong when it tries to print it in the prompt.
> > > 
> > > [bloom at zuni ~]$ cd /
> > > [bloom at zuni /]$ ls
> > > bin/   etc/         lib/         media/        proc/     srv/  var/
> > > boot/  home/        lib32/       mnt/          root/     sys/  vmlinuz@
> > > data/  home-raid/   lib64@       nonexistent/  sbin/     tmp/
> > > dev/   initrd.img@  lost+found/  opt/          selinux/  usr/
> > > [bloom at zuni /]$ cd data
> > > [bloom at zuni dtaa]$ pwd
> > > /data
> > > [bloom at zuni dtaa]$ echo ~+
> > > /data
> > > [bloom at zuni dtaa]$ mount
> > > /dev/sda1 on / type ext3 (rw,errors=remount-ro)
> > > tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
> > > proc on /proc type proc (rw,noexec,nosuid,nodev)
> > > sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
> > > udev on /dev type tmpfs (rw,mode=0755)
> > > tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
> > > devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
> > > fusectl on /sys/fs/fuse/connections type fusectl (rw)
> > > binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
> > > nas.lingcog.iit.edu:/home2 on /home-raid type nfs (rw,nosuid,noatime,addr=216.47.152.22)
> > > nas.lingcog.iit.edu:/data on /data type nfs (rw,nosuid,noatime,addr=216.47.152.22)
> > > 
> > > It's correctly spelled in the pwd command, and bash's ~+ expansion, and
> > > also in the mount command (/data happens to be a mountpoint), so
> > > basically it's correctly spelled everywhere except for the prompt. Any
> > > ideas why?
> > >
> > What do echo $PWD and echo $PS1 say? $PS1 seems like the next
> > place to look, and particularly the \w part.
> 
> [bloom at zuni dtaa]$ echo $PS1
> [\u@\h \W]\$
> [bloom at zuni dtaa]$ echo $PWD
> /data
>
What if you try setting PS1 with \w instead of \W? Maybe there is
some weirdness with getting the basename from the full pathname.
Nick