Não é possível acessar o diretório CPP .
ashutosh@ashutosh:~$ ls
17431- Microprocessor and Programming.pdf Documents Softbox
17431.pdf Downloads TASM
ANURAG geany TASM
Ashu's Books Movies & More untitled.html
Audiobooks Music Videos
CPP Pictures VirtualBox VMs
Desktop Public vmware
ashutosh@ashutosh:~$ cd CPP
bash: cd: CPP: No such file or directory
ashutosh@ashutosh:~$
para: - ls -la
total 1360
drwxr-xr-x 48 ashutosh ashutosh 4096 Jan 23 11:54 .
drwxr-xr-x 3 root root 4096 Jan 14 15:38 ..
-rw-r--r-- 1 ashutosh ashutosh 78197 Jan 10 15:48 17431- Microprocessor and Programming.pdf
-rw-r--r-- 1 ashutosh ashutosh 970448 Jan 10 15:50 17431.pdf
drwx------ 3 ashutosh ashutosh 4096 Jan 14 19:30 .adobe
drwx------ 15 ashutosh ashutosh 4096 Jan 14 15:49 ANURAG
drwx------ 25 ashutosh ashutosh 4096 Jan 21 21:33 Ashu's Books
drwxrwxr-x 2 ashutosh ashutosh 4096 Jan 18 16:49 Audiobooks
-rw------- 1 ashutosh ashutosh 10545 Jan 23 11:52 .bash_history
-rw-r--r-- 1 ashutosh ashutosh 220 Jan 14 15:38 .bash_logout
-rw-r--r-- 1 ashutosh ashutosh 3637 Jan 14 15:38 .bashrc
drwx------ 33 ashutosh ashutosh 4096 Jan 23 11:54 .cache
drwx------ 3 ashutosh ashutosh 4096 Jan 19 13:08 .calcurse
drwxrwxr-x 5 ashutosh ashutosh 4096 Jan 23 10:53 .cinnamon
drwx------ 3 ashutosh ashutosh 4096 Jan 14 17:32 .compiz
drwx------ 42 ashutosh ashutosh 4096 Jan 23 11:54 .config
drwxr-xr-x 9 ashutosh ashutosh 4096 Jan 18 21:22 .conky
drwxr-xr-x 2 ashutosh ashutosh 4096 Jan 22 15:32 CPP
drwx------ 3 ashutosh ashutosh 4096 Jan 14 18:48 .dbus
drwxr-xr-x 2 ashutosh ashutosh 4096 Jan 22 18:40 Desktop
-rw------- 1 ashutosh ashutosh 42 Jan 23 10:53 .dmrc
drwxr-xr-x 5 ashutosh ashutosh 4096 Jan 18 21:17 Documents
drwxr-xr-x 3 ashutosh ashutosh 4096 Jan 23 11:56 Downloads
-rw-r--r-- 1 ashutosh ashutosh 6137 Jan 18 16:29 .face
drwxr-xr-x 2 ashutosh ashutosh 4096 Jan 18 21:20 .fonts
drwx------ 3 ashutosh ashutosh 4096 Jan 23 11:36 .gconf
drwxr-xr-x 3 ashutosh ashutosh 4096 Jan 18 21:17 geany
drwxr-xr-x 24 root root 4096 Jan 20 18:39 .gimp-2.8
-rw-r----- 1 ashutosh ashutosh 0 Jan 23 11:53 .gksu.lock
drwx------ 3 ashutosh ashutosh 4096 Jan 23 11:54 .gnome
drwxr-xr-x 4 ashutosh ashutosh 4096 Jan 19 19:26 .gnome2
drwx------ 2 ashutosh ashutosh 4096 Jan 18 15:59 .gnome2_private
drwxr-xr-x 2 ashutosh ashutosh 4096 Jan 19 14:09 .gstreamer-0.10
drwx------ 2 root root 4096 Jan 20 10:22 .gvfs
-rw------- 1 ashutosh ashutosh 16634 Jan 23 10:53 .ICEauthority
drwxrwxr-x 2 ashutosh ashutosh 4096 Jan 14 18:49 .icons
drwxr-xr-x 3 ashutosh ashutosh 4096 Jan 14 15:43 .local
-rw-rw-r-- 1 ashutosh ashutosh 80 Jan 15 22:18 .~lock.Completedall .pptx#
-rw-rw-r-- 1 ashutosh ashutosh 80 Jan 15 21:54 .~lock.The Final Report .pptx#
drwx------ 3 ashutosh ashutosh 4096 Jan 14 19:30 .macromedia
drwx------ 3 ashutosh ashutosh 4096 Jan 19 14:13 .moc
drwx------ 4 ashutosh ashutosh 4096 Jan 21 13:02 Movies & More
drwx------ 4 ashutosh ashutosh 4096 Jan 14 15:54 .mozilla
drwxrwxr-x 2 ashutosh ashutosh 4096 Jan 14 16:57 .mplayer
drwxr-xr-x 3 ashutosh ashutosh 4096 Jan 14 16:18 Music
-rw-r--r-- 1 ashutosh ashutosh 374 Jan 18 12:14 .nvidia-settings-rc
drwxr-xr-x 4 ashutosh ashutosh 4096 Jan 21 21:13 Pictures
drwx------ 3 ashutosh ashutosh 4096 Jan 23 11:54 .pki
-rw-r--r-- 1 ashutosh ashutosh 31 Jan 19 19:20 .plymouth-manager.cf
-rw-r--r-- 1 ashutosh ashutosh 196 Jan 19 19:20 .PMtheme.plymouth
-rw-r--r-- 1 ashutosh ashutosh 196 Jan 19 19:20 .PMtheme.script
-rw-r--r-- 1 ashutosh ashutosh 675 Jan 14 15:38 .profile
drwxr-xr-x 3 ashutosh ashutosh 4096 Jan 18 16:56 Public
drwx------ 2 ashutosh ashutosh 4096 Jan 20 19:13 .remmina
drwx------ 11 ashutosh ashutosh 4096 Jan 21 21:31 Softbox
drwxr-xr-x 2 ashutosh ashutosh 4096 Jan 22 10:40 TASM
drwx------ 2 ashutosh ashutosh 4096 Jan 22 13:28 TASM
drwxrwxr-x 8 ashutosh ashutosh 4096 Jan 18 21:10 .themes
drwx------ 4 ashutosh ashutosh 4096 Jan 16 09:16 .thumbnails
-rw-r--r-- 1 ashutosh ashutosh 127 Jan 21 21:51 untitled.html
drwxr-xr-x 3 ashutosh ashutosh 4096 Jan 14 15:58 Videos
drwxrwxr-x 3 ashutosh ashutosh 4096 Jan 22 11:40 VirtualBox VMs
drwxr-xr-x 4 ashutosh ashutosh 4096 Jan 22 11:24 vmware
drwxr-xr-x 2 ashutosh ashutosh 4096 Jan 22 18:46 .vmware
drwxr-xr-x 4 ashutosh ashutosh 4096 Jan 22 13:26 .wine
-rw------- 1 ashutosh ashutosh 119 Jan 23 10:53 .Xauthority
-rw-r--r-- 1 ashutosh ashutosh 38086 Jan 23 11:56 .xsession-errors
-rw------- 1 ashutosh ashutosh 1067 Jan 17 12:01 .xsession-errors.old
Meu palpite é que existe um caractere de espaço (ou similar) no nome do diretório.
Para verificar isso, tente digitar cd CPP<tab> e ver se o shell o completa automaticamente em cd CPP\ / , o que significa que o nome do diretório termina com um caractere de espaço.
Outra maneira de verificar essa hipótese é ver um hexdump da saída do comando ls executando ls | hd (que você pode nos mostrar se ainda não conseguir fazer isso funcionar).