ac8 ad1> pwd
/home/ant/ad1
ac8 ad1> ls -al
total 0
ac8 ad1> pwd
/home/ant/ad1
ac8 ad1> cd ..
cd: ..: No such file or directory
ac8 ad1> ls -al
total 0
ac8 ad1> which cd
/usr/bin/cd
ac8 ad1> which ls
/bin/ls
ac8 ad1> ls -ld .
drwxr-xr-x  0 ant ant 512 Dec 26 01:16 .