Here's result:

dkv@Dell-laptop ~ $ chdir /home/dkv/Downloads
bash: syntax error near unexpected token `newline'
dkv@Dell-laptop ~ $ chdir /home/dkv/
No command 'chdir' found, did you mean:
Command 'hdir' from package 'hfsutils' (main)
Command 'cdir' from package 'cdtool' (universe)
chdir: command not found
dkv@Dell-laptop ~ $ Command 'hdir' from package 'hfsutils'
Command: command not found
dkv@Dell-laptop ~ $
dkv@Dell-laptop ~ $