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For instance, I want:

/tmp: $ cs /home

to perform 'cd /home; ls' and give:

user1 user2 user3 egfile.txt
/home: $
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You can't pass arguments to an alias, but you can to a function.

cs() {
cd "$@"
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Better: cd "$@" && ls, so that the function returns a nonzero status (and doesn't run ls) if cd fails. Even better: builtin cd "$@" && ls, which still works even if the function is called cd. – Gilles Sep 20 '10 at 19:33

Combining the answered of @garyjohn and @Gilles with an interactive? check and elaborated on the ls output formatting.

Now you can safely add this to your ~/.bashrc or /etc/bash.bashrc:

A basic version

# Replace every cd with cd+ls
if [[ $- == *i* ]]; then  # if running interactively
  cd() {
    builtin cd "$@" && ls

A lovely version

Filters the output of ls so that only size, mtime, and name are displayed.

if [[ $- == *i* ]]; then  # if running interactively
  cd() {
    builtin cd "$@" &&
    ls --color=always -lh | 
    awk '{ for(i=5; i<=NF; i++) {printf("%s ", $i)}; print ""} '  | 
    column -t  && echo
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IMHO, "interactive?" checks are best done once in a rc file, with [ "$PS1" ] || return or [[ $- == *i* ]] || return, rather than wrapping everything in a very big if. – grawity Feb 3 '11 at 5:43
@grawity, I will leave the check in my answer just to be safe. Both a big if and return are valid ways. Thank you for the $- it seems to me a more reliable check. After all, one can use a shell interactively without a prompt. $PS always seemed artificial to me. – Aleksandr Levchuk Feb 3 '11 at 6:13
By the way, you don't need a \ after pipes or &&/|| operators. – grawity Feb 3 '11 at 13:53

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