Alias for cd in Linux csh

Question

I used to have an alias for cd in csh, which can show the current time and directory at the beginning of the cmdline and trigger the ls command. The effect is like this:

[10:24] /home/cambridgelv/Desktop/cd ..
Desktop  Documents  Downloads  Music
[10:24] /home/cambridgelv/cd Desktop
abc.doc  def.jpg
[10:25] /home/cambridgelv/Desktop/

Does anybody have any idea?

@carlfriedrich to implement these function, for example, to trigger ls, is should be "alias cd 'cd ; ls'", but how to implement the other two function, I don't know. — Cambridge Lv, Jun 15 '22 at 09:07
Is this helpful? https://stackoverflow.com/questions/7131670/make-a-bash-alias-that-takes-a-parameter — Dominique, Jun 15 '22 at 09:09
@carlfriedrich These 3 effects could be implemented through one-line alias command, I used it for years, but I lost this command just a few days ago. — Cambridge Lv, Jun 15 '22 at 09:10
@Dominique Not exactly. I will try to recollect this alias if possible. Thank you anyway. — Cambridge Lv, Jun 15 '22 at 09:13

score 1 · Accepted Answer · answered Jun 17 '22 at 01:14

1

Let me answer it by myself. I thought maybe I aliased the set prompt command into cd before, so we can do this separately. Refer to this answer: https://stackoverflow.com/a/33037878/11768989 You can customize the prompt in any way. Mine is look like this:

set prompt = '%{\e[35;40;1m%}[%T @%m]%{\e[0m%} %~/'
alias cd "cd \!:1; ls"

answered Jun 17 '22 at 01:14

Cambridge Lv

31
7

I mean that the one-line command maybe is ```alias cd "set prompt = '%{\e[35;40;1m%}[%T @%m]%{\e[0m%} %~/';cd \!:1; ls"```, which is meaningless. – Cambridge Lv Jun 17 '22 at 01:20

score 0 · Answer 2 · answered Jun 15 '22 at 12:20

The easiest would be to hook in to the special cwdcmd alias; this gets run every time the current directory changes.

alias cwdcmd 'printf "[%s] " `date +%H:%m`'

For example, where > is the prompt:

> sleep 1

> cd /
[14:06] > sleep 1
> cd ~
[14:06] >

You can also alias cd with something like:

alias cd 'cd $* && printf "[%s] " `date +%H:%m`'

Where $* expand to the command arguments /dir in cd /dir. However, this also prints the directory in square brackets for some reason that I don't quite understand. The cwdcmd alias is better anyway.

Actually, this isn't a full answer, since it doesn't do the `ls`; I forgot about that. Getting the `ls` in there is a bit more effort as you want the date *before* the prompt and the `ls` *after* the prompt. — Martin Tournoij, Jun 15 '22 at 12:22

Alias for cd in Linux csh

2 Answers2