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cd into the latest directory

Terminal - cd into the latest directory
alias cd1='cd $( ls -lt | grep ^d | head -1 | cut -b 51- )'
2011-06-22 11:45:15
User: soulonfire
Functions: alias cut grep head ls
cd into the latest directory


There are 2 alternatives - vote for the best!

Terminal - Alternatives
alias cd1='cd $( ls -1t | grep ^d | head -1)'
cd $(ls -1t --color=never | head -1)
cd -

Know a better way?

If you can do better, submit your command here.

What others think

cd -

Comment by unixmonkey14106 242 weeks ago

@unixmonkey14106: You've misunderstood the meaning.

soulonfire's command will cd into the "most recently created" directory.

Your command will cd into the "user's previous location".

Comment by flatcap 241 weeks and 6 days ago

Very interesting. I can see it being very useful in log dirs.

However, we can improve on it with a bit of ls magic:

GNU ls has a "--group-directories-first" option which is just what we want.

Add to that, -1 (one entry per line) and we're ready.

alias cd1='cd $(ls -1t --group-directories-first | head -1)'

Of course getopt (the options parser in ls) allows us to use the unique portion of long options, so we can abbreviate the command significantly!

alias cd1='cd $(ls -1t --g | head -1)'
Comment by flatcap 241 weeks and 6 days ago

flatcap: `ls -lt --g |head -1` returns "total 58024". I think you should drop the '-l' parameter.

Also: both the original command, and flatcap's improvement will attempt to cd into a non-directory if there are no sub-directories in the cwd.

Comment by Mozai 240 weeks and 4 days ago

No, wait, sorry: the original won't because it uses 'grep -v ^d'. However, in *BOTH* cases, if no sub-directory is found, it will launch 'cd' with no arguments, which will change the cwd to $HOME instead of throwing an error, and that could be dangerous.

While I'm here: it's more efficient to use sed than to use `grep | cut`.

sed -n 's/^d.\{50\}//p'
Comment by Mozai 240 weeks and 4 days ago

damnit, I wish I could edit or delete my comments, I keep misspeaking.

cd $(ls -lt | grep ^d | head -1 | cut -b 51- )

... will go to $HOME if no subdir is found.

I mistook the '1' in flatcap's comment for a "l", so "total 58024" won't happen.

cd $(ls -1t --g | head -1)

... will return "cd: mrubbit.png: Not a directory" or something similar if no subdir is found

This will work and it is safer, but it's not really a one-liner anymore, and it clobbers whatever you had set in $OD:

alias cd1='OD=$(ls -lt |sed -n "/^d/ {s/^.\{51\}//p;q;}"); [ "$OD" ] && cd "$OD" || echo "no subdirs" >&2'
Comment by Mozai 240 weeks and 4 days ago

Your point of view

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