do anything with the last created (touched, accessed) file in the current dir

bar() { foo=$(ls -rt|tail -1) && read -ep "cat $foo? <y/n> " a && [[ $a != "n" ]] && eval "cat $foo" ;}
This command will display the file, but you can change 'cat' to anything else (type 'n' when prompted to cancel the command or anything else to proceed). . Some hints for newbies: type unset bar to make 'bar' function annihilated. For permanent usage you can put this (bar) function in your .bashrc (for bash) or in .profile (for sh). With: . ~/.bashrc you can get all new inserted functions in .bashrc (so the function 'bar' or whatever name you choose) immediately available.
Sample Output
$ bar
cat backup.sh? <y/n> ^C


0
By: knoppix5
2015-10-21 20:09:33

What Others Think

Hmm, knoppix5... It's not up to your usual standard :-( . The function parses the output of ls, which entirely depends on any alias I might have. Better, would be: /bin/ls . You sort by time (ls -t), then reverse the list (-r) and extract the last entry. It'd be more efficient to use head on the non-reversed list. (Head would read one line and stop, rather than tail reading all the lines). /bin/ls -t | head -1 . You read the response from the user, but don't quote it in the test. If the user types "no thanks", bar() fails. [[ "$a" != "n" ]] . Also you don't need bash's extended test syntax [[ ... ]], unless you want to search for a regex, e.g. [[ ! "$a" ~ ^n ]] matches "n", "no", "non", "nein" ... . Finally, I don't understand why you've used eval. You don't need it and it prevents quoting the filename. Good: cat "$foo" Fu: cat -- "$foo" . My version: bar() { F=$(/bin/ls -t|head -1) && read -ep "cat $F? <y/n> " A && [ ! "$A" = "n" ] && cat -- "$F";}
flatcap · 152 weeks and 4 days ago
@flatcap: >> Hmm, knoppix5... It's not up to your usual standard :-( Your all objections are in place, maybe I'm growing old. OK. Somebody can utilize your function and give me credit for the idea.
knoppix5 · 152 weeks and 4 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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