As you can guess by their names, l and lr are tools I use frequently.
l was there first and simply lists all files recursively that
possibly match a given pattern.
l() {
local p=$argv[-1]
[[ -d $p ]] && { argv[-1]=(); } || p='.'
find $p ! -type d | sed 's:^./::' | egrep "${@:-.}"
}
It’s nice to naviate large codebases:
src/emacs-24.3% l term.c
etc/e/eterm-color
etc/e/eterm-color.ti
src/term.c
src/w32term.c
src/xterm.c
lisp/term/common-win.elc
lisp/term/cygwin.elc
lisp/term/cygwin.el
lisp/term/common-win.el
Note that it uses extended regular expressions instead of globs.
Also, you can pass a directory as the last argument to search there:
% l utmp /usr/share/man
/usr/share/man/man8/systemd-update-utmp-runlevel.service.8.gz
/usr/share/man/man8/systemd-update-utmp.service.8.gz
/usr/share/man/man8/utmpset.8.gz
/usr/share/man/man8/systemd-update-utmp.8.gz
/usr/share/man/man0/utmpx.h.0p.gz
/usr/share/man/man5/utmp.5.gz
/usr/share/man/man5/utmpx.5.gz
/usr/share/man/man1/utmpdump.1.gz
/usr/share/man/man3/utmpxname.3.gz
/usr/share/man/man3/utmpname.3.gz
/usr/share/man/man3/getutmpx.3.gz
/usr/share/man/man3/getutmp.3.gz
l is a very handy tool that I use often.
It’s bigger and newer brother is lr, which emulates ls -R in a
more reasonable way. It’s quite a mouthful:
lr() {
zparseopts -D -E S=S t=t r=r h=h U=U l=l F=F d=d
local sort="sort -t/ -k2" # by name (default)
local numfmt="cat"
local long='s:[^/]* /::; s:^\./\(.\):\1:;' # strip detail
local classify=''
[[ -n $F ]] && classify='/^d/s:$:/:; /^-[^ ]*x/s:$:*:;' # dir/ binary*
[[ -n $l ]] && long='s: /\./\(.\): \1:; s: /\(.\): \1:;' # show detail
[[ -n $S ]] && sort="sort -n -k5" # by size
[[ -n $r ]] && sort+=" -r" # reverse
[[ -n $t ]] && sort="sort -k6" && { [[ -n $r ]] || sort+=" -r" } # by date
[[ -n $U ]] && sort=cat # no sort, live output
[[ -n $h ]] && numfmt="numfmt --field=5 --to=iec --padding=6" # human fmt
[[ -n $d ]] && set -- "$@" -prune # don't enter dirs
find "$@" -printf "%M %2n %u %g %9s %TY-%Tm-%Td %TH:%TM /%p -> %l\n" |
$=sort | $=numfmt |
sed '/^[^l]/s/ -> $//; '$classify' '$long
}
A plain lr is like a find except for the stupid ./ at the
beginning of every line:
% lr
.
bar
bar/bla
bar/quux
foo/
foo/a/
foo/a/b
foo/a/b/c
However, you can pass -l to get more detail
(It even uses a reasonable date format. ;)):
% lr -lF
drwxrwxr-x 4 chris users 80 2013-06-29 16:28 ./
drwxrwxr-x 3 chris users 80 2013-06-29 16:28 bar/
drwxrwxr-x 2 chris users 40 2013-06-29 16:28 bar/bla/
-rw-rw-r-- 1 chris users 57 2013-06-29 16:28 bar/quux
drwxrwxr-x 3 chris users 60 2013-06-29 16:28 foo/
drwxrwxr-x 3 chris users 60 2013-06-29 16:28 foo/a/
drwxrwxr-x 2 chris users 60 2013-06-29 16:29 foo/a/b/
-rw-rw-r-- 1 chris users 317 2013-06-29 16:29 foo/a/b/c
The advantage is has is that it can sort over all arguments given. (By size, name, or date.) Compare:
% ls -lFRS bar foo/a/b
bar:
total 4
-rw-rw-r-- 1 chris users 57 Jun 29 16:28 quux
drwxrwxr-x 2 chris users 40 Jun 29 16:28 bla/
bar/bla:
total 0
foo/a/b:
total 4
-rw-rw-r-- 1 chris users 317 Jun 29 16:29 c
% lr -lFS bar foo/a/b
drwxrwxr-x 2 chris users 40 2013-06-29 16:28 bar/bla/
-rw-rw-r-- 1 chris users 57 2013-06-29 16:28 bar/quux
drwxrwxr-x 2 chris users 60 2013-06-29 16:29 foo/a/b/
drwxrwxr-x 3 chris users 80 2013-06-29 16:28 bar/
-rw-rw-r-- 1 chris users 317 2013-06-29 16:29 foo/a/b/c
Also, it keeps relative paths for copy and pasting:
% ls -lF ../22
total 4
-rwxrwxr-x 1 chris users 2160 Nov 3 2004 fix-maildir-timestamps.pl*
% lr -lF ../22
drwxrwxr-x 2 chris users 4096 2013-06-03 21:28 ../22/
-rwxrwxr-x 1 chris users 2160 2004-11-03 18:32 ../22/fix-maildir-timestamps.pl*
If you look closely, you’ll see that other arguments are passed to
find verbatim, so you can do more complex searches:
% lr -lF /usr/lib -size +80M
-rwxr-xr-x 1 root root 87749264 2013-06-20 06:25 /usr/lib/chromium/chromium*
-rw-r--r-- 1 root root 143132030 2013-04-21 19:53 /usr/lib/ghc-7.6.3/ghc-7.6.3/libHSghc-7.6.3_p.a
-rw-r--r-- 1 root root 85721136 2013-06-06 13:08 /usr/lib/maxima/5.30.0/binary-sbcl/maxima.core
I think lr is pretty much to how I actually want ls to work.
NP: Die Schnitter—Rebellenlied