使用“ls -l -S *.d”命令按文件size从大到小列举文件，而“ls -l -S *.d | sort -k 5 -n”按文件size从小到大列举文件：
举个例子：
Nans-MacBook-Pro:Proc nanxiao$ ls -l -S *.d
-rwxr-xr-x@ 1 nanxiao staff 4988 Dec 7 11:51 crash.d
-rwxr-xr-x@ 1 nanxiao staff 3067 Dec 7 11:51 shortlived.d
-rwxr-xr-x@ 1 nanxiao staff 2491 Dec 7 11:51 rwbytype.d
-rwxr-xr-x@ 1 nanxiao staff 2452 Dec 7 11:51 pathopens.d
-rwxr-xr-x@ 1 nanxiao staff 2263 Dec 7 11:51 stacksize.d
-rwxr-xr-x@ 1 nanxiao staff 1684 Dec 7 11:51 kill.d
-rwxr-xr-x@ 1 nanxiao staff 1656 Dec 7 11:51 sigdist.d
-rwxr-xr-x@ 1 nanxiao staff 1651 Dec 7 11:51 threaded.d
-rwxr-xr-x@ 1 nanxiao staff 1583 Dec 7 11:51 mmapfiles.d
-rwxr-xr-x@ 1 nanxiao staff 1502 Dec 7 11:51 rwbbypid.d
-rwxr-xr-x@ 1 nanxiao staff 1494 Dec 7 11:51 rwbypid.d
-rwxr-xr-x@ 1 nanxiao staff 1476 Dec 7 11:51 sysbypid.d
-rwxr-xr-x@ 1 nanxiao staff 1331 Dec 7 11:51 pidpersec.d
-rwxr-xr-x@ 1 nanxiao staff 1331 Dec 7 11:51 syscallbypid.d
-rwxr-xr-x@ 1 nanxiao staff 283 Dec 7 11:51 filebyproc.d
-rwxr-xr-x@ 1 nanxiao staff 281 Dec 7 11:51 creatbyproc.d
-rwxr-xr-x@ 1 nanxiao staff 268 Dec 7 11:51 writedist.d
-rwxr-xr-x@ 1 nanxiao staff 267 Dec 7 11:51 newproc.d
-rwxr-xr-x@ 1 nanxiao staff 267 Dec 7 11:51 syscallbyproc.d
-rwxr-xr-x@ 1 nanxiao staff 264 Dec 7 11:51 readdist.d
-rwxr-xr-x@ 1 nanxiao staff 259 Dec 7 11:51 writebytes.d
-rwxr-xr-x@ 1 nanxiao staff 255 Dec 7 11:51 readbytes.d
Nans-MacBook-Pro:Proc nanxiao$ ls -l -S *.d | sort -k 5 -n
-rwxr-xr-x@ 1 nanxiao staff 255 Dec 7 11:51 readbytes.d
-rwxr-xr-x@ 1 nanxiao staff 259 Dec 7 11:51 writebytes.d
-rwxr-xr-x@ 1 nanxiao staff 264 Dec 7 11:51 readdist.d
-rwxr-xr-x@ 1 nanxiao staff 267 Dec 7 11:51 newproc.d
-rwxr-xr-x@ 1 nanxiao staff 267 Dec 7 11:51 syscallbyproc.d
-rwxr-xr-x@ 1 nanxiao staff 268 Dec 7 11:51 writedist.d
-rwxr-xr-x@ 1 nanxiao staff 281 Dec 7 11:51 creatbyproc.d
-rwxr-xr-x@ 1 nanxiao staff 283 Dec 7 11:51 filebyproc.d
-rwxr-xr-x@ 1 nanxiao staff 1331 Dec 7 11:51 pidpersec.d
-rwxr-xr-x@ 1 nanxiao staff 1331 Dec 7 11:51 syscallbypid.d
-rwxr-xr-x@ 1 nanxiao staff 1476 Dec 7 11:51 sysbypid.d
-rwxr-xr-x@ 1 nanxiao staff 1494 Dec 7 11:51 rwbypid.d
-rwxr-xr-x@ 1 nanxiao staff 1502 Dec 7 11:51 rwbbypid.d
-rwxr-xr-x@ 1 nanxiao staff 1583 Dec 7 11:51 mmapfiles.d
-rwxr-xr-x@ 1 nanxiao staff 1651 Dec 7 11:51 threaded.d
-rwxr-xr-x@ 1 nanxiao staff 1656 Dec 7 11:51 sigdist.d
-rwxr-xr-x@ 1 nanxiao staff 1684 Dec 7 11:51 kill.d
-rwxr-xr-x@ 1 nanxiao staff 2263 Dec 7 11:51 stacksize.d
-rwxr-xr-x@ 1 nanxiao staff 2452 Dec 7 11:51 pathopens.d
-rwxr-xr-x@ 1 nanxiao staff 2491 Dec 7 11:51 rwbytype.d
-rwxr-xr-x@ 1 nanxiao staff 3067 Dec 7 11:51 shortlived.d
-rwxr-xr-x@ 1 nanxiao staff 4988 Dec 7 11:51 crash.d
技巧出处：https://twitter.com/nixcraft/status/290535134485176321。