/usr/bin/time 命令 -v 不工作

我知道關於該命令的許多問題已被詢問/回答time，但我的似乎仍然無法正常工作。我一直在按照每個人的建議做，並且 using /usr/bin/time，這似乎有效，但是每次我嘗試使用/usr/bin/time -vor/usr/bin/time -verbose時，它都會吐出一個錯誤說

/usr/bin/time: illegal option -- v usage: time [-lp] command.

在一個理想的世界裡，我會使用tstime，但這也不是它所說的那樣tstime: command not found。我的 bash 是 3.2。我只是真的不知道發生了什麼事……

Mac OS X 不附帶 GNU 堆棧。你有 “BSD 時間” time.c,v 1.9。您可以通過鍵入以下內容來驗證這一點：

strings /usr/bin/time | grep c,v

BSD 時間不支持--verbose，但支持/usr/bin/time -lp：

$ /usr/bin/time -lp echo hi
hi
real         0.02
user         0.00
sys          0.00
   700416  maximum resident set size
        0  average shared memory size
        0  average unshared data size
        0  average unshared stack size
      174  page reclaims
        6  page faults
        0  swaps
        7  block input operations
        1  block output operations
        0  messages sent
        0  messages received
        0  signals received
        9  voluntary context switches
        1  involuntary context switches
$

這似乎提供了 GNUtime提供的大量輸出--verbose：

ubuntu@sandbox:~$ /usr/bin/time --verbose echo hi
hi
   Command being timed: "echo hi"
   User time (seconds): 0.00
   System time (seconds): 0.00
   Percent of CPU this job got: 66%
   Elapsed (wall clock) time (h:mm:ss or m:ss): 0:00.00
   Average shared text size (kbytes): 0
   Average unshared data size (kbytes): 0
   Average stack size (kbytes): 0
   Average total size (kbytes): 0
   Maximum resident set size (kbytes): 1804
   Average resident set size (kbytes): 0
   Major (requiring I/O) page faults: 0
   Minor (reclaiming a frame) page faults: 78
   Voluntary context switches: 1
   Involuntary context switches: 3
   Swaps: 0
   File system inputs: 0
   File system outputs: 0
   Socket messages sent: 0
   Socket messages received: 0
   Signals delivered: 0
   Page size (bytes): 4096
   Exit status: 0
ubuntu@sandbox:~$

如果你真的想要，你可以用Homebrew--verbose安裝 GNU ：time

$ brew install gnu-time
==> Downloading https://homebrew.bintray.com/bottles/gnu-time-1.7.yosemite.bottle.1.tar.gz
######################################################################## 100.0%
==> Pouring gnu-time-1.7.yosemite.bottle.1.tar.gz
🍺  /usr/local/Cellar/gnu-time/1.7: 8 files, 80K

$ gtime --verbose echo hi
hi
   Command being timed: "echo hi"
   User time (seconds): 0.00
   System time (seconds): 0.00
   Percent of CPU this job got: 16%
   Elapsed (wall clock) time (h:mm:ss or m:ss): 0:00.00
   Average shared text size (kbytes): 0
   Average unshared data size (kbytes): 0
   Average stack size (kbytes): 0
   Average total size (kbytes): 0
   Maximum resident set size (kbytes): 2785280
   Average resident set size (kbytes): 0
   Major (requiring I/O) page faults: 6
   Minor (reclaiming a frame) page faults: 279
   Voluntary context switches: 2
   Involuntary context switches: 6
   Swaps: 0
   File system inputs: 1
   File system outputs: 0
   Socket messages sent: 0
   Socket messages received: 0
   Signals delivered: 0
   Page size (bytes): 4096
   Exit status: 0

引用自：https://unix.stackexchange.com/questions/222555