LinuxQuestions.org - [SOLVED] time command in bash is aliased or defined... but how?

I'm getting some strange behavior of the time command. It ignores command options. It must have been redefined, but I can't find an alias or function for it, so I don't know how it has been redefined. Here is what I am seeing:

Normal time command (no options):

Code:

$ time sleep 0.1



real        0m0.103s

user        0m0.000s

sys        0m0.000s

$

time command with --format option, then --help option:

Code:

$ time --format="%e" sleep 0.1

bash: --format=%e: command not found



real        0m0.002s

user        0m0.000s

sys        0m0.000s

$ time --help

bash: --help: command not found



real        0m0.002s

user        0m0.000s

sys        0m0.000s

$

As you see, it is expecting nothing but a command following the word "time." When I provide command options, they are simply passed on to the bash command interpreter, which gives the error messages shown above.

If I give the full path of the executable, it works fine:

Code:

$ /usr/bin/time sleep 0.1

0.00user 0.00system 0:00.10elapsed 0%CPU (0avgtext+0avgdata 560maxresident)k

0inputs+0outputs (0major+185minor)pagefaults 0swaps

$ /usr/bin/time --format="%e" sleep 0.1

0.10

$ /usr/bin/time --help

Usage: /usr/bin/time [-apvV] [-f format] [-o file] [--append] [--verbose]

      [--portability] [--format=format] [--output=file] [--version]

      [--quiet] [--help] command [arg...]

$

With the full path specified, it works exactly as described in the man pages.

Diagnostics:
I am running Debian 7.5 (Wheezy). I checked .bashrc and .profile in my home directory. I checked /etc/bash.bashrc, /etc/profile, and files in the /etc/profile.d directory. I checked env. I checked alias. I tried which and whereis. I checked $PATH. I tried unset -f time.

Code:

$ uname -a

Linux Mister_Chips 3.2.0-4-686-pae #1 SMP Debian 3.2.57-3+deb7u2 i686 GNU/Linux

$ cat /etc/debian_version

7.5

$ grep time .bashrc

$ grep time .profile

$ grep time /etc/bash.bashrc

                # check because c-n-f could've been removed in the meantime

$ grep time /etc/profile

$ find /etc/profile.d -type f -exec grep time {} \;

$ env | grep time

$ alias

alias ls='ls --color=auto'

$ which time

/usr/bin/time

$ whereis time

time: /usr/bin/time /usr/bin/X11/time /usr/include/time.h /usr/share/man/man1/time.1.gz /usr/share/man/man7/time.7.gz /usr/share/man/man2/time.2.gz

$ echo $PATH

/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games

$ for dir in /usr/local/bin /usr/bin /bin /usr/local/games /usr/games; do find $dir -name time; done

/usr/bin/time

$ unset -f time

$ time --help  # doing this to see if unset deleted the function...

bash: --help: command not found



real        0m0.002s

user        0m0.000s

sys        0m0.000s

$

In short, I cannot figure out why the time command is going wrong.

Help!

Also I am wondering how I can tell what other bash commands might have been redefined so that they do not work as described in the manual.