제 시스템에는 man 페이지가 있군요.
 # man test | col -b
  TEST(1)                        FSF                        TEST
(1)
  NAME
       test - check file types and compare values
 SYNOPSIS
       test EXPRESSION
       test EXPRESSION ]
       test OPTION
 DESCRIPTION
       Exit with the status determined by EXPRESSION.
        --help display this help and exit
        --version
              output version information and exit
        EXPRESSION  is  true or false and sets exit status. 
It is
       one of:
        ( EXPRESSION )
              EXPRESSION is true
        ! EXPRESSION
              EXPRESSION is false
        EXPRESSION1 -a EXPRESSION2
              both EXPRESSION1 and EXPRESSION2 are true
        EXPRESSION1 -o EXPRESSION2
              either EXPRESSION1 or EXPRESSION2 is true
        [-n] STRING
              the length of STRING is nonzero
        -z STRING
              the length of STRING is zero
        STRING1 = STRING2
              the strings are equal
        STRING1 != STRING2
              the strings are not equal
        INTEGER1 -eq INTEGER2
              INTEGER1 is equal to INTEGER2
        INTEGER1 -ge INTEGER2
              INTEGER1 is greater than or equal to INTEGER2
        INTEGER1 -gt INTEGER2
              INTEGER1 is greater than INTEGER2
        INTEGER1 -le INTEGER2
              INTEGER1 is less than or equal to INTEGER2
        INTEGER1 -lt INTEGER2
              INTEGER1 is less than INTEGER2
        INTEGER1 -ne INTEGER2
              INTEGER1 is not equal to INTEGER2
        FILE1 -ef FILE2
              FILE1 and FILE2 have the same device and inode
num
              bers
        FILE1 -nt FILE2
              FILE1 is newer (modification date) than FILE2
        FILE1 -ot FILE2
              FILE1 is older than FILE2
        -b FILE
              FILE exists and is block special
        -c FILE
              FILE exists and is character special
        -d FILE
              FILE exists and is a directory
        -e FILE
              FILE exists
        -f FILE
              FILE exists and is a regular file
        -g FILE
              FILE exists and is set-group-ID
        -G FILE
              FILE exists and is owned by the effective group
ID
        -k FILE
              FILE exists and has its sticky bit set
        -L FILE
              FILE exists and is a symbolic link
        -O FILE
              FILE exists and is owned by the effective user
ID
        -p FILE
              FILE exists and is a named pipe
        -r FILE
              FILE exists and is readable
        -s FILE
              FILE exists and has a size greater than zero
        -S FILE
              FILE exists and is a socket
        -t [FD]
              file descriptor FD (stdout by default) is
opened on
              a terminal
        -u FILE
              FILE exists and its set-user-ID bit is set
        -w FILE
              FILE exists and is writable
        -x FILE
              FILE exists and is executable
        Beware that parentheses need to be escaped (e.g., by
back
       slashes) for shells.  INTEGER may also be -l STRING,
which
       evaluates to the length of STRING.
 REPORTING BUGS
       Report bugs to <bug-sh-utils at gnu.org>.
 SEE ALSO
       The full documentation for test is maintained as a
Texinfo
       manual.   If  the  info  and  test  programs  are
properly
       installed at your site, the command
               info test
        should give you access to the complete manual.
 COPYRIGHT
       Copyright  1999 Free Software Foundation, Inc.
       This is free software; see the source for  copying 
condi
       tions.  There is NO warranty; not even for
MERCHANTABILITY
       or FITNESS FOR A PARTICULAR PURPOSE.
   GNU sh-utils 2.0           August
1999                          3
     : 쉘 프로그램을 살펴보면 test라는 명령어를 사용하는 것을 본적이 있습니
다.
: 그런데 test에 해당하는 man 페이지가 없어서 사용법과 어디에 쓰이는
지 몰라서 이렇게
: 질문을 올립니다.
: 답변좀...
:
: --
: 이 곳에 서명을 적어주십시오.
: 허접같은 인생..