[EyeMac: ~]echo charlie bit me!
charlie bit me!
[EyeMac: ~]

[EyeMac: ~]say -v Zarvox brains are amazing

ECHO(1)                   BSD General Commands Manual                  ECHO(1)

NAME
     echo -- write arguments to the standard output

SYNOPSIS
     echo [-n] [string ...]

DESCRIPTION
     The echo utility writes any specified operands, separated by single blank
     (` ') characters and followed by a newline (`\n') character, to the stan-
     dard output.

     The following option is available:

     -n    Do not print the trailing newline character.  This may also be
           achieved by appending `\c' to the end of the string, as is done by
           iBCS2 compatible systems.  Note that this option as well as the
           effect of `\c' are implementation-defined in IEEE Std 1003.1-2001
           (``POSIX.1'') as amended by Cor. 1-2002.  Applications aiming for
           maximum portability are strongly encouraged to use printf(1) to
           suppress the newline character.

     Some shells may provide a builtin echo command which is similar or iden-
     tical to this utility.  Most notably, the builtin echo in sh(1) does not
     accept the -n option.  Consult the builtin(1) manual page.

EXIT STATUS
     The echo utility exits 0 on success, and >0 if an error occurs.

SEE ALSO
     builtin(1), csh(1), printf(1), sh(1)

STANDARDS
     The echo utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'') as
     amended by Cor. 1-2002.

BSD                             April 12, 2003                             BSD
(END)

[EyeMac: ~]man echo

for i in {<list of variables>}; do
	<commands>
done

for i in { 1 2 3 4 5 6 7 8 9 10 }; do
	touch subject_${i}.txt
done

[EyeMac: ~]ls
subject_1.txt
subject_2.txt
subject_3.txt
..
subject_10.txt