From: Geon Reuben (geomonap@rediffmail.com)
Date: Mon Nov 29 2004 - 13:54:38 EST
Hi guys:
I am trying to understand a shell program. I hope you guys can shed
some light on my questions.
The following program edits the a file. The
following is a snippet of the file fromt he start.
#----------------------
#
start of shell script
#----------------------
:
# fileadd.sh
# version 3.4 Wed
Feb 16 08:33:18 PST 2000 savefile
# version 4.0
umask 022
Intro() {
myfile=<somefile>
cat << EOF_INTRO
$MYNAME : This file adds the new users to
this file
deleted old users as their subscription expires or
is cancelled.
t_echo 0 " File $myfile is not correct "
t_echo 3 " "
EOF_INTRO
}
#----------
end of file --------------
The questions that I have are:
- The file starts
with ":". What does that mean ?
- What is "t_echo 0" and "t_echo 3"?. Is that
the same as echo ? What do the numbers indicate?
Thanks for you help.
GR
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