Shell Programming and Scripting

How do i save a script in unix. do i just type something like
#!/bin/sh
# This is a comment!
echo Hello World #This is also a comment

Then just go to save as and save it or what? just kinda confused me as i was reading different things and playing around

You don't specify what shell you are using so here's the basic from a ksh - you would type the stuff in bold

$ TERM=vt100;export TERM
$ vi test-script
(You are now in the vi editor)

~
~
~
~
"test-script" [New file]

i
#!/bin/sh
# This is a comment!
echo Hello World #This is also a comment

Now hit the Escape key (ESC or Esc)
:
wq
$
$ chmod 744 test-script
$ ./test-script
Hello World
$

You don't have to use the vi editor but you should know it if you are a system administrator.

and that would save it so if i came in later i wouldnt have to retype all of it? *im using that as a general example so i can try other scripts as well so im just using that get the 'format' of the scripts down and trying to figure out how to save them so if i write a script then exit for some unknown reason i can go back in and the script will still be there. if that does save it where does it save to?

Perderabo gave you a way to create a script file. You can put any set of valid commands inside the file, and whenever you execute the file, it's like you typed all of that stuff over again.

RTM provided a good answer.....

The file he created, as an example, was called "test-script".... and he created the example using the vi editor. The "w" after the escape he describes writes (save) the file.

In this case the file was saved in the current working directory because he did not specify the full path of the file.

chmod 744 file will make it so that your friends can't run the file. You can do chmod 755 file so anybody can run it.

interesting definition of the term 'friends' - I've been looking for that for quite awhile! Thanks!