[wise owl]

hi guys
i run Jaguar on an iMacDV400
I want to learn shell programming and picked up a book on Linux programming from local library.

I changed my shell to BASH (as it is used in the book) and tried the first example (echo "hello world") but didn't work.
the script is like this:

#!/bin/bash
echo "hello world"

I saved it as tryme.sh and changed its permissions, so it is executable, but if I try to run it from the terminal, this is what i get:
bash-2.05a$ tryme
bash: tryme: command not found
bash-2.05a$ tryme.sh
bash: tryme.sh: command not found
bash-2.05a$ sh tryme
tryme: tryme: No such file or directory
bash-2.05a$ sh tryme.sh
bash-2.05a$

on linux it would be supposed to run just by typing "tryme";
the icon of the file is still the one from BBEdit and requesting info gives "BBEdit text file" rather than "shell script"


...what am i missing?
is there a way to do this kind of stuff in OS X?

any help is VEEERY APPRECIATED!
cheers!

[Terri]

Just a guess but don't you need to specify the path to the file "tryme".

[Angus_D]

What he said.

./tryme.sh

and it's the same in linux.

[wise owl]

sorry, i forgot to mention: I changed working directory, so that doing an "ls" command I can see the tryme.sh file;

i tried
./tryme.sh

but this is what i get:

bash-2.05a$ ./tryme.sh
echo: bad interpreter: No such file or directory

also:
bash-2.05a$ tryme.sh
bash: tryme.sh: command not found



still confused

[Terri]

Drag and drop your file into the terminal window, this will display the path to it.

[Arkham_c]

Did you save the file with UNIX linefeeds (LF)? Mac linefeeds (CR) won't work and will cause the exact error you mention.

[Diggory Laycock]

try using wisp:

http://www.versiontracker.com/dyn/moreinfo/macos/15652

[VValdo]

Originally posted by wise owl:
sorry, i forgot to mention: I changed working directory, so that doing an "ls" command I can see the tryme.sh file;

i tried
./tryme.sh

but this is what i get:

bash-2.05a$ ./tryme.sh
echo: bad interpreter: No such file or directory

also:
bash-2.05a$ tryme.sh
bash: tryme.sh: command not found



still confused

Well, notice that the error is from echo, which means the file is being executed by bash. I think that there must be something wrong with your file's contents. Are you sure there are no weird hidden characters in there in the echo statement or something?

Make sure that you don't have any weird characters and that the file has been saved as a unix file. I just created a test file, test.sh, with the contents of your sample test and it worked fine for me. I did a

chmod u+x test.sh

to set the file's permissions so that it can be executed from the terminal by me.

Did you get it working?
W

[Terri]

Worked perfect for me too. I used BBEdit to create the file and saved it with UNIX line feeds.

[G4:~] create% chmod u+x /Users/create/Desktop/tryme
[G4:~] create% /Users/create/Desktop/tryme
hello world
[G4:~] create%

[quadgrande]

What are you using as a text editor? Text edit will work, although you may want to try vi or emacs from within the terminal if you're interested in shell scripting. BBEdit will also do the trick, although it can introduce the addition CR chars, configurable in preferences.

vi exists on almost every unix box. It's the one text editor you can count on. emacs will be on many, and pico will be on some.

your PATH variable is key in finding files. Type 'echo $PATH' at any command prompt to see its current value. If '.' (meaning 'the current directory') isn't in your PATH (and that's probably a good thing, because you don't want to mistake one program for another in whatever directory you happen to be in), than you'll have to specify the current directory with './'

To add a directory to your path in your current shell, type 'export PATH=$PATH:<directory to add>. To add the directory to all future shells (if you're using bash), create a file called '.profile' in your home directory and add the same statement to that file.

To change your default shell to bash, open netinfo (from utilities), and authenticate. Click on users, and then your username. You'll see a default shell, just change it to /bin/bash.

The default shell is normally kept in /etc/passwd on other unix boxes.

Whew!

[wise owl]

THANK YOU ALL GUYS! it works now!
it looks like the main problem was with line breaks - from BBEdit I saved the file as UNIX file.


Quadgrande, with " ... export PATH=$PATH:<directory to add> ..." do you mean all the shell scripts will then be in one directory? so then I can just call them by typing "./<name_of_file>"?




BIIIIIIIIIG THANKS!

PSownloaded WISP... nice one!
PS: do you know good websites for tutorials or information to have a good start with all this stuff (shell programming, unix/OSX...)?

[lenox]

Also:

If you use any of os x's included 'unix'-style text editors (i.e. emacs, vi, pico), you won't have to worry about saving the file with unix linefeeds as they do by default.

[Gavin]

Originally posted by wise owl:

PS: do you know good websites for tutorials or information to have a good start with all this stuff (shell programming, unix/OSX...)?

http://www.osxfaq.com/Tutorials/LearningCenter/

cheers