terminal script?

[Random_Bob]

I'm new to Linux as of a few days ago, and I only need/use it to run a single program for hosting purposes. I've been trying to set up a launcher for the program with little success. I did a bit of research on how to code scripts, and I really can't get them to work for me. At all. I'm not even sure how to get 'echo' outputs to work.

When I open a terminal, there are only two commands I need to type to run the program:

cd Desktop/byond/bin
DreamDaemon Test/Test.dmb 1000

So here's what I would like:

1) Instructions on how to make a launcher or script to execute those two simple commands. (The closest I could get with a launcher "application in terminal" was to get the terminal to flash on the screen and close.)

2) Not quite as important, but if easy to do: a script to check if the server is still up and running, and if not, to restart it.

Any help at all would be appreciated. Thanks!

[wowbag1]

Try this in a text editor.

#!/bin/bash
echo "first echo"
string1="second echo"
echo $string1
echo "Enter a string"
read $string2 #enter a string greeting here
echo $string2
exec ps

save as test1.sh
then do this in a terminal

chmod a+x test1.sh

to make it executable

then ./test1.sh

and see what it does.

[Random_Bob]

Awesome Thanks for the example
Using your example + a reference guide, I've figured out how to delete, copy, and move files.
as well as run my program of interest.

I do have one other question, though:

How can I determine if the program is running using an "if" statement? something like "if [program is running] then..."
I'm guessing I need to use 'top'?

"if [ DreamDaemon in top ]" ? something like that would be ideal
But it just tells me "Permission denied"

[i92guboj]

Awesome Thanks for the example
Using your example + a reference guide, I've figured out how to delete, copy, and move files.
as well as run my program of interest.

I do have one other question, though:

How can I determine if the program is running using an "if" statement? something like "if [program is running] then..."
I'm guessing I need to use 'top'?

"if [ DreamDaemon in top ]" ? something like that would be ideal
But it just tells me "Permission denied"

You can try something like:

if [ -n "$(ps -A | grep progname)" ]
then
echo yes
else
echo no
fi

Or this alternative form that some people hate:

[ -n "$(ps -A | grep progname)" ] && echo yes || echo no

[valan]

I reccomend you to look at the Advanced Bash Scripting Guide, it is a very useful and informative reference for this kind of stuff.

[Random_Bob]

You can try something like:

if [ -n "$(ps -A | grep progname)" ]
then
echo yes
else
echo no
fi

if [ -n $(ps -A | grep DreamDaemon) ]
works, but only if I remove the quotations
but once the game is up and running, it says I have too many arguments
I'm not sure why, since it works properly if I do this:
echo $(ps -A | grep DreamDaemon)

any ideas?

Thanks for the link Valan.
Unfortunately I'm having a really hard time finding what I need, though.
So far I've been looking up individual commands in various reference guides and testing things via trial + error.

[i92guboj]

if [ -n $(ps -A | grep DreamDaemon) ]
works, but only if I remove the quotations
but once the game is up and running, it says I have too many arguments
I'm not sure why, since it works properly if I do this:
echo $(ps -A | grep DreamDaemon)

any ideas?

Thanks for the link Valan.
Unfortunately I'm having a really hard time finding what I need, though.
So far I've been looking up individual commands in various reference guides and testing things via trial + error.

It needs the quotes. -n handles only one argugment. If you don't quote it, the string is interpreted as many strings separated with spaces.

99% of the times, you definitely want to quote the strings in bash if you know that they might hold spaces.