CODEWITHSUNDEEP
linuxbashshell
jomega
jomega

Reputation: 9

How to make my script actually execute, rathern than just print to console?

I'm trying to make the following snippet execute automatically. I have enabled permissions. I'm new to both Linux and shell scripting, and know very little about it. Here is the code I would like to execute:

raspivid  -t -0 -w 1080 -h 720 -awb auto -fps 30 -rot 90 -b 1200000 
-o -|ffmpeg -loglevel quiet -i - -vcodec copy -an -f flv 
-metadata streamName=myStream tcp://0.0.0.0:6666&

It works fine when I paste it into the command line and press "enter". However, I need it to execute automatically, so I'm trying to write a script to do that. This is what I've tried to do in nano editor:

#!/bin/bash
echo "...above code here..."

This only prints to console (probably obvious), but how can I make it execute? 1. I have made it executable (I believe) by using

sudo chmod +x start2s.sh

I have also enabled permissions like this: 

sudo chmod 755 start2s.sh

When I type 

sh start2s.sh

it just prints to console. Any help is appreciated.

Upvotes: 0

Views: 59

Answers (1)

Ljm Dullaart
Ljm Dullaart

Reputation: 4969

Some basic scripting tips:

#!/bin/bash
echo 'ls'

will print 

ls

and

#!/bin/bash
ls

will give you the output of ls.

In general, you will put an echo in your script

  • if you have something to output from the script
  • during development: if you want to be sure the command and arguments are correct, for example, because the command destroys things.

In the latter case, you will remove the echo from the script once you have verified the corretness.

Upvotes: 1

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