Shell_Scripts

Shell Scripts

How do I run .sh file shell script in Linux?

The procedure to run the .sh file shell script on Linux is as follows:

Open the Terminal application on Linux or Unix
Create a new script file with .sh extension using a text editor
Write the script file using nano script-name-here.sh
Set execute permission on your script using chmod command :
chmod +x script-name-here.sh
To run your script :
./script-name-here.sh
Another option is as follows to execute shell script:
sh script-name-here.sh
ORbash script-name-here.sh

I've solved it by including a backslash to escape the space:
/Program Filesbecomes/Program\ Files`

DESTINATION_PLATFORM_VALUE="generic/platform=iOS Simulator"
# vs
DESTINATION_PLATFORM_VALUE="generic/platform=iOS\ Simulator"

Try using this command to ensure your script is added to the boot sequence:

sudo update-rc.d /etc/init.d/nameofscript.sh defaults

Note that you can make a script executable using the +x option with chmod:

chmod +x /etc/init.d/nameofscript.sh

Cannot have spaces around = sign

Unexpected arguments:
command not found

built_device =`$device`
built_device = `$device`
built_device=`$device`

When you write:

STR = "foo"

bash tries to run a command named STR with 2 arguments (the strings = and foo)

STR =foo

bash tries to run a command named STR with 1 argument (the string =foo)

STR= foo

bash tries to run the command foo with STR set to the empty string in its environment.

foo="something"
bar="foo"
echo "${!bar}"

# something

x="ls | wc"
eval "$x"
y=$(eval "$x")
echo "$y"