caffeinetiger · April 18, 2022 18:20
diff --git a/check_if_command_is_installed.sh b/check_if_command_is_installed.sh
 #!/bin/bash

 function exit_if_command_not_installed() {
    local some_command_to_check=$1
    if ! command -v $some_command_to_check &> /dev/null
    then
        echo "$some_command_to_check could not be found"
        exit
    fi
 }
diff --git a/check_if_env_or_any_variable_exists.sh b/check_if_env_or_any_variable_exists.sh
 #!/bin/bash

 if [[ -z "${SOME_ENV_VAR_OR_SCIPT_VAR}" ]]; then
 	echo "SOME_ENV_VAR_OR_SCIPT_VAR is not set." >&2
 	exit 1
 fi
diff --git a/set_variable_if_doesnt_exist.sh b/set_variable_if_doesnt_exist.sh
 #!/bin/bash

 if [ -z ${some_variable+x} ]; then 
    some_variable="some value";
 fi
	#!/bin/bash

	function exit_if_command_not_installed() {
	local some_command_to_check=$1
	if ! command -v $some_command_to_check &> /dev/null
	then
	echo "$some_command_to_check could not be found"
	exit
	fi
	}
	#!/bin/bash

	if [[ -z "${SOME_ENV_VAR_OR_SCIPT_VAR}" ]]; then
	echo "SOME_ENV_VAR_OR_SCIPT_VAR is not set." >&2
	exit 1
	fi