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echo

Print given arguments. More information: https://www.gnu.org/software/coreutils/manual/html_node/echo-invocation.html.

Print a text message. Note: quotes are optional:

echo "{{Hello World}}"

Print a message with environment variables:

echo "{{My path is $PATH}}"

Print a message without the trailing newline:

echo -n "{{Hello World}}"

Append a message to the file:

echo "{{Hello World}}" >> {{file.txt}}

Enable interpretation of backslash escapes (special characters):

echo -e "{{Column 1\tColumn 2}}"