showdef () {
local file=
if [[ $1 == -f ]]
then
file=$2
shift 2
fi
if [[ -n $file ]]
then
(
shopt -s expand_aliases
source "$file" 2> /dev/null
showdef "$1"
)
return
fi
if alias "$1" &> /dev/null
then
alias "$1"
elif declare -f "$1" &> /dev/null
then
declare -f "$1"
elif [[ -n ${!1} ]]
then
echo "${!1}"
else
echo "No alias, function, or environment variable found for '$1'"
fi
}
This looks up the definition of a shell name — alias, function, or environment variable — and prints it.
with -f [.bashrc (for example)] it sources the given file in a subshell before running the lookup in that subshell.
If computer usage hampers a child's socialization with the group he's learning with, maybe the simplest and most meaningful solution would be preventing children enrolled in language comprehension classes from having access to computers at home particularly at core language and reasoning stages in development.
This looks up the definition of a shell name — alias, function, or environment variable — and prints it. with -f [.bashrc (for example)] it sources the given file in a subshell before running the lookup in that subshell.