Shell Keywords in Linux Programming

Keywords are the words whose meaning has already been explained to the shell.the keywords cannot be used as variable names because of it is a reserved words with containing reserved meaning.

echo

read

set

unset

readonly

shift

export

if

fi

else

while

do

done

for

until

case

esac

break

continue

exit

return

trap

wait

eval

exec

ulimit

umask

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