This literally means "peaceful sabbath" in Hebrew.
This is the standard greeting between Jews on Shabbat, from sundown on Friday until sundown on Saturday, but is often used as early as Thursday.
Shalom: peace/completeness or wholeness and general greeting for all time.
Shabbat: the seventh day of the week for the Jewish calendar. A day off (literally a day to be set apart from all other days-for introspection, spiritual growth, and renewal) - beginning on Friday at sundown and ending on Saturday evening when three stars appear in the sky and can be viewed together.
Shabbat Shalom Lekulam means 'A Good Sabbath to Everyone'
Shabbat Shalom is a greeting that Jews say to each other on Shabbat (the sabbath). It means "A peaceful Shabbat"
Shabbat shel Shalom (×©×‘×ª ×©×œ ×©×œ×•×) = "Shabbat of Peace"
Shabbat Shalom (×©×‘×ª ×©×œ×•×) = "A Shabbat of Peace" It is a greeting on Shabbat, and also the Hebrew equivalent of "have a nice weekend"
In Hebrew, the word Shabbat means sabbath, and Shalom means peace (used as greeting or farewell). So together, Shabbat Shalom means 'a peaceful Sabbath'.
Shabbat Shalom means "peaceful Sabbath" and is the standard greeting between Jews on Saturday.
You respond the same way: Shabbat Shalom
Shabbat Shalom = שבת שלום
You respond with the same, 'Shabbat shalom'.
You don't. You only say Shabbat shalom in Hebrew. If you are asking how French Jews greet each other on Shabbat, they say "Shabbat Shalom"