S.C. Code Ann. § 23-11-20: Oath.

Every sheriff before entering upon the duties of his office shall, in addition to the oath of office prescribed in Article 3, section 26, of the Constitution, take the oath required of such officer by Section 8-3-20 and such oaths shall be endorsed on the commission and shall be taken and subscribed before the clerk of the court of the county. At the next term of the circuit court in the county he shall produce his commission, which shall be read in open court and recorded in the journal.