title: How to remove a character at the end of each line in UNIX
body: <p>I would like to remove comma <code>,</code> at the end of each line in my file. How can I do it other than using substring function in <code>awk</code>?</p>
  <p>Sample Input:</p>
  <pre><code>        SUPPLIER_PROC_ID BIGINT NOT NULL,
          BTCH_NBR INTEGER NOT NULL,
          RX_BTCH_SUPPLIER_SEQ_NBR INTEGER NOT NULL,
          CORRN_ID INTEGER NOT NULL,
          RX_CNT BYTEINT NOT NULL,
          DATA_TYP_CD BYTEINT NOT NULL,
          DATA_PD_CD BYTEINT NOT NULL,
          CYC_DT DATE NOT NULL,
          BASE_DT DATE NOT NULL,
          DATA_LOAD_DT DATE NOT NULL,
          DATA_DT DATE NOT NULL,
          SUPPLIER_DATA_SRC_CD BYTEINT NOT NULL,
          RX_CHNL_CD BYTEINT NOT NULL,
          MP_IMS_ID INTEGER NOT NULL,
          MP_LOC_ID NUMERIC(3,0),
          MP_IMS_ID_ACTN_CD BYTEINT NOT NULL,
          NPI_ID BIGINT,
  </code></pre>