diff --git a/concourse/scripts/ic_gpdb.bash b/concourse/scripts/ic_gpdb.bash
index f352a9e9713e3fd388e57a2165150003e15eccc6..d036a73fd09340457dd70eaefebe68baf9b9cb4d 100755
--- a/concourse/scripts/ic_gpdb.bash
+++ b/concourse/scripts/ic_gpdb.bash
@@ -21,7 +21,7 @@ function gen_env(){
 						DIFF FILE: \${diff_file}
 						----------------------------------------------------------------------
 
-						\$(head -1000 "\${diff_file}")
+						\$(cat "\${diff_file}")
 
 					FEOF
 			fi
diff --git a/concourse/scripts/ic_gpdb_resgroup.bash b/concourse/scripts/ic_gpdb_resgroup.bash
index 4b52c6484e6051ea097b412f11100ef13df8be5a..3fbde371c6d6a7f86db279de357bacd0c58803aa 100755
--- a/concourse/scripts/ic_gpdb_resgroup.bash
+++ b/concourse/scripts/ic_gpdb_resgroup.bash
@@ -83,7 +83,7 @@ DIFF FILE: \$diff
 ----------------------------------------------------------------------
 
 EOF1
-                head -1000 \$diff
+                cat \$diff
               done
             exit \$errcode
         )
diff --git a/concourse/scripts/ic_gpdb_sles12.bash b/concourse/scripts/ic_gpdb_sles12.bash
index a2d86ab2a835e9fb01d2cf4713d13442c1679acb..058a8d837915473a70d6418072440da14123305e 100755
--- a/concourse/scripts/ic_gpdb_sles12.bash
+++ b/concourse/scripts/ic_gpdb_sles12.bash
@@ -70,7 +70,7 @@ DIFF FILE: \${diff_file}
 ----------------------------------------------------------------------
 
 FEOF
-                head -1000 "\${diff_file}"
+                cat "\${diff_file}"
               done
             exit 1
         }
diff --git a/concourse/scripts/ic_gpdb_ubuntu.bash b/concourse/scripts/ic_gpdb_ubuntu.bash
index 5bba18aab0d1749a09f7cea65ecf18c16c28f5d4..2ba37a15f90f0dd2b5c7f41efed4e6773c8e97f2 100755
--- a/concourse/scripts/ic_gpdb_ubuntu.bash
+++ b/concourse/scripts/ic_gpdb_ubuntu.bash
@@ -44,7 +44,7 @@ function gen_icw_test_script(){
           ======================================================================
           DIFF FILE: \${diff_file}
           ----------------------------------------------------------------------
-          \$(head -1000 "\${diff_file}")
+          \$(cat "\${diff_file}")
 FEOF
       fi
     done
diff --git a/concourse/scripts/regression_tests_gpcloud.bash b/concourse/scripts/regression_tests_gpcloud.bash
index e1f9a725407f18487c71e89b5ebf6d269fa8df59..33f9444f56886d78167d13af3c08bd335729f936 100755
--- a/concourse/scripts/regression_tests_gpcloud.bash
+++ b/concourse/scripts/regression_tests_gpcloud.bash
@@ -22,7 +22,7 @@ source gpdemo/gpdemo-env.sh
 cd "\${GPDB_SRC_DIR}/gpAux/extensions/gpcloud/regress"
 make installcheck pgxs_dir=\$INSTALL_DIR/lib/postgresql/pgxs
 
-[ -s regression.diffs ] && head -1000 regression.diffs && exit 1
+[ -s regression.diffs ] && cat regression.diffs && exit 1
 exit 0
 
 EOF
diff --git a/concourse/scripts/regression_tests_gphdfs.bash b/concourse/scripts/regression_tests_gphdfs.bash
index 1ff88394c10a92689b7a781101492cf4dcf64615..34580983c7165714aed74c1778ba35d436ebdafb 100755
--- a/concourse/scripts/regression_tests_gphdfs.bash
+++ b/concourse/scripts/regression_tests_gphdfs.bash
@@ -24,7 +24,7 @@ function gen_env(){
 					DIFF FILE: \${diff_file}
 					----------------------------------------------------------------------
 
-					\$(head -1000 "\${diff_file}")
+					\$(cat "\${diff_file}")
 
 				FEOF
 		fi
diff --git a/concourse/scripts/tinc_gpdb.bash b/concourse/scripts/tinc_gpdb.bash
index 76bbc68ef42fa3025d61acaff0e01ded49ed5ed5..9dc9e7ab4e3ee6a3c8a4dfa3f0fac2846c62a955 100755
--- a/concourse/scripts/tinc_gpdb.bash
+++ b/concourse/scripts/tinc_gpdb.bash
@@ -15,7 +15,7 @@ function gen_env(){
 		echo "=================================================================="
 		echo "The differences that caused some tests to fail can also be viewed in the file saved at \${TINCDIR}/regression.diffs."
 		echo "=================================================================="
-		head -1000 "\${TINCDIR}/regression.diffs"
+		cat "\${TINCDIR}/regression.diffs"
 		exit 1
 		}