--- a/scripts/seaf-fsck.sh
+++ b/scripts/seaf-fsck.sh
@@ -7,7 +7,7 @@ INSTALLPATH=$(dirname "${SCRIPT}")
 TOPDIR=$(dirname "${INSTALLPATH}")
 default_ccnet_conf_dir=${TOPDIR}/ccnet
 default_conf_dir=${TOPDIR}/conf
-seaf_fsck=${INSTALLPATH}/seafile/bin/seaf-fsck
+seaf_fsck=/usr/bin/seaf-fsck
 
 export PATH=${INSTALLPATH}/seafile/bin:$PATH
 export SEAFILE_LD_LIBRARY_PATH=${INSTALLPATH}/seafile/lib/:${INSTALLPATH}/seafile/lib64:${LD_LIBRARY_PATH}
--- a/scripts/seaf-gc.sh
+++ b/scripts/seaf-gc.sh
@@ -7,7 +7,7 @@ INSTALLPATH=$(dirname "${SCRIPT}")
 TOPDIR=$(dirname "${INSTALLPATH}")
 default_ccnet_conf_dir=${TOPDIR}/ccnet
 default_conf_dir=${TOPDIR}/conf
-seaf_gc=${INSTALLPATH}/seafile/bin/seafserv-gc
+seaf_gc=/usr/bin/seafserv-gc
 seaf_gc_opts=""
 
 export PATH=${INSTALLPATH}/seafile/bin:$PATH
--- a/scripts/setup-seafile-mysql.sh
+++ b/scripts/setup-seafile-mysql.sh
@@ -40,15 +40,10 @@ function check_python_executable() {
 function check_python_module () {
     module=$1
     name=$2
-    hint=$3
     printf "  Checking python module: ${name} ... "
     if ! $PYTHON -c "import ${module}" 2>/dev/null 1>&2; then
         echo
         printf "\033[33m ${name} \033[m is not installed, Please install it first.\n"
-        if [[ "${hint}" != "" ]]; then
-            printf "${hint}"
-            echo
-        fi
         err_and_quit;
     fi
     echo -e "Done."
@@ -70,14 +65,10 @@ function check_python () {
         if [[ $PYTHON == "python2.6" ]]; then
             py26="2.6"
         fi
-        hint="\nOn Debian/Ubntu: apt-get install python-setuptools\nOn CentOS/RHEL: yum install python${py26}-distribute"
-        check_python_module pkg_resources setuptools "${hint}"
-
-        hint="\nOn Debian/Ubntu: apt-get install python-imaging\nOn CentOS/RHEL: yum install python${py26}-imaging"
-        check_python_module PIL python-imaging "${hint}"
 
-        hint='\nOn Debian/Ubuntu:\n\nsudo apt-get install python-mysqldb\n\nOn CentOS/RHEL:\n\nsudo yum install MySQL-python'
-        check_python_module MySQLdb python-mysqldb "${hint}"
+        check_python_module pkg_resources setuptools
+        check_python_module PIL python-imaging
+        check_python_module MySQLdb python-mysqldb
     fi
     echo
 }
@@ -85,5 +76,6 @@ function check_python () {
 check_python;
 
 export PYTHON=$PYTHON
+export PYTHONPATH="/usr/share/seafile/seafile-server/seahub/thirdpart:$PYTHONPATH"
 
 exec $PYTHON "$python_script" "$@"
--- a/scripts/sqlite2mysql.sh
+++ b/scripts/sqlite2mysql.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # This shell script and corresponding sqlite2mysql.py are used to
 # migrate Seafile data from SQLite to MySQL.