diff --git a/client/CHANGELOG.md b/client/CHANGELOG.md
index 9b4d387..7f5a711 100644
--- a/client/CHANGELOG.md
+++ b/client/CHANGELOG.md
@@ -20,6 +20,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * tolerate absence of mtr or traceroute
 * Only one loop for all Redis instances
 * remodel how we build the rsync command
+* use sub shells instead of moving around
 
 ### Deprecated
 
diff --git a/client/zzz_evobackup b/client/zzz_evobackup
index 9871b44..8f057ca 100755
--- a/client/zzz_evobackup
+++ b/client/zzz_evobackup
@@ -255,9 +255,10 @@ local_tasks() {
     # mv ~postgres/pg.dump.bak ${LOCAL_BACKUP_DIR}/
 
     ## another method with gzip directly piped
-    # cd /var/lib/postgresql
-    # sudo -u postgres pg_dumpall | gzip > ${LOCAL_BACKUP_DIR}/pg.dump.bak.gz
-    # cd - > /dev/null
+    # (
+    #    cd /var/lib/postgresql;
+    #    sudo -u postgres pg_dumpall | gzip > ${LOCAL_BACKUP_DIR}/pg.dump.bak.gz
+    # )
 
     ## example with all tables from MYBASE excepts TABLE1 and TABLE2
     # pg_dump -p 5432 -h 127.0.0.1 -U USER --clean -F t --inserts -f ${LOCAL_BACKUP_DIR}/pg-backup.tar -t 'TABLE1' -t 'TABLE2' MYBASE
@@ -268,10 +269,11 @@ local_tasks() {
     ## example with compressed PostgreSQL dump for each databases
     # mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/postgresql
     # chown postgres:postgres ${LOCAL_BACKUP_DIR}/postgresql
-    # cd /var/lib/postgresql
-    # dbs=$(sudo -u postgres psql -U postgres -lt | awk -F\| '{print $1}' |grep -v template*)
-    # for databases in $dbs ; do sudo -u postgres /usr/bin/pg_dump --create -s -U postgres -d $databases | gzip --best -c > ${LOCAL_BACKUP_DIR}/postgresql/$databases.sql.gz ; done
-    # cd - > /dev/null
+    # (
+    #    cd /var/lib/postgresql
+    #    dbs=$(sudo -u postgres psql -U postgres -lt | awk -F\| '{print $1}' |grep -v template*)
+    #    for databases in $dbs ; do sudo -u postgres /usr/bin/pg_dump --create -s -U postgres -d $databases | gzip --best -c > ${LOCAL_BACKUP_DIR}/postgresql/$databases.sql.gz ; done
+    # )
 
     ## MongoDB