diff --git a/daemon/core/configservices/frrservices/services.py b/daemon/core/configservices/frrservices/services.py
index 72050077..fa6f599a 100644
--- a/daemon/core/configservices/frrservices/services.py
+++ b/daemon/core/configservices/frrservices/services.py
@@ -65,7 +65,7 @@ class FRRZebra(ConfigService):
     ]
     executables: List[str] = ["zebra"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh frrboot.sh zebra"]
+    startup: List[str] = ["bash frrboot.sh zebra"]
     validate: List[str] = ["pidof zebra"]
     shutdown: List[str] = ["killall zebra"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
diff --git a/daemon/core/configservices/nrlservices/services.py b/daemon/core/configservices/nrlservices/services.py
index cf9b4c88..3f911aef 100644
--- a/daemon/core/configservices/nrlservices/services.py
+++ b/daemon/core/configservices/nrlservices/services.py
@@ -14,7 +14,7 @@ class MgenSinkService(ConfigService):
     files: List[str] = ["mgensink.sh", "sink.mgen"]
     executables: List[str] = ["mgen"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh mgensink.sh"]
+    startup: List[str] = ["bash mgensink.sh"]
     validate: List[str] = ["pidof mgen"]
     shutdown: List[str] = ["killall mgen"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -36,7 +36,7 @@ class NrlNhdp(ConfigService):
     files: List[str] = ["nrlnhdp.sh"]
     executables: List[str] = ["nrlnhdp"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh nrlnhdp.sh"]
+    startup: List[str] = ["bash nrlnhdp.sh"]
     validate: List[str] = ["pidof nrlnhdp"]
     shutdown: List[str] = ["killall nrlnhdp"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -58,7 +58,7 @@ class NrlSmf(ConfigService):
     files: List[str] = ["startsmf.sh"]
     executables: List[str] = ["nrlsmf", "killall"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh startsmf.sh"]
+    startup: List[str] = ["bash startsmf.sh"]
     validate: List[str] = ["pidof nrlsmf"]
     shutdown: List[str] = ["killall nrlsmf"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -93,7 +93,7 @@ class NrlOlsr(ConfigService):
     files: List[str] = ["nrlolsrd.sh"]
     executables: List[str] = ["nrlolsrd"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh nrlolsrd.sh"]
+    startup: List[str] = ["bash nrlolsrd.sh"]
     validate: List[str] = ["pidof nrlolsrd"]
     shutdown: List[str] = ["killall nrlolsrd"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -117,7 +117,7 @@ class NrlOlsrv2(ConfigService):
     files: List[str] = ["nrlolsrv2.sh"]
     executables: List[str] = ["nrlolsrv2"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh nrlolsrv2.sh"]
+    startup: List[str] = ["bash nrlolsrv2.sh"]
     validate: List[str] = ["pidof nrlolsrv2"]
     shutdown: List[str] = ["killall nrlolsrv2"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -139,7 +139,7 @@ class OlsrOrg(ConfigService):
     files: List[str] = ["olsrd.sh", "/etc/olsrd/olsrd.conf"]
     executables: List[str] = ["olsrd"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh olsrd.sh"]
+    startup: List[str] = ["bash olsrd.sh"]
     validate: List[str] = ["pidof olsrd"]
     shutdown: List[str] = ["killall olsrd"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -161,7 +161,7 @@ class MgenActor(ConfigService):
     files: List[str] = ["start_mgen_actor.sh"]
     executables: List[str] = ["mgen"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh start_mgen_actor.sh"]
+    startup: List[str] = ["bash start_mgen_actor.sh"]
     validate: List[str] = ["pidof mgen"]
     shutdown: List[str] = ["killall mgen"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -176,7 +176,7 @@ class Arouted(ConfigService):
     files: List[str] = ["startarouted.sh"]
     executables: List[str] = ["arouted"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh startarouted.sh"]
+    startup: List[str] = ["bash startarouted.sh"]
     validate: List[str] = ["pidof arouted"]
     shutdown: List[str] = ["pkill arouted"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
diff --git a/daemon/core/configservices/quaggaservices/services.py b/daemon/core/configservices/quaggaservices/services.py
index 19430664..bf23e00c 100644
--- a/daemon/core/configservices/quaggaservices/services.py
+++ b/daemon/core/configservices/quaggaservices/services.py
@@ -65,7 +65,7 @@ class Zebra(ConfigService):
     ]
     executables: List[str] = ["zebra"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh quaggaboot.sh zebra"]
+    startup: List[str] = ["bash quaggaboot.sh zebra"]
     validate: List[str] = ["pidof zebra"]
     shutdown: List[str] = ["killall zebra"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
diff --git a/daemon/core/configservices/securityservices/services.py b/daemon/core/configservices/securityservices/services.py
index 4a58fd8c..c656f5ca 100644
--- a/daemon/core/configservices/securityservices/services.py
+++ b/daemon/core/configservices/securityservices/services.py
@@ -14,7 +14,7 @@ class VpnClient(ConfigService):
     files: List[str] = ["vpnclient.sh"]
     executables: List[str] = ["openvpn", "ip", "killall"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh vpnclient.sh"]
+    startup: List[str] = ["bash vpnclient.sh"]
     validate: List[str] = ["pidof openvpn"]
     shutdown: List[str] = ["killall openvpn"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -48,7 +48,7 @@ class VpnServer(ConfigService):
     files: List[str] = ["vpnserver.sh"]
     executables: List[str] = ["openvpn", "ip", "killall"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh vpnserver.sh"]
+    startup: List[str] = ["bash vpnserver.sh"]
     validate: List[str] = ["pidof openvpn"]
     shutdown: List[str] = ["killall openvpn"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -91,7 +91,7 @@ class IPsec(ConfigService):
     files: List[str] = ["ipsec.sh"]
     executables: List[str] = ["racoon", "ip", "setkey", "killall"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh ipsec.sh"]
+    startup: List[str] = ["bash ipsec.sh"]
     validate: List[str] = ["pidof racoon"]
     shutdown: List[str] = ["killall racoon"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -106,7 +106,7 @@ class Firewall(ConfigService):
     files: List[str] = ["firewall.sh"]
     executables: List[str] = ["iptables"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh firewall.sh"]
+    startup: List[str] = ["bash firewall.sh"]
     validate: List[str] = []
     shutdown: List[str] = []
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -121,7 +121,7 @@ class Nat(ConfigService):
     files: List[str] = ["nat.sh"]
     executables: List[str] = ["iptables"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh nat.sh"]
+    startup: List[str] = ["bash nat.sh"]
     validate: List[str] = []
     shutdown: List[str] = []
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
diff --git a/daemon/core/configservices/utilservices/services.py b/daemon/core/configservices/utilservices/services.py
index b6bc0eb5..9b3369db 100644
--- a/daemon/core/configservices/utilservices/services.py
+++ b/daemon/core/configservices/utilservices/services.py
@@ -16,7 +16,7 @@ class DefaultRouteService(ConfigService):
     files: List[str] = ["defaultroute.sh"]
     executables: List[str] = ["ip"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh defaultroute.sh"]
+    startup: List[str] = ["bash defaultroute.sh"]
     validate: List[str] = []
     shutdown: List[str] = []
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -44,7 +44,7 @@ class DefaultMulticastRouteService(ConfigService):
     files: List[str] = ["defaultmroute.sh"]
     executables: List[str] = []
     dependencies: List[str] = []
-    startup: List[str] = ["sh defaultmroute.sh"]
+    startup: List[str] = ["bash defaultmroute.sh"]
     validate: List[str] = []
     shutdown: List[str] = []
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -66,7 +66,7 @@ class StaticRouteService(ConfigService):
     files: List[str] = ["staticroute.sh"]
     executables: List[str] = []
     dependencies: List[str] = []
-    startup: List[str] = ["sh staticroute.sh"]
+    startup: List[str] = ["bash staticroute.sh"]
     validate: List[str] = []
     shutdown: List[str] = []
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -94,7 +94,7 @@ class IpForwardService(ConfigService):
     files: List[str] = ["ipforward.sh"]
     executables: List[str] = ["sysctl"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh ipforward.sh"]
+    startup: List[str] = ["bash ipforward.sh"]
     validate: List[str] = []
     shutdown: List[str] = []
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -116,7 +116,7 @@ class SshService(ConfigService):
     files: List[str] = ["startsshd.sh", "/etc/ssh/sshd_config"]
     executables: List[str] = ["sshd"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh startsshd.sh"]
+    startup: List[str] = ["bash startsshd.sh"]
     validate: List[str] = []
     shutdown: List[str] = ["killall sshd"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -164,7 +164,7 @@ class DhcpClientService(ConfigService):
     files: List[str] = ["startdhcpclient.sh"]
     executables: List[str] = ["dhclient"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh startdhcpclient.sh"]
+    startup: List[str] = ["bash startdhcpclient.sh"]
     validate: List[str] = ["pidof dhclient"]
     shutdown: List[str] = ["killall dhclient"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
@@ -200,9 +200,9 @@ class PcapService(ConfigService):
     files: List[str] = ["pcap.sh"]
     executables: List[str] = ["tcpdump"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh pcap.sh start"]
+    startup: List[str] = ["bash pcap.sh start"]
     validate: List[str] = ["pidof tcpdump"]
-    shutdown: List[str] = ["sh pcap.sh stop"]
+    shutdown: List[str] = ["bash pcap.sh stop"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
     default_configs: List[Configuration] = []
     modes: Dict[str, Dict[str, str]] = {}
@@ -249,7 +249,7 @@ class AtdService(ConfigService):
     files: List[str] = ["startatd.sh"]
     executables: List[str] = ["atd"]
     dependencies: List[str] = []
-    startup: List[str] = ["sh startatd.sh"]
+    startup: List[str] = ["bash startatd.sh"]
     validate: List[str] = ["pidof atd"]
     shutdown: List[str] = ["pkill atd"]
     validation_mode: ConfigServiceMode = ConfigServiceMode.BLOCKING
diff --git a/daemon/core/executables.py b/daemon/core/executables.py
index 6eb0214a..7b7f80b7 100644
--- a/daemon/core/executables.py
+++ b/daemon/core/executables.py
@@ -1,5 +1,6 @@
 from typing import List
 
+BASH: str = "bash"
 VNODED: str = "vnoded"
 VCMD: str = "vcmd"
 SYSCTL: str = "sysctl"
@@ -11,7 +12,16 @@ MOUNT: str = "mount"
 UMOUNT: str = "umount"
 OVS_VSCTL: str = "ovs-vsctl"
 
-COMMON_REQUIREMENTS: List[str] = [SYSCTL, IP, ETHTOOL, TC, EBTABLES, MOUNT, UMOUNT]
+COMMON_REQUIREMENTS: List[str] = [
+    BASH,
+    EBTABLES,
+    ETHTOOL,
+    IP,
+    MOUNT,
+    SYSCTL,
+    TC,
+    UMOUNT,
+]
 VCMD_REQUIREMENTS: List[str] = [VNODED, VCMD]
 OVS_REQUIREMENTS: List[str] = [OVS_VSCTL]
 
diff --git a/daemon/core/location/mobility.py b/daemon/core/location/mobility.py
index e982c5c1..0e9b2e32 100644
--- a/daemon/core/location/mobility.py
+++ b/daemon/core/location/mobility.py
@@ -22,6 +22,7 @@ from core.emulator.enumerations import (
     RegisterTlvs,
 )
 from core.errors import CoreError
+from core.executables import BASH
 from core.nodes.base import CoreNode
 from core.nodes.interface import CoreInterface
 from core.nodes.network import WlanNode
@@ -1167,7 +1168,7 @@ class Ns2ScriptedMobility(WayPointMobility):
         if filename is None or filename == "":
             return
         filename = self.findfile(filename)
-        args = f"/bin/sh {filename} {typestr}"
+        args = f"{BASH} {filename} {typestr}"
         utils.cmd(
             args, cwd=self.session.session_dir, env=self.session.get_environment()
         )
diff --git a/daemon/core/nodes/base.py b/daemon/core/nodes/base.py
index cea1e81b..4cf6ea8d 100644
--- a/daemon/core/nodes/base.py
+++ b/daemon/core/nodes/base.py
@@ -599,7 +599,7 @@ class CoreNode(CoreNodeBase):
         if self.server is None:
             return self.client.check_cmd(args, wait=wait, shell=shell)
         else:
-            args = self.client.create_cmd(args)
+            args = self.client.create_cmd(args, shell)
             return self.server.remote_cmd(args, wait=wait)
 
     def termcmdstring(self, sh: str = "/bin/sh") -> str:
diff --git a/daemon/core/nodes/client.py b/daemon/core/nodes/client.py
index 93e099cf..710724b1 100644
--- a/daemon/core/nodes/client.py
+++ b/daemon/core/nodes/client.py
@@ -5,7 +5,7 @@ The control channel can be accessed via calls using the vcmd shell.
 """
 
 from core import utils
-from core.executables import VCMD
+from core.executables import BASH, VCMD
 
 
 class VnodeClient:
@@ -49,7 +49,9 @@ class VnodeClient:
         """
         pass
 
-    def create_cmd(self, args: str) -> str:
+    def create_cmd(self, args: str, shell: bool = False) -> str:
+        if shell:
+            args = f'{BASH} -c "{args}"'
         return f"{VCMD} -c {self.ctrlchnlname} -- {args}"
 
     def check_cmd(self, args: str, wait: bool = True, shell: bool = False) -> str:
@@ -63,5 +65,5 @@ class VnodeClient:
         :raises core.CoreCommandError: when there is a non-zero exit status
         """
         self._verify_connection()
-        args = self.create_cmd(args)
+        args = self.create_cmd(args, shell)
         return utils.cmd(args, wait=wait, shell=shell)
diff --git a/daemon/core/nodes/interface.py b/daemon/core/nodes/interface.py
index 7f33973e..20dc8fd3 100644
--- a/daemon/core/nodes/interface.py
+++ b/daemon/core/nodes/interface.py
@@ -383,12 +383,12 @@ class Veth(CoreInterface):
             try:
                 self.node.node_net_client.device_flush(self.name)
             except CoreCommandError:
-                logging.exception("error shutting down interface")
+                pass
         if self.localname:
             try:
                 self.net_client.delete_device(self.localname)
             except CoreCommandError:
-                logging.info("link already removed: %s", self.localname)
+                pass
         self.up = False
 
 
diff --git a/daemon/core/nodes/netclient.py b/daemon/core/nodes/netclient.py
index 96a1f4be..68fbef98 100644
--- a/daemon/core/nodes/netclient.py
+++ b/daemon/core/nodes/netclient.py
@@ -121,11 +121,7 @@ class LinuxNetClient:
         :param device: device to flush
         :return: nothing
         """
-        self.run(
-            f"[ -e /sys/class/net/{device} ] && "
-            f"{IP} address flush dev {device} || true",
-            shell=True,
-        )
+        self.run(f"{IP} address flush dev {device}")
 
     def device_mac(self, device: str, mac: str) -> None:
         """
diff --git a/daemon/core/services/emaneservices.py b/daemon/core/services/emaneservices.py
index d694317a..4fd78ec1 100644
--- a/daemon/core/services/emaneservices.py
+++ b/daemon/core/services/emaneservices.py
@@ -13,7 +13,7 @@ class EmaneTransportService(CoreService):
     dependencies: Tuple[str, ...] = ()
     dirs: Tuple[str, ...] = ()
     configs: Tuple[str, ...] = ("emanetransport.sh",)
-    startup: Tuple[str, ...] = (f"sh {configs[0]}",)
+    startup: Tuple[str, ...] = (f"bash {configs[0]}",)
     validate: Tuple[str, ...] = (f"pidof {executables[0]}",)
     validation_timer: float = 0.5
     shutdown: Tuple[str, ...] = (f"killall {executables[0]}",)
diff --git a/daemon/core/services/frr.py b/daemon/core/services/frr.py
index b130fd8c..cec9d860 100644
--- a/daemon/core/services/frr.py
+++ b/daemon/core/services/frr.py
@@ -26,7 +26,7 @@ class FRRZebra(CoreService):
         "/usr/local/etc/frr/vtysh.conf",
         "/usr/local/etc/frr/daemons",
     )
-    startup: Tuple[str, ...] = ("sh frrboot.sh zebra",)
+    startup: Tuple[str, ...] = ("bash frrboot.sh zebra",)
     shutdown: Tuple[str, ...] = ("killall zebra",)
     validate: Tuple[str, ...] = ("pidof zebra",)
 
diff --git a/daemon/core/services/nrl.py b/daemon/core/services/nrl.py
index 697f4eee..91e053b2 100644
--- a/daemon/core/services/nrl.py
+++ b/daemon/core/services/nrl.py
@@ -97,7 +97,7 @@ class NrlSmf(NrlService):
 
     name: str = "SMF"
     executables: Tuple[str, ...] = ("nrlsmf",)
-    startup: Tuple[str, ...] = ("sh startsmf.sh",)
+    startup: Tuple[str, ...] = ("bash startsmf.sh",)
     shutdown: Tuple[str, ...] = ("killall nrlsmf",)
     validate: Tuple[str, ...] = ("pidof nrlsmf",)
     configs: Tuple[str, ...] = ("startsmf.sh",)
@@ -566,7 +566,7 @@ class MgenActor(NrlService):
     group: str = "ProtoSvc"
     executables: Tuple[str, ...] = ("mgen",)
     configs: Tuple[str, ...] = ("start_mgen_actor.sh",)
-    startup: Tuple[str, ...] = ("sh start_mgen_actor.sh",)
+    startup: Tuple[str, ...] = ("bash start_mgen_actor.sh",)
     validate: Tuple[str, ...] = ("pidof mgen",)
     shutdown: Tuple[str, ...] = ("killall mgen",)
 
@@ -596,7 +596,7 @@ class Arouted(NrlService):
     name: str = "arouted"
     executables: Tuple[str, ...] = ("arouted",)
     configs: Tuple[str, ...] = ("startarouted.sh",)
-    startup: Tuple[str, ...] = ("sh startarouted.sh",)
+    startup: Tuple[str, ...] = ("bash startarouted.sh",)
     shutdown: Tuple[str, ...] = ("pkill arouted",)
     validate: Tuple[str, ...] = ("pidof arouted",)
 
diff --git a/daemon/core/services/quagga.py b/daemon/core/services/quagga.py
index 9e2c7cc0..8c474fd8 100644
--- a/daemon/core/services/quagga.py
+++ b/daemon/core/services/quagga.py
@@ -25,7 +25,7 @@ class Zebra(CoreService):
         "quaggaboot.sh",
         "/usr/local/etc/quagga/vtysh.conf",
     )
-    startup: Tuple[str, ...] = ("sh quaggaboot.sh zebra",)
+    startup: Tuple[str, ...] = ("bash quaggaboot.sh zebra",)
     shutdown: Tuple[str, ...] = ("killall zebra",)
     validate: Tuple[str, ...] = ("pidof zebra",)
 
diff --git a/daemon/core/services/sdn.py b/daemon/core/services/sdn.py
index ef077662..e72b5138 100644
--- a/daemon/core/services/sdn.py
+++ b/daemon/core/services/sdn.py
@@ -31,7 +31,7 @@ class OvsService(SdnService):
         "/var/log/openvswitch",
     )
     configs: Tuple[str, ...] = ("OvsService.sh",)
-    startup: Tuple[str, ...] = ("sh OvsService.sh",)
+    startup: Tuple[str, ...] = ("bash OvsService.sh",)
     shutdown: Tuple[str, ...] = ("killall ovs-vswitchd", "killall ovsdb-server")
 
     @classmethod
@@ -119,7 +119,7 @@ class RyuService(SdnService):
     group: str = "SDN"
     executables: Tuple[str, ...] = ("ryu-manager",)
     configs: Tuple[str, ...] = ("ryuService.sh",)
-    startup: Tuple[str, ...] = ("sh ryuService.sh",)
+    startup: Tuple[str, ...] = ("bash ryuService.sh",)
     shutdown: Tuple[str, ...] = ("killall ryu-manager",)
 
     @classmethod
diff --git a/daemon/core/services/security.py b/daemon/core/services/security.py
index b813579e..788988c9 100644
--- a/daemon/core/services/security.py
+++ b/daemon/core/services/security.py
@@ -16,7 +16,7 @@ class VPNClient(CoreService):
     name: str = "VPNClient"
     group: str = "Security"
     configs: Tuple[str, ...] = ("vpnclient.sh",)
-    startup: Tuple[str, ...] = ("sh vpnclient.sh",)
+    startup: Tuple[str, ...] = ("bash vpnclient.sh",)
     shutdown: Tuple[str, ...] = ("killall openvpn",)
     validate: Tuple[str, ...] = ("pidof openvpn",)
     custom_needed: bool = True
@@ -43,7 +43,7 @@ class VPNServer(CoreService):
     name: str = "VPNServer"
     group: str = "Security"
     configs: Tuple[str, ...] = ("vpnserver.sh",)
-    startup: Tuple[str, ...] = ("sh vpnserver.sh",)
+    startup: Tuple[str, ...] = ("bash vpnserver.sh",)
     shutdown: Tuple[str, ...] = ("killall openvpn",)
     validate: Tuple[str, ...] = ("pidof openvpn",)
     custom_needed: bool = True
@@ -71,7 +71,7 @@ class IPsec(CoreService):
     name: str = "IPsec"
     group: str = "Security"
     configs: Tuple[str, ...] = ("ipsec.sh",)
-    startup: Tuple[str, ...] = ("sh ipsec.sh",)
+    startup: Tuple[str, ...] = ("bash ipsec.sh",)
     shutdown: Tuple[str, ...] = ("killall racoon",)
     custom_needed: bool = True
 
@@ -97,7 +97,7 @@ class Firewall(CoreService):
     name: str = "Firewall"
     group: str = "Security"
     configs: Tuple[str, ...] = ("firewall.sh",)
-    startup: Tuple[str, ...] = ("sh firewall.sh",)
+    startup: Tuple[str, ...] = ("bash firewall.sh",)
     custom_needed: bool = True
 
     @classmethod
@@ -127,7 +127,7 @@ class Nat(CoreService):
     group: str = "Security"
     executables: Tuple[str, ...] = ("iptables",)
     configs: Tuple[str, ...] = ("nat.sh",)
-    startup: Tuple[str, ...] = ("sh nat.sh",)
+    startup: Tuple[str, ...] = ("bash nat.sh",)
     custom_needed: bool = False
 
     @classmethod
diff --git a/daemon/core/services/ucarp.py b/daemon/core/services/ucarp.py
index 8ac92dd3..522eeaf6 100644
--- a/daemon/core/services/ucarp.py
+++ b/daemon/core/services/ucarp.py
@@ -19,7 +19,7 @@ class Ucarp(CoreService):
         UCARP_ETC + "/default-down.sh",
         "ucarpboot.sh",
     )
-    startup: Tuple[str, ...] = ("sh ucarpboot.sh",)
+    startup: Tuple[str, ...] = ("bash ucarpboot.sh",)
     shutdown: Tuple[str, ...] = ("killall ucarp",)
     validate: Tuple[str, ...] = ("pidof ucarp",)
 
diff --git a/daemon/core/services/utility.py b/daemon/core/services/utility.py
index 774c4104..a30d1f62 100644
--- a/daemon/core/services/utility.py
+++ b/daemon/core/services/utility.py
@@ -28,7 +28,7 @@ class UtilService(CoreService):
 class IPForwardService(UtilService):
     name: str = "IPForward"
     configs: Tuple[str, ...] = ("ipforward.sh",)
-    startup: Tuple[str, ...] = ("sh ipforward.sh",)
+    startup: Tuple[str, ...] = ("bash ipforward.sh",)
 
     @classmethod
     def generate_config(cls, node: CoreNode, filename: str) -> str:
@@ -61,7 +61,7 @@ class IPForwardService(UtilService):
 class DefaultRouteService(UtilService):
     name: str = "DefaultRoute"
     configs: Tuple[str, ...] = ("defaultroute.sh",)
-    startup: Tuple[str, ...] = ("sh defaultroute.sh",)
+    startup: Tuple[str, ...] = ("bash defaultroute.sh",)
 
     @classmethod
     def generate_config(cls, node: CoreNode, filename: str) -> str:
@@ -84,7 +84,7 @@ class DefaultRouteService(UtilService):
 class DefaultMulticastRouteService(UtilService):
     name: str = "DefaultMulticastRoute"
     configs: Tuple[str, ...] = ("defaultmroute.sh",)
-    startup: Tuple[str, ...] = ("sh defaultmroute.sh",)
+    startup: Tuple[str, ...] = ("bash defaultmroute.sh",)
 
     @classmethod
     def generate_config(cls, node: CoreNode, filename: str) -> str:
@@ -103,7 +103,7 @@ class DefaultMulticastRouteService(UtilService):
 class StaticRouteService(UtilService):
     name: str = "StaticRoute"
     configs: Tuple[str, ...] = ("staticroute.sh",)
-    startup: Tuple[str, ...] = ("sh staticroute.sh",)
+    startup: Tuple[str, ...] = ("bash staticroute.sh",)
     custom_needed: bool = True
 
     @classmethod
@@ -135,7 +135,7 @@ class SshService(UtilService):
     name: str = "SSH"
     configs: Tuple[str, ...] = ("startsshd.sh", "/etc/ssh/sshd_config")
     dirs: Tuple[str, ...] = ("/etc/ssh", "/var/run/sshd")
-    startup: Tuple[str, ...] = ("sh startsshd.sh",)
+    startup: Tuple[str, ...] = ("bash startsshd.sh",)
     shutdown: Tuple[str, ...] = ("killall sshd",)
     validation_mode: ServiceMode = ServiceMode.BLOCKING
 
@@ -278,7 +278,7 @@ class DhcpClientService(UtilService):
 
     name: str = "DHCPClient"
     configs: Tuple[str, ...] = ("startdhcpclient.sh",)
-    startup: Tuple[str, ...] = ("sh startdhcpclient.sh",)
+    startup: Tuple[str, ...] = ("bash startdhcpclient.sh",)
     shutdown: Tuple[str, ...] = ("killall dhclient",)
     validate: Tuple[str, ...] = ("pidof dhclient",)
 
@@ -561,8 +561,8 @@ class PcapService(UtilService):
 
     name: str = "pcap"
     configs: Tuple[str, ...] = ("pcap.sh",)
-    startup: Tuple[str, ...] = ("sh pcap.sh start",)
-    shutdown: Tuple[str, ...] = ("sh pcap.sh stop",)
+    startup: Tuple[str, ...] = ("bash pcap.sh start",)
+    shutdown: Tuple[str, ...] = ("bash pcap.sh stop",)
     validate: Tuple[str, ...] = ("pidof tcpdump",)
     meta: str = "logs network traffic to pcap packet capture files"
 
@@ -671,7 +671,7 @@ class AtdService(UtilService):
     name: str = "atd"
     configs: Tuple[str, ...] = ("startatd.sh",)
     dirs: Tuple[str, ...] = ("/var/spool/cron/atjobs", "/var/spool/cron/atspool")
-    startup: Tuple[str, ...] = ("sh startatd.sh",)
+    startup: Tuple[str, ...] = ("bash startatd.sh",)
     shutdown: Tuple[str, ...] = ("pkill atd",)
 
     @classmethod
diff --git a/tasks.py b/tasks.py
index 5f52f444..c3e6d2bb 100644
--- a/tasks.py
+++ b/tasks.py
@@ -120,14 +120,14 @@ def install_system(c: Context, os_info: OsInfo, hide: bool) -> None:
     if os_info.like == OsLike.DEBIAN:
         c.run(
             "sudo apt install -y automake pkg-config gcc libev-dev ebtables "
-            "iproute2 ethtool tk python3-tk",
+            "iproute2 ethtool tk python3-tk bash",
             hide=hide
         )
     elif os_info.like == OsLike.REDHAT:
         c.run(
             "sudo yum install -y automake pkgconf-pkg-config gcc gcc-c++ "
             "libev-devel iptables-ebtables iproute python3-devel python3-tkinter "
-            "tk ethtool make",
+            "tk ethtool make bash",
             hide=hide
         )
         # centos 8+ does not support netem by default