diff --git a/DBus-service.md b/DBus-service.md
index 3dc318b..94010e2 100644
--- a/DBus-service.md
+++ b/DBus-service.md
@@ -34,7 +34,7 @@ You should see a response like:
 
 If the response is empty, you must manually restart the DBus service and set the environment variable:
 
-```
+```shell
 brew services restart dbus
 export DBUS_LAUNCHD_SESSION_BUS_SOCKET=$(launchctl getenv DBUS_LAUNCHD_SESSION_BUS_SOCKET)
 ```
@@ -42,7 +42,7 @@ export DBUS_LAUNCHD_SESSION_BUS_SOCKET=$(launchctl getenv DBUS_LAUNCHD_SESSION_B
 Note that this will work only from a normal Macintosh desktop session.
 
 To use the system bus:
-```
+```bash
 export DBUS_SYSTEM_BUS_ADDRESS=unix:path=/usr/local/var/run/dbus/system_bus_socket
 ```
 This works either from a desktop session or an SSH session.
@@ -63,7 +63,7 @@ ps auxw|grep dbus|grep $(whoami)|grep session
 
 If it is running, you can rely on the notion that the most recent listener in /private/tmp is assigned to this version of dbus. (This might not be 100% reliable in the future, so proceed at your own risk.) Use the command:
 
-```
+```bash
 export DBUS_LAUNCHD_SESSION_BUS_SOCKET=$(find /private/tmp -user $(whoami) -type s -name unix_domain_listener -print0 | xargs -0 ls -rt|tail -n 1)
 ```
 
@@ -84,7 +84,7 @@ In order for `dbus-send` to work correctly, it needs to either be started from a
 
 The command to set the environment variable is:
 
-```
+```bash
 export DBUS_SESSION_BUS_ADDRESS=unix:path=$DBUS_LAUNCHD_SESSION_BUS_SOCKET
 ```
 
@@ -133,21 +133,21 @@ The groupId is handled as an array of bytes rather than a Base64 string. (See [#
 
 The byte array can be obtained from a base64-encoded string (which looks like ixZI93QgqmjNpM8V+E0= and can be found in signal-cli's config file, by default in ~/.local/share/signal-cli/data/<PHONE_NUMBER>.d/group-cache/). Note that any underscore must be converted into a slash (/) character to provide a valid base64-encoded string. To decode it to byte array, you can use python:
 
-```
+```bash
 python3 -c 'import base64; print(",".join(str(i) for i in base64.b64decode("ixZI93QgqmjNpM8V+E0=".replace("_","/"))))'
 ```
 or, using Bash shell syntax:
-```
+```bash
 echo "ixZI93QgqmjNpM8V+E0="|sed 's/_/\//g' | base64 -d |xxd -p -c1|while read i; do printf "%d " $((16#${i})); done|sed 's/ /,/g'|sed 's/,$/\n/g'
 ```
 
 To reverse the process:
 
-```
+```bash
 python3 -c 'import base64; print(base64.b64encode(bytearray([139,22,72,247,116,32,170,104,205,164,207,21,248,77])))'
 ```
 ... or using Bash ...
-```
+```bash
 echo "139,22,72,247,116,32,170,104,205,164,207,21,248,77"|sed 's/,/ /g'|while read i; do printf "%02x" ${i}; done|sed 's/^/00000000: /g'|xxd -r -c 256|base64
 ```