1diff --git a/src/orca/ax_utilities_application.py b/src/orca/ax_utilities_application.py
2index 60c172f78..e8dadf76d 100644
3--- a/src/orca/ax_utilities_application.py
4+++ b/src/orca/ax_utilities_application.py
5@@ -189,7 +189,7 @@ class AXUtilitiesApplication:
6
7 pid = AXUtilitiesApplication.get_process_id(app)
8 try:
9- state = subprocess.getoutput(f"cat /proc/{pid}/status | grep State")
10+ state = subprocess.getoutput(f"@cat@ /proc/{pid}/status | @grep@ State")
11 state = state.split()[1]
12 except Exception as error:
13 tokens = [f"AXUtilitiesApplication: Exception checking state of pid {pid}: {error}"]
14diff --git a/src/orca/debugging_tools_manager.py b/src/orca/debugging_tools_manager.py
15index 740f1a690..85f74d2dc 100644
16--- a/src/orca/debugging_tools_manager.py
17+++ b/src/orca/debugging_tools_manager.py
18@@ -243,7 +243,7 @@ class DebuggingToolsManager:
19 else:
20 name = AXObject.get_name(app) or "[DEAD]"
21 try:
22- cmdline = subprocess.getoutput(f"cat /proc/{pid}/cmdline")
23+ cmdline = subprocess.getoutput(f"@cat@ /proc/{pid}/cmdline")
24 except Exception as error:
25 cmdline = f"EXCEPTION: {error}"
26 else:
27diff --git a/src/orca/orca_bin.py.in b/src/orca/orca_bin.py.in
28index 6cb4c7772..903b344f0 100755
29--- a/src/orca/orca_bin.py.in
30+++ b/src/orca/orca_bin.py.in
31@@ -186,7 +186,7 @@ def inGraphicalDesktop():
32 def otherOrcas():
33 """Returns the pid of any other instances of Orca owned by this user."""
34
35- openFile = subprocess.Popen('pgrep -u %s -x orca' % os.getuid(),
36+ openFile = subprocess.Popen('@pgrep@ -u %s -x orca' % os.getuid(),
37 shell=True,
38 stdout=subprocess.PIPE).stdout
39 pids = openFile.read()
40diff --git a/src/orca/orca_modifier_manager.py b/src/orca/orca_modifier_manager.py
41index 3407be009..452297a3f 100644
42--- a/src/orca/orca_modifier_manager.py
43+++ b/src/orca/orca_modifier_manager.py
44@@ -230,7 +230,7 @@ class OrcaModifierManager:
45 debug.print_message(debug.LEVEL_INFO, msg, True)
46
47 self.unset_orca_modifiers(reason)
48- with subprocess.Popen(["xkbcomp", os.environ["DISPLAY"], "-"],
49+ with subprocess.Popen(["@xkbcomp@", os.environ["DISPLAY"], "-"],
50 stdout=subprocess.PIPE, stderr=subprocess.DEVNULL) as p:
51 self._original_xmodmap, _ = p.communicate()
52 self._create_orca_xmodmap()
53@@ -262,7 +262,7 @@ class OrcaModifierManager:
54 return
55
56 self._caps_lock_cleared = False
57- with subprocess.Popen(["xkbcomp", "-w0", "-", os.environ["DISPLAY"]],
58+ with subprocess.Popen(["@xkbcomp@", "-w0", "-", os.environ["DISPLAY"]],
59 stdin=subprocess.PIPE, stdout=None, stderr=None) as p:
60 p.communicate(self._original_xmodmap)
61
62@@ -325,7 +325,7 @@ class OrcaModifierManager:
63 debug.print_message(debug.LEVEL_INFO, msg, True)
64
65
66- with subprocess.Popen(["xkbcomp", "-w0", "-", os.environ["DISPLAY"]],
67+ with subprocess.Popen(["@xkbcomp@", "-w0", "-", os.environ["DISPLAY"]],
68 stdin=subprocess.PIPE, stdout=None, stderr=None) as p:
69 p.communicate(bytes('\n'.join(lines), 'UTF-8'))
70 else: