more robust with spaces

Author: scivision

+stdlib/+sys/disk_available.m

@@ -8,9 +8,9 @@
   dl = extractBefore(stdlib.absolute(p), 2);
   cmd = "pwsh -c (Get-Volume -DriveLetter " + dl + ").SizeRemaining";
 elseif ismac()
-  cmd = "df -k " + p + " | awk 'NR==2 {print $4*1024}'";
+  cmd = sprintf('df -k "%s" | awk ''NR==2 {print $4*1024}''', p);
 else
-  cmd = "df -B1 " + p + " | awk 'NR==2 {print $4}'";
+  cmd = sprintf('df -B1 "%s" | awk ''NR==2 {print $4}''', p);
 end
 
 [s, t] = system(cmd);

+stdlib/+sys/disk_capacity.m

@@ -8,9 +8,9 @@
   dl = extractBefore(stdlib.absolute(p), 2);
   cmd = "pwsh -c (Get-Volume -DriveLetter " + dl + ").Size";
 elseif ismac()
-  cmd = "df -k " + p + " | awk 'NR==2 {print $2*1024}'";
+  cmd = sprintf('df -k "%s" | awk ''NR==2 {print $2*1024}''', p);
 else
-  cmd = "df -B1 " + p + " | awk 'NR==2 {print $2}'";
+  cmd = sprintf('df -B1 "%s" | awk ''NR==2 {print $2}''', p);
 end
 
 [s, t] = system(cmd);

+stdlib/+sys/is_removable.m

@@ -6,10 +6,11 @@
   drive = stdlib.root_name(filepath);
   cmd1 = strcat('wmic logicaldisk where "DeviceID=''', drive, '''" get DriveType');
 else
-  cmd1 = "df " + filepath + " | tail -n 1 | awk '{print $1}'";
+  cmd1 = sprintf('df "%s" | tail -n 1 | awk ''{print $1}''', filepath);
 end
 [s1, m1] = system(cmd1);
 if s1 ~= 0
+  warning('stdlib:is_removable:OSError', '%s', m1)
   return
 end