man pages: fix some typos

cmp.1

@@ -28,7 +28,7 @@ The files are identical.
 .It 1
 The files are different.
 .It > 1
-An error occured.
+An error occurred.
 .El
 .Sh SEE ALSO
 .Xr comm 1 ,

cut.1

@@ -47,7 +47,7 @@ specifies byte | character positions.
 .It Fl d Ar delim
 Use
 .Ar delim
-as field delimiter, which can be an arbitrary string. Default is '\\t'.
+as field delimiter, which can be an arbitrary string. Default is '\et'.
 .It Fl f Ar list
 .Ar list
 specifies field numbers. Lines not containing field

expr.1

@@ -29,7 +29,7 @@ has the recursive form
 .Pp
 With
 .Sy operand
-being in oder of increasing precedence:
+being in order of increasing precedence:
 .Bl -tag -width Ds
 .It |
 Evaluate to
@@ -67,7 +67,7 @@ If
 .Sy expr1
 and
 .Sy expr2
-are integers, evaluate to their mulitplication, division or remainder.
+are integers, evaluate to their multiplication, division or remainder.
 .It :
 Evaluate to the number of characters matched in
 .Sy expr1
@@ -91,7 +91,7 @@ is an empty string or 0
 .Ar expression
 is invalid
 .It > 2
-An error occured
+An error occurred
 .El
 .Sh SEE ALSO
 .Xr test 1

strings.1

@@ -3,7 +3,7 @@
 .Os sbase
 .Sh NAME
 .Nm strings
-.Nd print the strings of pritable characters in files
+.Nd print the strings of printable characters in files
 .Sh SYNOPSIS
 .Nm
 .Op Ar file ...

xargs.1

@@ -3,7 +3,7 @@
 .Os sbase
 .Sh NAME
 .Nm xargs
-.Nd constuct argument list(s) and execute command
+.Nd construct argument list(s) and execute command
 .Sh SYNOPSIS
 .Nm
 .Op Fl n Ar maxargs