AT&T UNIX™PC Unix System V Users Manual - tenox

KSI-I ( 1)
KSH ( 1 )
+ - addition, subtraction
= < > comparison
equality
!= inequality
arithmetic replacement
Sub-expressions in parentheses () are evaluated first and
can be used to override the above precedence rules. The
evaluation within a precedence group is from right to left
for the = operator and from left to right for the others.
A parameter name must be a valid identifier. When
parameter is encountered, the value associated with the
parameter name is substituted and expression evaluation
resumes. Up to nine levels of recursion are permitted.
The return code is 0 if the value of the last expression IS
non-zero, and 1 otherwise.
newgrp [ arg ••• 1
Equivalent to exec newgrp arg •••
print [ -Rnprsu[n 11 [ arg ••• 1
The Korn shell output mechanism. With no flags or with
flag -, the arguments are printed on standard output as
described by echo (l). In raw mode, -R or -r, the escape
conventions of echo are ignored. The -R option will print
all subsequent arguments and options other than -n. The
-p option causes the arguments to be written onto the
pipe of the process spawned with I& instead of standard
output. The -s option causes the arguments to be written
onto the history file instead of standard output. The
-u flag can be used to specify a one digit file descriptor
unit number n on which the output will be placed. The
default is 1. If the flag -n is used, no new-line is added
to the output.
read [ -prsu [ n 11 [ name?prompt 1 [ name ··· 1
The shell input mechanism. One line is read and is broken
up into words using the characters in IFS as separators.
In raw mode, -r, a \ at the end of a line does not
signify line continuation. The first word is assigned to the
first name, the second word to the second name, etc.,
with leftover words assigned to the last name . The -p
option causes the input line to be taken from the input
pipe of a process spawned by the shell using 1&. If the -s
flag is present, the input will be saved as a command in
the history file. The flag -u can be used to specify a
one-digit file descriptor unit to read from. The file
descriptor can be opened with the exec special command.
The default value of n is 0. If name is omitted then
REPLY is used as the default name . The return code is
0 unless an end-of-file is encountered. An end-of-file with
the -p option causes cleanup for this process so that
another can be spawned. If the first argument contains a
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