HP-UX Reference (11i v3 07/02) - 5 Miscellaneous Topics (vol 9)

l
limits(5) limits(5)
Max number of entries in system lock table
LOCK_MAX 32 +-*
Number of bits in a
longLONG_BIT 32
+
Max decimal value of a
longLONG_MAX 2147483647
+
Min decimal value of a longLONG_MIN -2147483648
-
Max number of bytes in terminal canonical
input line
MAX_CANON 512 +*
Max number of bytes in terminal input queue
MAX_CHAR MAX_INPUT =*
Max number of bytes in terminal input queue
MAX_INPUT 512 +*
Max number of bytes in a path name component
NAME_MAX 14 +*
Max value of "digits" in calls to the NLS
printf(3S) and scanf(3S) functions
NL_ARGMAX 9 =
Max message number in an NLS message cata-
log
NL_MSGMAX 32767 +
Max set number in an NLS message catalog
NL_SETMAX 255 +
Max number of bytes in an NLS message string
NL_TEXTMAX 8192 +
Max number of supplementary groups per pro-
cess
NGROUPS_MAX 20 ++
Max number of files a process can have openOPEN_MAX 60 +*
Max number of chars in a passwordPASS_MAX 8
+
Max number of characters in a path name
excluding the null terminator
PATH_MAX 1023 +*
Max value for a process IDPID_MAX 30000 +
Max number of bytes atomic in write to a pipePIPE_BUF 8192 +*
Max number of bytes writable to a pipe in one
write
PIPE_MAX INT_MAX +
Max number of simultaneous processes on sys-
tem
PROC_MAX 84 +-*
Max integer value of a signed charSCHAR_MAX 127 =
Min integer value of a signed charSCHAR_MIN -128 =
Max decimal value of a shortSHRT_MAX 32767 +
Min decimal value of a shortSHRT_MIN -32768 -
Number of bytes in a physical I/O blockSTD_BLK 512 +
Max process ID of system processesSYSPID_MAX 4
+-*
Length of strings returned by uname(2)
SYS_NMLN 8 +*
Max number of files open on systemSYS_OPEN 120 +-*
Max number of unique names generated by
tmpnam(3S)
TMP_MAX 17576 +
Max integer value of an unsigned charUCHAR_MAX 255 =
Smallest unattainable value for a user or group
ID
UID_MAX 2147483647 +
Max decimal value of an unsigned intUINT_MAX 4294967295 +
Max decimal value of an unsigned longULONG_MAX 4294967295 +
Max decimal value of an unsigned shortUSHRT_MAX 65535 +
Max decimal value of an unsigned intUSI_MAX UINT_MAX =*
Number of bits in a "word" (int)WORD_BIT 32 +
EXAMPLES
UID_MAX has an HP-UX value of 2147483647 +, which means that on all HP-UX systems the smallest
unattainable value for a user or group ID is at least 2147483647. A particular system might be capable of
supporting more than 2147483647user or group IDs, in which case its <limits.h> file sets UID_MAX to
a higher value; however, any application assuming such a higher value is not guaranteed to be portable to
all HP-UX systems.
HP-UX 11i Version 3: February 2007 − 2 − Hewlett-Packard Company 237