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OpenSolaris 2009.06 - man page for getconf (opensolaris section 1)

getconf(1)							   User Commands							getconf(1)

NAME
getconf - get configuration values
SYNOPSIS
/usr/bin/getconf, /usr/xpg4/bin/getconf, /usr/xpg6/bin/getconf /usr/bin/getconf [-v specification] system_var /usr/bin/getconf [-v specification] path_var pathname /usr/bin/getconf -a /usr/xpg4/bin/getconf [-v specification] system_var /usr/xpg4/bin/getconf [-v specification] path_var pathname /usr/xpg4/bin/getconf -a /usr/xpg6/bin/getconf [-v specification] system_var /usr/xpg6/bin/getconf [-v specification] path_var pathname /usr/xpg6/bin/getconf -a ksh93 getconf [-abdlpqrtw] [-c RE] [-n RE] [-s RE] [-v name][name [path [value]] ...]
DESCRIPTION
/usr/bin/getconf, /usr/xpg4/bin/getconf, /usr/xpg6/bin/getconf In the first synopsis form, the getconf utility writes to the standard output the value of the variable specified by system_var, in accor- dance with specification if the -v option is used. In the second synopsis form, getconf writes to the standard output the value of the variable specified by path_var for the path specified by pathname, in accordance with specification if the -v option is used. In the third synopsis form, config writes to the standard output the names of the current system configuration variables. The value of each configuration variable is determined as if it were obtained by calling the function from which it is defined to be avail- able. The value reflects conditions in the current operating environment. ksh93 The getconf built-in in ksh93 is associated with the /bin and /usr/bin paths. It is invoked when getconf is executed without a pathname prefix and the pathname search finds a /bin/getconf or /usr/bin/getconf executable. getconf displays the system configuration value for name. If name is a filesystem specific variable, the value is determined relative to path, or, the current directory, if path is omitted. If value is specified, getconf attempts to change the process local value to value. - can be used in place of path when it is not relevant. Only writable variables can be set. readonly variables cannot be changed. The current value for name is written to the standard output. If name is valid but undefined, undefined is written to the standard output. If name is invalid or an error occurs in determining its value, a diagnostic is written to standard error and getconf exits with a non-zero exit status. More than one variable can be set or queried by providing the name path value 3-tuple for each variable, specifying - for value when query- ing. If no operands are specified, all known variables are written in name=value form to the standard output, one per line. Only one of --call, --name or --standard can be specified.
OPTIONS
/usr/bin/getconf, /usr/xpg4/bin/getconf, /usr/xpg6/bin/getconf The following options are supported by /usr/bin/getconf, /usr/xpg4/bin/getconf, and /usr/xpg6/bin/getconf -a Writes the names of the current system configuration variables to the standard output. -vspecification Gives the specification which governs the selection of values for configuration variables. ksh93 The following options are supported by the getconf built-in command in ksh93: -a Call the native getconf -a. --all -b List base variable name without call and standard prefixes. --base -c Display variables with call prefix that matches RE. The call prefixes are: --call=RE o CS confstr(3C), o PC pathconf(2) o SC sysconf(3C) o SI sysinfo(2) o XX Constant value -d Only display defined values when no operands are specified. --defined -l List variable names in lower case. --lowercase -n Display variables with names that match RE. --name=RE -p Display the named writable variables and values in a form that can be directly executed by ksh93(1) to set the val- --portable ues. If name is omitted, lists all writable variables. -q Quote values ("..."). --quote -r Display the named readonly variables in name=value form. If name is omitted, lists all readonly variables. --readonly -s Display variables with standard prefix that matches RE. Use the --table option to view all standard prefixes, --standard=RE including local additions. The standard prefixes available on all systems are: AES AST C GNU POSIX SVID XBS5 XOPEN XPG -t Display the internal table that contains the name, standard, standard section, and system call symbol prefix for --table each variable. -w Display the named writable variables in name=value form. If name is omitted, lists all writable variables. --writable -v Call the native getconf -v name. --specification=name
OPERANDS
/usr/bin/getconf, /usr/xpg4/bin/getconf, /usr/xpg6/bin/getconf The following operands are supported by /usr/bin/getconf, /usr/xpg4/bin/getconf, and /usr/xpg6/bin/getconf: path_var A name of a configuration variable whose value is available from the pathconf(2) function. All of the values in the following table are supported: LINK_MAX NAME_MAX _POSIX_CHOWN_RESTRICTED MAX_CANON PATH_MAX _POSIX_NO_TRUNC MAX_INPUT PIPE_BUF _POSIX_VDISABLE pathname A path name for which the variable specified by path_var is to be determined. system_var A name of a configuration variable whose value is available from confstr(3C) or sysconf(3C). All of the values in the follow- ing table are supported: ARG_MAX BC_BASE_MAX BC_DIM_MAX BC_SCALE_MAX BC_STRING_MAX CHAR_BIT CHARCLASS_NAME_MAX CHAR_MAX CHAR_MIN CHILD_MAX CLK_TCK COLL_WEIGHTS_MAX CS_PATH EXPR_NEST_MAX HOST_NAME_MAX INT_MAX INT_MIN LFS64_CFLAGS LFS64_LDFLAGS LFS64_LIBS LFS64_LINTFLAGS LFS_CFLAGS LFS_LDFLAGS LFS_LIBS LFS_LINTFLAGS LINE_MAX LONG_BIT LONG_MAX LONG_MIN MB_LEN_MAX NGROUPS_MAX NL_ARGMAX NL_LANGMAX NL_MSGMAX NL_NMAX NL_SETMAX NL_TEXTMAX NZERO OPEN_MAX POSIX2_BC_BASE_MAX POSIX2_BC_DIM_MAX POSIX2_BC_SCALE_MAX POSIX2_BC_STRING_MAX POSIX2_C_BIND POSIX2_C_DEV POSIX2_CHAR_TERM POSIX2_COLL_WEIGHTS_MAX POSIX2_C_VERSION POSIX2_EXPR_NEST_MAX POSIX2_FORT_DEV POSIX2_FORT_RUN POSIX2_LINE_MAX POSIX2_LOCALEDEF POSIX2_RE_DUP_MAX POSIX2_SW_DEV POSIX2_SYMLINKS POSIX2_UPE POSIX2_VERSION POSIX_ALLOC_SIZE_MIN POSIX_REC_INCR_XFER_SIZE POSIX_REC_MAX_XFER_SIZE POSIX_REC_MIN_XFER_SIZE POSIX_REC_XFER_ALIGN POSIX_V6_ILP32_OFF32 POSIX_V6_ILP32_OFF32_CFLAGS POSIX_V6_ILP32_OFF32_LDFLAGS POSIX_V6_ILP32_OFF32_LIBS POSIX_V6_ILP32_OFFBIG POSIX_V6_ILP32_OFFBIG_CFLAGS POSIX_V6_ILP32_OFFBIG_LDFLAGS POSIX_V6_ILP32_OFFBIG_LIBS POSIX_V6_LP64_OFF64 POSIX_V6_LP64_OFF64_CFLAGS POSIX_V6_LP64_OFF64_LDFLAGS POSIX_V6_LP64_OFF64_LIBS POSIX_V6_LPBIG_OFFBIG POSIX_V6_LPBIG_OFFBIG_CFLAGS POSIX_V6_LPBIG_OFFBIG_LDFLAGS POSIX_V6_LPBIG_OFFBIG_LIBS POSIX_V6_WIDTH_RESTRICTED_ENVS SYMLINK_MAX SYMLOOP_MAX _POSIX2_BC_BASE_MAX _POSIX2_BC_DIM_MAX _POSIX2_BC_SCALE_MAX _POSIX2_BC_STRING_MAX _POSIX2_CHARCLASS_NAME_MAX _POSIX2_CHAR_TERM _POSIX2_COLL_WEIGHTS_MAX _POSIX2_C_BIND _POSIX2_C_DEV _POSIX2_C_VERSION _POSIX2_EXPR_NEST_MAX _POSIX2_FORT_DEV _POSIX2_FORT_RUN _POSIX2_LINE_MAX _POSIX2_LOCALEDEF _POSIX2_PBS _POSIX2_PBS_ACCOUNTING _POSIX2_PBS_CHECKPOINT _POSIX2_PBS_LOCATE _POSIX2_PBS_MESSAGE _POSIX2_PBS_TRACK _POSIX2_RE_DUP_MAX _POSIX2_SW_DEV _POSIX2_UPE _POSIX2_VERSION _POSIX_ADVISORY_INFO _POSIX_AIO_LISTIO_MAX _POSIX_AIO_MAX _POSIX_ARG_MAX _POSIX_ASYNC_IO _POSIX_BARRIERS _POSIX_CHILD_MAX _POSIX_CLOCKRES_MIN _POSIX_CLOCK_SELECTION _POSIX_CPUTIME _POSIX_DELAYTIMER_MAX _POSIX_HOST_NAME_MAX _POSIX_IPV6 _POSIX_JOB_CONTROL _POSIX_LINK_MAX _POSIX_LOGIN_NAME_MAX _POSIX_MAX_CANON _POSIX_MAX_INPUT _POSIX_MONOTONIC_CLOCK _POSIX_MQ_OPEN_MAX _POSIX_MQ_PRIO_MAX _POSIX_NAME_MAX _POSIX_NGROUPS_MAX _POSIX_OPEN_MAX _POSIX_PATH_MAX _POSIX_PIPE_BUF _POSIX_PRIO_IO _POSIX_RAW_SOCKETS _POSIX_READER_WRITER_LOCKS _POSIX_REGEXP _POSIX_RE_DUP_MAX _POSIX_RTSIG_MAX _POSIX_SAVED_IDS _POSIX_SEM_NSEMS_MAX _POSIX_SEM_VALUE_MAX _POSIX_SHELL _POSIX_SIGQUEUE_MAX _POSIX_SPAWN _POSIX_SPIN_LOCKS _POSIX_SPORADIC_SERVER _POSIX_SSIZE_MAX _POSIX_SS_REPL_MAX _POSIX_STREAM_MAX _POSIX_SYMLINK_MAX _POSIX_SYMLOOP_MAX _POSIX_SYNC_IO _POSIX_THREAD_ATTR_STACKADDR _POSIX_THREAD_ATTR_STACKSIZE _POSIX_THREAD_CPUTIME _POSIX_THREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_KEYS_MAX _POSIX_THREAD_PRIORITY_SCHEDULING _POSIX_THREAD_PRIO_INHERIT _POSIX_THREAD_PRIO_PROTECT _POSIX_THREAD_PROCESS_SHARED _POSIX_THREAD_SAFE_FUNCTIONS _POSIX_THREAD_SPORADIC_SERVER _POSIX_THREAD_THREADS_MAX _POSIX_TIMEOUTS _POSIX_TIMER_MAX _POSIX_TRA_POSIX_TIMER_MAXCE _POSIX_TRACE_EVENT_FILTER _POSIX_TRACE_EVENT_NAME_MAX _POSIX_TRACE_INHERIT _POSIX_TRACE_LOG _POSIX_TRACE_NAME_MAX _POSIX_TRACE_SYS_MAX _POSIX_TRACE_USER_EVENT_MAX _POSIX_TTY_NAME_MAX _POSIX_TYPED_MEMORY_OBJECTS _POSIX_TZNAME_MAX _POSIX_VERSION _POSIX_V6_ILP32_OFF32 _POSIX_V6_ILP32_OFFBIG _POSIX_V6_LP64_OFF64 _POSIX_V6_LPBIG_OFFBIG _V6_ILP32_OFF32 _V6_ILP32_OFFBIG _V6_LP64_OFF64 _V6_LPBIG_OFFBIG RE_DUP_MAX SCHAR_MAX SCHAR_MIN SHRT_MAX SHRT_MIN SSIZE_MAX STREAM_MAX TMP_MAX TZNAME_MAX UCHAR_MAX UINT_MAX ULONG_MAX USHRT_MAX WORD_BIT XBS5_ILP32_OFF32 XBS5_ILP32_OFF32_CFLAGS XBS5_ILP32_OFF32_LDFLAGS XBS5_ILP32_OFF32_LIBS XBS5_ILP32_OFF32_LINTFLAGS XBS5_ILP32_OFFBIG XBS5_ILP32_OFFBIG_CFLAGS XBS5_ILP32_OFFBIG_LDFLAGS XBS5_ILP32_OFFBIG_LIBS XBS5_ILP32_OFFBIG_LINTFLAGS XBS5_LP64_OFF64 XBS5_LP64_OFF64_CFLAGS XBS5_LP64_OFF64_LDFLAGS XBS5_LP64_OFF64_LIBS XBS5_LP64_OFF64_LINTFLAGS XBS5_LPBIG_OFFBIG XBS5_LPBIG_OFFBIG_CFLAGS XBS5_LPBIG_OFFBIG_LDFLAGS XBS5_LPBIG_OFFBIG_LIBS XBS5_LPBIG_OFFBIG_LINTFLAGS _XOPEN_CRYPT _XOPEN_ENH_I18N _XOPEN_IOV_MAX _XOPEN_LEGACY _XOPEN_NAME_MAX _XOPEN_PATH_MAX _XOPEN_SHM _XOPEN_STREAMS _XOPEN_VERSION _XOPEN_XCU_VERSION _XOPEN_XPG2 _XOPEN_XPG3 _XOPEN_XPG4 The symbol PATH also is recognized, yielding the same value as the confstr() name value CS_PATH.
USAGE
See largefile(5) for the description of the behavior of /usr/bin/getconf when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).
EXAMPLES
Example 1 Writing the Value of a Variable This example illustrates the value of {NGROUPS_MAX}: example% getconf NGROUPS_MAX Example 2 Writing the Value of a Variable for a Specific Directory This example illustrates the value of NAME_MAX for a specific directory: example% getconf NAME_MAX /usr Example 3 Dealing with Unspecified Results This example shows how to deal more carefully with results that might be unspecified: if value=$(getconf PATH_MAX /usr); then if [ "$value" = "undefined" ]; then echo PATH_MAX in /usr is infinite. else echo PATH_MAX in /usr is $value. fi else echo Error in getconf. fi For example: sysconf(_SC_POSIX_C_BIND); and system("getconf POSIX2_C_BIND"); in a C program could give different answers. The sysconf call supplies a value that corresponds to the conditions when the program was either compiled or executed, depending on the implementation. The system call to getconf always supplies a value corresponding to condi- tions when the program is executed.
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of getconf: LANG, LC_ALL, LC_CTYPE, LC_MESSAGES, and NLSPATH. The following environment variable is supported by the ksh93 built-in getconf command: _AST_FEATURES Local writable values that are different from the default are stored in the _AST_FEATURES environment variable. The _AST_FEATURES value is a space-separated list of name path value 3-tuples, where name is the system configuration name, path is the corresponding path, - if no path is applicable, and value is the system configuration value.
EXIT STATUS
The following exit values are returned: 0 The specified variable is valid and information about its current state was written successfully. >0 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes: /usr/bin/getconf, /usr/xpg4/bin/getconf, /usr/xpg6/bin/getconf +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ |Standard |See standards(5). | +-----------------------------+-----------------------------+ ksh93 +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |See below. | +-----------------------------+-----------------------------+ The ksh93 built-in binding to /bin and /usr/bin is Volatile. The built-in command-line interface is Committed.
SEE ALSO
ksh93(1), sh(1), pathconf(2), sysinfo(2), confstr(3C), sysconf(3C), attributes(5), environ(5), largefile(5), standards(5) SunOS 5.11 2 Nov 2007 getconf(1)