getconf
User Commands getconf(1)NAME
getconf - get configuration valuesSYNOPSIS
getconf [ -v specification ] system_var getconf [ -v specification ] path_var pathname getconf -aDESCRIPTION
In the first synopsis form, the getconf utility will write to the standard output the value of the variable specified by system_var, in accordance with specification if the -v option is used. In the second synopsis form, getconf will write to the stan- dard 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 will write to the stan- dard output the names of the current system configuration variables. The value of each configuration variable will be determined as if it were obtained by calling the function from which it is defined to be available. The value will reflect condi- tions in the current operating environment.OPTIONS
The following options are supported: -a Writes the names of the current system configuration variables to the standard output. -v specification Gives the specification which governs the selection of values for configuration variables.OPERANDS
The following operands are supported: 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 SunOS 5.8 Last change: 30 Jan 1998 1 User Commands getconf(1) 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 following 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 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_UPE POSIX2_VERSION _POSIX_ARG_MAX _POSIX_CHILD_MAX _POSIX_JOB_CONTROL _POSIX_LINK_MAX _POSIX_MAX_CANON _POSIX_MAX_INPUT _POSIX_NAME_MAX _POSIX_NGROUPS_MAX _POSIX_OPEN_MAX _POSIX_PATH_MAX _POSIX_PIPE_BUF _POSIX_SAVED_IDS _POSIX_SSIZE_MAX _POSIX_STREAM_MAX _POSIX_TZNAME_MAX _POSIX_VERSION 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 SunOS 5.8 Last change: 30 Jan 1998 2 User Commands getconf(1) 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_LEGACY _XOPEN_SHM _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 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 SunOS 5.8 Last change: 30 Jan 1998 3 User Commands getconf(1) echo Error in getconf. fi Note that 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 conditions when the pro- gram is executed. ENVIRONMENT VARIABLES See environ(5) for descriptions of the following environment variables that affect the execution of getconf: LC_CTYPE, LC_MESSAGES, and NLSPATH. 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 attri- butes: ____________________________________________________________ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | |_____________________________|_____________________________| | Availability | SUNWcsu | |_____________________________|_____________________________|SEE ALSO
pathconf(2), confstr(3C), sysconf(3C), attributes(5), environ(5), largefile(5) SunOS 5.8 Last change: 30 Jan 1998 4