[ce14c07] | 1 | <sect2><title> </title><para> </para></sect2>
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| 2 |
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[896cf74] | 3 | <sect2><title>Descriptions</title>
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[8fcc2c0] | 4 |
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[087e584] | 5 | <para>(Last checked against version &glibc-contversion;.)</para>
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[6370fa6] | 6 |
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[ab28d5f] | 7 | <sect3><title>Program file descriptions</title>
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[bdc08c1] | 8 |
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| 9 | <sect4><title>catchsegv</title>
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[227d26b] | 10 | <para>catchsegv can be used to create a stack trace when a program
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| 11 | terminates with a segmentation fault.</para></sect4>
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[bdc08c1] | 12 |
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| 13 | <sect4><title>gencat</title>
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| 14 | <para>gencat generates message catalogues.</para></sect4>
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| 15 |
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| 16 | <sect4><title>getconf</title>
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[227d26b] | 17 | <para>getconf displays the system configuration values for filesystem
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| 18 | specific variables.</para></sect4>
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[bdc08c1] | 19 |
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| 20 | <sect4><title>getent</title>
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| 21 | <para>getent gets entries from an administrative database.</para></sect4>
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| 22 |
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| 23 | <sect4><title>glibcbug</title>
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| 24 | <para>glibcbug creates a bug report about glibc and and mails it to the
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| 25 | bug email address.</para></sect4>
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| 26 |
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| 27 | <sect4><title>iconv</title>
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| 28 | <para>iconv performs character set conversion.</para></sect4>
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| 29 |
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| 30 | <sect4><title>iconvconfig</title>
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| 31 | <para>iconvconfig creates fastloading iconv module
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| 32 | configuration file.</para></sect4>
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| 33 |
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| 34 | <sect4><title>ldconfig</title>
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| 35 | <para>ldconfig configures the dynamic linker run time bindings.</para></sect4>
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| 36 |
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| 37 | <sect4><title>ldd</title>
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| 38 | <para>ldd prints the shared libraries required by each program or shared
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| 39 | library specified on the command line.</para></sect4>
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| 40 |
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| 41 | <sect4><title>lddlibc4</title>
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[02ef5b58] | 42 | <para>lddlibc4 assists ldd with object files.</para></sect4>
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[bdc08c1] | 43 |
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| 44 | <sect4><title>locale</title>
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[227d26b] | 45 | <para>locale is a Perl program which tells the compiler to enable
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| 46 | (or disable) the use of POSIX locales for built-in operations.</para></sect4>
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[bdc08c1] | 47 |
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| 48 | <sect4><title>localedef</title>
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| 49 | <para>localedef compiles locale specifications.</para></sect4>
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| 50 |
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| 51 | <sect4><title>mtrace</title>
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[087e584] | 52 | <para>(No description available yet.)</para></sect4>
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[bdc08c1] | 53 |
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| 54 | <sect4><title>nscd</title>
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| 55 | <para>nscd is a daemon that provides a cache for the most common name
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| 56 | service requests.</para></sect4>
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| 57 |
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| 58 | <sect4><title>nscd_nischeck</title>
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[227d26b] | 59 | <para>nscd_nischeck checks whether or not secure mode is necessary for
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| 60 | NIS+ lookup.</para></sect4>
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[bdc08c1] | 61 |
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| 62 | <sect4><title>pcprofiledump</title>
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| 63 | <para>pcprofiledump dumps information generated by
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| 64 | PC profiling.</para></sect4>
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| 65 |
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| 66 | <sect4><title>pt_chown</title>
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| 67 | <para>pt_chown sets the owner, group and access permission of the
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| 68 | slave pseudo terminal corresponding to the master pseudo terminal passed
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[2c094d6] | 69 | on file descriptor `3'. This is the helper program for the `grantpt'
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| 70 | function. It is not intended to be run directly from the command
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[227d26b] | 71 | line.</para></sect4>
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[bdc08c1] | 72 |
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| 73 | <sect4><title>rpcgen</title>
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[227d26b] | 74 | <para>rpcgen generates C code to implement the RPC protocol.</para></sect4>
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[bdc08c1] | 75 |
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| 76 | <sect4><title>rpcinfo</title>
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[227d26b] | 77 | <para>rpcinfo makes an RPC call to an RPC server.</para></sect4>
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[bdc08c1] | 78 |
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| 79 | <sect4><title>sln</title>
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[2c094d6] | 80 | <para>sln symbolically links dest to source. It is statically linked,
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| 81 | needing no dynamic linking at all. Thus sln is useful to make symbolic
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[bdc08c1] | 82 | links to dynamic libraries if the dynamic linking system for some reason
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| 83 | is nonfunctional.</para></sect4>
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| 84 |
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| 85 | <sect4><title>sprof</title>
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| 86 | <para>sprof reads and displays shared object profiling data.</para></sect4>
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| 87 |
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| 88 | <sect4><title>tzselect</title>
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| 89 | <para>tzselect asks the user for information about the current location and
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| 90 | outputs the resulting time zone description to standard output.</para></sect4>
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| 91 |
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| 92 | <sect4><title>xtrace</title>
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| 93 | <para>xtrace traces execution of program by printing the currently executed
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| 94 | function.</para></sect4>
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| 95 |
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| 96 | <sect4><title>zdump</title>
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| 97 | <para>zdump is the time zone dumper.</para></sect4>
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[6370fa6] | 98 |
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[bdc08c1] | 99 | <sect4><title>zic</title>
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| 100 | <para>zic is the time zone compiler.</para></sect4>
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[6370fa6] | 101 |
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[bdc08c1] | 102 | </sect3>
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| 103 |
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[ab28d5f] | 104 | <sect3><title>Library file descriptions</title>
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[bdc08c1] | 105 |
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| 106 | <sect4><title>ld.so</title>
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| 107 | <para>ld.so is the helper program for shared library
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| 108 | executables.</para></sect4>
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| 109 |
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[9cb6916] | 110 | <sect4><title>libBrokenLocale</title>
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[227d26b] | 111 | <para>Used by software, such as Mozilla, to solve broken locales.</para></sect4>
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[bdc08c1] | 112 |
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[c5ba0d6] | 113 | <sect4><title>libSegFault</title>
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[227d26b] | 114 | <para>libSegFault is a segmentation fault signal handler. It tries to catch
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| 115 | segfaults.</para></sect4>
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[bdc08c1] | 116 |
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[9cb6916] | 117 | <sect4><title>libanl</title>
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[227d26b] | 118 | <para>libanl is an asynchronous name lookup library.</para></sect4>
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[bdc08c1] | 119 |
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[c5ba0d6] | 120 | <sect4><title>libbsd-compat</title>
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[02ef5b58] | 121 | <para>libbsd-compat provides the portability needed in order to run certain
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| 122 | programs in Linux.</para></sect4>
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[bdc08c1] | 123 |
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[9cb6916] | 124 | <sect4><title>libc, libc_nonshared</title>
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[2c094d6] | 125 | <para>These files constitute the main C library. The C library is a
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[bdc08c1] | 126 | collection of commonly used functions in programs.
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[58484755] | 127 | This way a programmer doesn't need to create his own functions for every
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[7d90bd3] | 128 | single task. The most common things like writing a string to the screen
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[b822811] | 129 | are already present and at the disposal of the programmer.</para>
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[6370fa6] | 130 |
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[cf24ff1] | 131 | <para>The C library (actually almost every library) comes in two flavors:
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| 132 | a dynamic and a static one. In short, when a program uses a static C
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| 133 | library, the code from the C library is copied into the executable file.
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| 134 | When a program uses a dynamic library, the executable will not
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[2c094d6] | 135 | contain the code from the C library, but instead a routine that loads
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[6370fa6] | 136 | the functions from the library at the time the program is run. This
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[bdc08c1] | 137 | means a significant decrease in the file size of a program. The
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[cf24ff1] | 138 | documentation that comes with the C library describes this in more
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[bdc08c1] | 139 | detail, as it is too complicated to explain here in one or two
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| 140 | lines.</para></sect4>
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| 141 |
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[9cb6916] | 142 | <sect4><title>libcrypt</title>
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[bdc08c1] | 143 | <para>libcrypt is the cryptography library.</para></sect4>
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| 144 |
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[9cb6916] | 145 | <sect4><title>libdl</title>
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[02ef5b58] | 146 | <para>libdl is the dynamic linking interface library.</para></sect4>
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[bdc08c1] | 147 |
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[c5ba0d6] | 148 | <sect4><title>libg</title>
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[02ef5b58] | 149 | <para>libg is a runtime library for g++.</para></sect4>
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[bdc08c1] | 150 |
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[c5ba0d6] | 151 | <sect4><title>libieee</title>
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[02ef5b58] | 152 | <para>libieee is the IEEE floating point library.</para></sect4>
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[bdc08c1] | 153 |
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[9cb6916] | 154 | <sect4><title>libm</title>
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[bdc08c1] | 155 | <para>libm is the mathematical library.</para></sect4>
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| 156 |
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[c5ba0d6] | 157 | <sect4><title>libmcheck</title>
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[65396f5] | 158 | <para>libmcheck contains code run at boot.</para></sect4>
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[bdc08c1] | 159 |
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[c5ba0d6] | 160 | <sect4><title>libmemusage</title>
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[65396f5] | 161 | <para>libmemusage is used by memusage to help collect information about the
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| 162 | memory usage of a program.</para></sect4>
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[bdc08c1] | 163 |
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[9cb6916] | 164 | <sect4><title>libnsl</title>
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[f49cf1a] | 165 | <para>libnsl is the network services library.</para></sect4>
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[bdc08c1] | 166 |
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[c5ba0d6] | 167 | <sect4><title>libnss_compat, libnss_dns, libnss_files,
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| 168 | libnss_hesiod, libnss_nis, libnss_nisplus</title>
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[f49cf1a] | 169 | <para>The basic idea is to put the implementation of the different services
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| 170 | offered to access the databases in separate modules. This has some
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| 171 | advantages:</para>
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| 172 | <itemizedlist>
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[4ceb3a1] | 173 | <listitem><para>contributors can add new services without adding them to
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| 174 | GNU C library,</para></listitem>
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| 175 | <listitem><para>the modules can be updated separately,</para></listitem>
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| 176 | <listitem><para>the C library image is smaller.</para></listitem>
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[f49cf1a] | 177 | </itemizedlist></sect4>
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[bdc08c1] | 178 |
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[c5ba0d6] | 179 | <sect4><title>libpcprofile</title>
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[46105cf] | 180 | <para>Code used by the kernel to track CPU time spent in functions, source
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| 181 | code lines, and instructions.</para></sect4>
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[bdc08c1] | 182 |
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[9cb6916] | 183 | <sect4><title>libpthread</title>
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[f49cf1a] | 184 | <para>The POSIX threads library.</para></sect4>
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[bdc08c1] | 185 |
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[9cb6916] | 186 | <sect4><title>libresolv</title>
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[f49cf1a] | 187 | <para>Functions in this library provide for creating, sending, and
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| 188 | interpreting packets to the Internet domain name servers.</para></sect4>
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[bdc08c1] | 189 |
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[9cb6916] | 190 | <sect4><title>librpcsvc</title>
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[f49cf1a] | 191 | <para>Functions in this library provide miscellaneous RPC services.</para></sect4>
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[bdc08c1] | 192 |
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[9cb6916] | 193 | <sect4><title>librt</title>
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[f49cf1a] | 194 | <para>Functions in this library provide most of the interfaces specified by
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| 195 | the POSIX.1b Realtime Extension.</para></sect4>
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[bdc08c1] | 196 |
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[c5ba0d6] | 197 | <sect4><title>libthread_db</title>
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[f49cf1a] | 198 | <para>Functions is this library are useful for building debuggers for
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| 199 | multi-threaded programs.</para></sect4>
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[bdc08c1] | 200 |
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[9cb6916] | 201 | <sect4><title>libutil</title>
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[32cee45c] | 202 | <para>Contains code for "standard" functions used in many different Unix
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[f49cf1a] | 203 | utilities.</para></sect4>
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[bdc08c1] | 204 |
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| 205 | </sect3>
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[6370fa6] | 206 |
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| 207 | </sect2>
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| 208 |
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