The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
strneqvcmp – compare two strings with an equivalence mapping Synopsis #include <your-opts.h> cc[…] – o outfile infile.c – lopts[…] int strneqvcmp(char const *str1, char const *str2, int ct); Description Using a character mapping, two strings are compared for "equivalence". Each input character is mapped to a comparison character and the mapped-to characters are compared for…
strdup, strndup, strdupa, strndupa – duplicate a string Synopsis #include <string.h> char *strdup(const char *s); char *strndup(const char *s, size_t n); char *strdupa(const char *s); char *strndupa(const char *s, size_t n); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): strdup(): _XOPEN_SOURCE >= 500 || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE strndup(): Since glibc 2.10: _POSIX_C_SOURCE >= 200809L Before glibc 2.10:…
strdup, strndup, strdupa, strndupa – duplicate a string Synopsis #include <string.h> char *strdup(const char *s); char *strndup(const char *s, size_t n); char *strdupa(const char *s); char *strndupa(const char *s, size_t n); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): strdup(): _XOPEN_SOURCE >= 500 || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE strndup(): Since glibc 2.10: _POSIX_C_SOURCE >= 200809L Before glibc 2.10:…
strcpy, strncpy – copy a string Synopsis #include <string.h> char *strcpy(char *dest, const char *src); char *strncpy(char *dest, const char *src, size_t n); Description The strcpy() function copies the string pointed to by src, including the terminating null byte (‘\0’), to the buffer pointed to by dest. The strings may not overlap, and the destination…
strcmp, strncmp – compare two strings Synopsis #include <string.h> int strcmp(const char *s1, const char *s2); int strncmp(const char *s1, const char *s2, size_t n); Description The strcmp() function compares the two strings s1 and s2. The locale is not taken into account (for a locale-aware comparison, see strcoll(3)). The comparison is done using unsigned…
strcat, strncat – concatenate two strings Synopsis #include <string.h> char *strcat(char *dest, const char *src); char *strncat(char *dest, const char *src, size_t n); Description The strcat() function appends the src string to the dest string, overwriting the terminating null byte (‘\0’) at the end of dest, and then adds a terminating null byte. The strings…
strcasecmp, strncasecmp – compare two strings ignoring case Synopsis #include <strings.h> int strcasecmp(const char *s1, const char *s2); int strncasecmp(const char *s1, const char *s2, size_t n); Description The strcasecmp() function performs a byte-by-byte comparison of the strings s1 and s2, ignoring the case of the characters. It returns an integer less than, equal to,…
strmv.f – Synopsis Functions/Subroutines subroutine strmv (UPLO, TRANS, DIAG, N, A, LDA, X, INCX) STRMV Function/Subroutine Documentation subroutine strmv (characterUPLO, characterTRANS, characterDIAG, integerN, real, dimension(lda,*)A, integerLDA, real, dimension(*)X, integerINCX) STRMV Purpose: STRMV performs one of the matrix-vector operations x := A*x, or x := A**T*x, where x is an n element vector and A is…
strmv.f – Synopsis Functions/Subroutines subroutine strmv (UPLO, TRANS, DIAG, N, A, LDA, X, INCX) STRMV Function/Subroutine Documentation subroutine strmv (characterUPLO, characterTRANS, characterDIAG, integerN, real, dimension(lda,*)A, integerLDA, real, dimension(*)X, integerINCX) STRMV Purpose: STRMV performs one of the matrix-vector operations x := A*x, or x := A**T*x, where x is an n element vector and A is…
strmode – convert inode status information into a symbolic string Library Lb libbsd Synopsis In bsd/string.h Ft void Fn strmode mode_t mode char *bp Description The Fn strmode function converts a file Fa mode (the type and permission information associated with an inode, see stat(2)) into a symbolic string which is stored in the location…
strmm.f – Synopsis Functions/Subroutines subroutine strmm (SIDE, UPLO, TRANSA, DIAG, M, N, ALPHA, A, LDA, B, LDB) STRMM Function/Subroutine Documentation subroutine strmm (characterSIDE, characterUPLO, characterTRANSA, characterDIAG, integerM, integerN, realALPHA, real, dimension(lda,*)A, integerLDA, real, dimension(ldb,*)B, integerLDB) STRMM Purpose: STRMM performs one of the matrix-matrix operations B := alpha*op( A )*B, or B := alpha*B*op( A ),…
strmm.f – Synopsis Functions/Subroutines subroutine strmm (SIDE, UPLO, TRANSA, DIAG, M, N, ALPHA, A, LDA, B, LDB) STRMM Function/Subroutine Documentation subroutine strmm (characterSIDE, characterUPLO, characterTRANSA, characterDIAG, integerM, integerN, realALPHA, real, dimension(lda,*)A, integerLDA, real, dimension(ldb,*)B, integerLDB) STRMM Purpose: STRMM performs one of the matrix-matrix operations B := alpha*op( A )*B, or B := alpha*B*op( A ),…
strlen – calculate the length of a string Synopsis #include <string.h> size_t strlen(const char *s); Description The strlen() function calculates the length of the string pointed to by s, excluding the terminating null byte (‘\0’). Return Value The strlen() function returns the number of bytes in the string pointed to by s. Attributes For an…
strlcpy strlcat – size-bounded string copying and concatenation Library Lb libbsd Synopsis In bsd/string.h Ft size_t Fn strlcpy char *dst const char *src size_t size Ft size_t Fn strlcat char *dst const char *src size_t size Description The Fn strlcpy and Fn strlcat functions copy and concatenate strings respectively. They are designed to be safer,…
strlcpy strlcat – size-bounded string copying and concatenation Library Lb libbsd Synopsis In bsd/string.h Ft size_t Fn strlcpy char *dst const char *src size_t size Ft size_t Fn strlcat char *dst const char *src size_t size Description The Fn strlcpy and Fn strlcat functions copy and concatenate strings respectively. They are designed to be safer,…
stringprep_utf8_to_unichar – API function Synopsis #include <stringprep.h> uint32_t stringprep_utf8_to_unichar(const char * p); Arguments const char * p a pointer to Unicode character encoded as UTF-8 Description Converts a sequence of bytes encoded as UTF-8 to a Unicode character. If p does not point to a valid UTF-8 encoded character, results are undefined. Return Value the…
stringprep_utf8_to_ucs4 – API function Synopsis #include <stringprep.h> uint32_t * stringprep_utf8_to_ucs4(const char * str, ssize_t len, size_t * items_written); Arguments const char * str a UTF-8 encoded string ssize_t len the maximum length of str to use. If len < 0, then the string is nul-terminated. size_t * items_written location to store the number of characters…
stringprep_utf8_to_locale – API function Synopsis #include <stringprep.h> char *stringprep_utf8_to_locale(const char *str); Arguments const char * str input zero terminated string. Description Convert string encoded in UTF-8 into the locale’s character set by using stringprep_convert(). Return Value Returns newly allocated zero-terminated string which is str transcoded into the locale’s character set. Reporting Bugs Report bugs to…
stringprep_utf8_nfkc_normalize – API function Synopsis #include <stringprep.h> char *stringprep_utf8_nfkc_normalize(const char *str, ssize_t len); Arguments const char * str a UTF-8 encoded string. ssize_t len length of str, in bytes, or -1 if str is nul-terminated. Description Converts a string into canonical form, standardizing such issues as whether a character with an accent is represented as…
stringprep_unichar_to_utf8 – API function Synopsis #include <stringprep.h> int stringprep_unichar_to_utf8(uint32_t c, char *outbuf); Arguments uint32_t c a ISO10646 character code char * outbuf output buffer, must have at least 6 bytes of space. If NULL, the length will be computed and returned and nothing will be written to outbuf. Description Converts a single character to UTF-8….