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STRING(3) Linux Programmer's Manual STRING(3)

NAME

     stpcpy,  strcasecmp,  strcat, strchr, strcmp, strcoll, strcpy, strcspn,
     strdup, strfry, strlen, strncat, strncmp, strncpy,  strncasecmp,  strp-
     brk,  strrchr, strsep, strspn, strstr, strtok, strxfrm, index, rindex -
     string operations

SYNOPSIS

     #include <strings.h>

     int strcasecmp(const char *s1, const char *s2);
            Compare the strings s1 and s2 ignoring case.

     int strncasecmp(const char *s1, const char *s2, size_t n);
            Compare the first n characters of the strings s1 and s2 ignoring
            case.

     char *index(const char *s, int c);
            Return  a  pointer to the first occurrence of the character c in
            the string s.

     char *rindex(const char *s, int c);
            Return a pointer to the last occurrence of the  character  c  in
            the string s.

     #include <string.h>

     char *stpcpy(char *dest, const char *src);
            Copy  a  string from src to dest, returning a pointer to the end
            of the resulting string at dest.

     char *strcat(char *dest, const char *src);
            Append the string src to the string dest,  returning  a  pointer
            dest.

     char *strchr(const char *s, int c);
            Return  a  pointer to the first occurrence of the character c in
            the string s.

     int strcmp(const char *s1, const char *s2);
            Compare the strings s1 with s2.

     int strcoll(const char *s1, const char *s2);
            Compare the strings s1 with s2 using the current locale.

     char *strcpy(char *dest, const char *src);
            Copy the string src to dest, returning a pointer to the start of
            dest.

     size_t strcspn(const char *s, const char *reject);
            Calculate  the  length  of  the  initial segment of the string s
            which does not contain any of bytes in the string reject,

     char *strdup(const char *s);
            Return a duplicate of the string s  in  memory  allocated  using
            malloc(3).

     char *strfry(char *string);
            Randomly swap the characters in string.

     size_t strlen(const char *s);
            Return the length of the string s.

     char *strncat(char *dest, const char *src, size_t n);
            Append  at  most  n characters from the string src to the string
            dest, returning a pointer to dest.

     int strncmp(const char *s1, const char *s2, size_t n);
            Compare at most n bytes of the strings s1 and s2.

     char *strncpy(char *dest, const char *src, size_t n);
            Copy at most n bytes  from  string  src  to  dest,  returning  a
            pointer to the start of dest.

     char *strpbrk(const char *s, const char *accept);
            Return  a pointer to the first occurrence in the string s of one
            of the bytes in the string accept.

     char *strrchr(const char *s, int c);
            Return a pointer to the last occurrence of the  character  c  in
            the string s.

     char *strsep(char **stringp, const char *delim);
            Extract the initial token in stringp that is delimited by one of
            the bytes in delim.

     size_t strspn(const char *s, const char *accept);
            Calculate the length of the starting segment  in  the  string  s
            that consists entirely of bytes in accept.

     char *strstr(const char *haystack, const char *needle);
            Find  the first occurrence of the substring needle in the string
            haystack, returning a pointer to the found substring.

     char *strtok(char *s, const char *delim);
            Extract tokens from the string s that are delimited  by  one  of
            the bytes in delim.

     size_t strxfrm(char *dest, const char *src, size_t n);
            Transforms  src  to  the  current  locale and copies the first n
            characters to dest.

DESCRIPTION

     The string functions perform  operations  on  null-terminated  strings.
     See the individual man pages for descriptions of each function.