NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | COLOPHON

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

NAME         top

       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         top

       #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         top

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

SEE ALSO         top

       index(3), rindex(3), stpcpy(3), strcasecmp(3), strcat(3), strchr(3),
       strcmp(3), strcoll(3), strcpy(3), strcspn(3), strdup(3), strfry(3),
       strlen(3), strncasecmp(3), strncat(3), strncmp(3), strncpy(3),
       strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3),
       strxfrm(3)

COLOPHON         top

       This page is part of release 4.08 of the Linux man-pages project.  A
       description of the project, information about reporting bugs, and the
       latest version of this page, can be found at
       https://www.kernel.org/doc/man-pages/.

                                 2014-01-04                        STRING(3)