string(3) - Linux manual page (original) (raw)

string(3) Library Functions Manual string(3)

NAME top

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

LIBRARY top

   Standard C library (_libc_, _-lc_)

SYNOPSIS top

   **#include <strings.h>**

   [strcasecmp(3)](../man3/strcasecmp.3.html)
          Compare two strings, ignoring case.

   [strncasecmp(3)](../man3/strncasecmp.3.html)
          Compare the first bytes of two strings, ignoring case.

   [index(3)](../man3/index.3.html)
          Identical to [strchr(3)](../man3/strchr.3.html).

   [rindex(3)](../man3/rindex.3.html)
          Identical to [strrchr(3)](../man3/strrchr.3.html).

   **#include <string.h>**

   [stpcpy(3)](../man3/stpcpy.3.html)
          Copy a string, returning a pointer to the end of the
          resulting string.

   [strcat(3)](../man3/strcat.3.html)
          Append a string into an existing string.

   [strchr(3)](../man3/strchr.3.html)
          Find the first occurrence of a character in a string.

   [strcmp(3)](../man3/strcmp.3.html)
          Compare two strings.

   [strcoll(3)](../man3/strcoll.3.html)
          Compare two strings, using the current locale.

   [strcpy(3)](../man3/strcpy.3.html)
          Copy a string.

   [strcspn(3)](../man3/strcspn.3.html)
          Calculate the length of the initial segment of a string
          which does not contain any of the rejected bytes.

   [strdup(3)](../man3/strdup.3.html)
          Duplicate a string in memory allocated using [malloc(3)](../man3/malloc.3.html).

   [strfry(3)](../man3/strfry.3.html)
          Randomly swap the characters in a string.

   [strlen(3)](../man3/strlen.3.html)
          Return the length of a string.

   [strncat(3)](../man3/strncat.3.html)
          Append non-null bytes from an array to a string, and null-
          terminate the result.

   [strncmp(3)](../man3/strncmp.3.html)
          Compare the first bytes of two strings.

   [strpbrk(3)](../man3/strpbrk.3.html)
          Find the first occurrence in a string of one of the bytes
          in the accepted bytes.

   [strrchr(3)](../man3/strrchr.3.html)
          Find the last occurrence of a character in a string.

   [strsep(3)](../man3/strsep.3.html)
          Extract the initial field in a string that is delimited by
          one of the delimiter bytes.

   [strspn(3)](../man3/strspn.3.html)
          Calculate the length of the initial segment of a string
          that consists entirely of accepted bytes.

   [strstr(3)](../man3/strstr.3.html)
          Find the first occurrence of a substring in a string.

   [strtok(3)](../man3/strtok.3.html)
          Extract tokens from a string that are delimited by one of
          the delimiter bytes.

   [strxfrm(3)](../man3/strxfrm.3.html)
          Transforms a string to the current locale and copies the
          first bytes to a buffer.

   [strncpy(3)](../man3/strncpy.3.html)
          Fill a fixed-size buffer with leading non-null bytes from a
          source array, padding with null bytes as needed.

DESCRIPTION top

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

SEE ALSO top

   [bstring(3)](../man3/bstring.3.html), [stpcpy(3)](../man3/stpcpy.3.html), [strcasecmp(3)](../man3/strcasecmp.3.html), [strcat(3)](../man3/strcat.3.html), [strchr(3)](../man3/strchr.3.html),
   [strcmp(3)](../man3/strcmp.3.html), [strcoll(3)](../man3/strcoll.3.html), [strcpy(3)](../man3/strcpy.3.html), [strcspn(3)](../man3/strcspn.3.html), [strdup(3)](../man3/strdup.3.html),
   [strfry(3)](../man3/strfry.3.html), [strlen(3)](../man3/strlen.3.html), [strncasecmp(3)](../man3/strncasecmp.3.html), [strncat(3)](../man3/strncat.3.html), [strncmp(3)](../man3/strncmp.3.html),
   [strncpy(3)](../man3/strncpy.3.html), [strpbrk(3)](../man3/strpbrk.3.html), [strrchr(3)](../man3/strrchr.3.html), [strsep(3)](../man3/strsep.3.html), [strspn(3)](../man3/strspn.3.html),
   [strstr(3)](../man3/strstr.3.html), [strtok(3)](../man3/strtok.3.html), [strxfrm(3)](../man3/strxfrm.3.html)

COLOPHON top

   This page is part of the _man-pages_ (Linux kernel and C library
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   part of the original manual page), send a mail to
   man-pages@man7.org

Linux man-pages 6.10 2024-12-22 string(3)

Pages that refer to this page:bstring(3), strcasecmp(3), strchr(3), strcmp(3), strcoll(3), strcpy(3), strdup(3), strfry(3), strlen(3), strncat(3), strpbrk(3), strsep(3), strspn(3), strstr(3), strtok(3), strxfrm(3), string_copying(7)