strnstr(9)

okay so bestie, welcome to the strnstr(9) kernel API manual page — yes we're doing kernel string lore today, and it's lowkey iconic. Let's get into it. 💅

✨ NAME ✨

strnstr — Find the first substring in a length-limited string. That's the whole vibe: you have a string, you have a length limit, and you're hunting for the first substring inside it. 🔍

🦋 SYNOPSIS 🦋

char * strnstr (const char *s1 , const char *s2 , size_t len );

🎀 ARGUMENTS 🎀

• s1 — The string to be searched. This is the main character you're digging through. 👑
• s2 — The string to search for. The little substring you're trying to find in there. 🍓
• len — the maximum number of characters to search. Basically the search boundary, bestie; don't go past it. ✨

🌈 SEE ALSO 🌈

Kernel file ./lib/string.c plus this whole squad of related functions:

• strncasecmp(9)
• stpcpy(9)
• strcmp(9)
• strncmp(9)
• strchr(9)
• strchrnul(9)
• strnchrnul(9)
• strrchr(9)
• strnchr(9)
• strspn(9)
• strcspn(9)
• strpbrk(9)
• strsep(9)
• memset(9)
• memset16(9)
• memset32(9)
• memset64(9)
• memcpy(9)
• memmove(9)
• memcmp(9)
• bcmp(9)
• memscan(9)
• strstr(9)
• memchr(9)
• memchr_inv(9)

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and that's the strnstr(9) page, bestie — source ./lib, dated October 2026. periodt. 💖✨