SPAWNL(3)

💖 SPAWNL(3) 💖

okay bestie, this page is from Schily´s LIBRARY FUNCTIONS and it's all about launching a command in a subsidiary process. group-chat summary: spawnl() is the “run this with these args, then come back to me” girlie. 🫶

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🌸 NAME 🌸

spawnl() — calls a command with specified arguments ✨

🦋 SYNOPSIS 🦋

int spawnl(Sin,Sout,Serr,Command_Name,arg1...argn,NULL)
     FILE *Sin, *Sout, *Serr;
     char *Command_Name, *arg1...*argn;

🔥 DESCRIPTION 🔥

okay so spawnl() causes the named command to be called in a subsidiary process with the given arguments. The last argument to spawnl() must be NULL to indicate the end of the list — that's the “ok we're done with args” flag, periodt.

The streams Sin, Sout and Serr become stdin, stout, and stderr for the command. (Yes bestie, stout — that is literally what the page says, and I am not fixing the canon. 🍓) The Command_Name may be an absolute or a relative pathname.

To locate the command, the working directory is searched first, then /bin. This is a property of fexecv(), which spawnl() calls. 👑

When the command finishes, spawnl() returns to the caller. no cap.

💅 RETURNS 💅

Returns 0 when successful. Otherwise, returns a non-zero value which could be:

• an error code from fork() or fexecl(). the argument to exit() in the Command_name.
• 1, if stopped by a control C (^C).
• 2, if killed by another process.
• 4, if suspended by any fault, raise, control Y ^Y or by another process. (In this case, spawnl() kills the suspended process.)

🎀 NOTES 🎀

spawnl() just calls spawnv() with the address and length of the argument list. 💅

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mwah 💋 — signing off with Joerg Schilling, 2022/09/09, SPAWNL(3), from Schily´s LIBRARY FUNCTIONS. periodt. 🌈