Guys, I have the following code
Why I don't see any outputs on the screen when I run my program ?
usying any .txt file I should get on stdout ( screen ) the number of lines that "stringa" shows up. But I don't.
What am I doing wrong ? A friend of mine tryied in his computer and it worked. Why it doesn't work in mine ?
Just a super quick question:
how do you put a link in your php code.
I want to make a link to something in /tmp directory.
i.e. how do you put a href into php, I think it's done a bit differently.
thanks
john (1 Reply)
hi guys
trying to understand what this line means
sed is a stream editor and i understand that, i have a file already selected
i want to edit so i use -e
sed -e
the next stesp is s/$*
s is a subsititute replacement
sed -e s/$*//g
$ is in reference of the last line
/g makes it... (2 Replies)
Hi guys
sed -e "s/$<//g"
the $< can allow me to assign an input value to the variable right?
do the double quotes check the previous context? (1 Reply)
Just a quick question on grep/egrep.
I am writing a shell script that is looking for certain strings in a text file. It works well and gets exactly what I need.
However, the way the program writes to the text file, it puts the timestamp in a line above the string I am looking for and the path... (3 Replies)
Hi,
I'm very new to Linux but have been muddling my way through quite happily until recently.
I'm trying to write a program in C++ which starts a new process using the execl command. I am trying to run the tftp process as follows:
char ip_addr = "...";
if (execl("usr/bin/tftp", "tftp",... (2 Replies)
Hello Experts,
Here is my problem..
cat abc.txt
1,"nathan available"
2,"MW nathan available"
3,"HW nathan available"
How can i grep for "nathan available" alone.
I tried grep -w "nathan available"
Problem is that the pattern is enclosed in Quotes " ".
I know we can do grep... (2 Replies)
I'm reading Operating Systems in Depth by Thomas W. Doeppner, and I have a question about execl. He says it's called after fork(), and that it replaces the text (code) of the current process and replaces it with the code of the new program. But that doesn't make sense to me.
Does that mean... (4 Replies)
Discussion started by: SirSalt
4 Replies
LEARN ABOUT DEBIAN
ns_execargblk
Ns_Exec(3aolserver) AOLserver Library Procedures Ns_Exec(3aolserver)__________________________________________________________________________________________________________________________________________________NAME
Ns_ExecArgblk, Ns_ExecArgv, Ns_ExecProc, Ns_ExecProcess, Ns_Fork, Ns_GetEnviron, Ns_WaitForProcess, Ns_WaitProcess, ns_fork - External
process execution
SYNOPSIS
#include "ns.h"
int
Ns_ExecArgblk(char *exec, char *dir, int fdin, int fdout,
char *args, Ns_Set *env)
int
Ns_ExecArgv(char *exec, char *dir, int fdin, int fdout,
char **argv, Ns_Set *env)
int
Ns_ExecProc(char *exec, char **argv)
int
Ns_ExecProcess(char *exec, char *dir, int fdin, int fdout,
char *args, Ns_Set *env)
int
Ns_Fork(void)
char
**Ns_GetEnviron(void)
int
Ns_WaitForProcess(int pid, int *statusPtr)
int
Ns_WaitProcess(int pid)
int
ns_fork(void)
_________________________________________________________________DESCRIPTION
These functions handle fork and exec operations. See files: nsd/exec.c, nsd/tclenv.c and nsthread/fork.c.
Ns_ExecArgblk(exec, dir, fdin, fdout, args, env)
Executes a command in a child process. Return process id of child process exec'ing the command or -1 on failure. Provides extended
error checking and error messages.
Ns_ExecArgv(exec, dir, fdin, fdout, argv, env)
Execute a command in a child process using fork(2) and execve(2), returns the process id of child process exec'ing the command or -1
on failure. The child sends an extended error message to the parent.
Ns_ExecProc(exec, argv)
Executes a command in a child process. Returns the process id of the child process exec'ing the command or -1 on failure. Simpli-
fies call to Ns_ExecArgv.
Ns_ExecProcess(exec, dir, fdin, fdout, args, env)
Executes a command in a child process. Returns the process id of the child process exec'ing the command or -1 on failure. Calls
Ns_ExecArgblk with same arguments.
Ns_Fork()
Posix style fork(), using fork1() on Solaris if needed. See fork(2) man page. Calls ns_fork.
Ns_GetEnviron()
Returns pointer to the environment vector.
Ns_WaitForProcess(pid, statusPtr)
Wait for child process. Returns NS_OK on success, or NS_ERROR on failure. *statusPtr is set to the exit code of the child process.
Ns_WaitProcess(pid)
Wait for child process. Calls Ns_WaitForProcess with NULL statusPtr. Returns NS_OK on success, or NS_ERROR on failure.
ns_fork()
Posix style fork(), using fork1() on Solaris if needed.
SEE ALSO nsd(1), info(n)
KEYWORDS AOLserver 4.0 Ns_Exec(3aolserver)