I have list of users in a file, they must delete from servers.
or is there any way to write an script to delete all the child entries if we delete their parent entry only?
Its urgent, please help.
Regards,
Chand
Moderator's Comments:
Please use CODE tags (not QUOTE tags) to surround all sample input, sample output, and code segments.
The CODE tags need to surround tagged data like this: [CODE]data[/CODE] which produces:
Code:
data
Not before the data like [CODE][/CODE]data.
Last edited by Don Cragun; 11-21-2015 at 11:17 PM..
Reason: Add COE tags, remove ineffective QUOTE tags.
When shutting down a freshly installed version of 5.7 on a Compaq server I get two messages:
INIT: failed to write of utmpx entry: "s0"
and:
INIT: failed to write of utmpx entry: "fw"
then I can continue with the shutdown. When I bring the system back up it has not saved any of my... (2 Replies)
I had a drive go bad. I have replaced the drive and have my system up. I have a 1-to-1 mirror raid. My mirrored boot drive brings the system up. I issued a reboot command. The system comes up gives me a login prompt and generates the error: failed write of utmpx entry:"i2".
What is i2? (1 Reply)
Hi i try to use the function putpwent to write a simple
entry in "/etc/passwd" putpwnet returns 0 as it works but
notething writes to /etc/passwd. What have i missed?
My os
--------
root@nighter-laptop:/home/nighter/labb# uname -a
Linux nighter-laptop 2.6.22-14-generic #1 SMP Sun Oct 14... (5 Replies)
Can anyone provide me a shell script to edit a xml file and delete one entry.
To do manually i can edit(vi editor) the file and 'dd' will delete the file.But I wiluld to know if I can do with a script.
Thanks in advance
Tannu (6 Replies)
Hi All,
I want to detect each new file coming / getting created in unix directory.
When every new file came to directory, i have to get its details like its size , date and time stamp and store it into another file.
Could any one please tell me , how i can achieve that?
Thanks. (13 Replies)
hi ,
I have 4 tables
1.table 1
2.table 2 ==> delete from here
3.table 3
4.table 4
table 2 & table 3 has pk_fk relationship
table 1 & table 4 ha spk_fk relationship
basically i wanted to do physical delete few rows from table 2 (Parent),
it should delete from... (0 Replies)
Hi Ladies and Gents,
Explanation of my question with an example:
Let's consider the script: backup_every_hour.sh
#!/bin/bash
rsync -auv $dir $backup_dir >> backup_every_hour_script.log
Each time this script is called there will be a new entry at the end of the file... (1 Reply)
Dear Experts.
I need to add/modify the entries in the DNS server and this has to be achieved using shell script and below is the requirement, could you please let me know if a shell script can be written for this task?
1. Log in to primary DNS server
2. Check /etc/named.conf if zone is... (4 Replies)
Hi
I have a root script which is setting up user and his dirs and so on. After I create user and set up all the necessary I have to manually set user password. I try all possible ways what google find me and nothing works for me. If maybe one of you have a solution for my problem it will be... (1 Reply)
I have the input file like this.
Input file: 12.txt
1) There are one or more than one <tr> tags in same line.
2) Some tr tags may have one <td> or more tna one <td> tags within it.
3) Few <td> tags having "<td> </td>". Few having more than one " " entry in it.
<tr> some td... (4 Replies)
Discussion started by: thomasraj87
4 Replies
LEARN ABOUT NETBSD
fork
FORK(2) BSD System Calls Manual FORK(2)NAME
fork -- create a new process
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h>
pid_t
fork(void);
DESCRIPTION
fork() causes creation of a new process. The new process (child process) is an exact copy of the calling process (parent process) except for
the following:
o The child process has a unique process ID.
o The child process has a different parent process ID (i.e., the process ID of the parent process).
o The child process has its own copy of the parent's descriptors. These descriptors reference the same underlying objects, so that,
for instance, file pointers in file objects are shared between the child and the parent, so that an lseek(2) on a descriptor in the
child process can affect a subsequent read(2) or write(2) by the parent. This descriptor copying is also used by the shell to
establish standard input and output for newly created processes as well as to set up pipes.
o The child process' resource utilizations are set to 0; see setrlimit(2).
In general, the child process should call _exit(2) rather than exit(3). Otherwise, any stdio buffers that exist both in the parent and child
will be flushed twice. Similarly, _exit(2) should be used to prevent atexit(3) routines from being called twice (once in the parent and once
in the child).
In case of a threaded program, only the thread calling fork() is still running in the child processes.
Child processes of a threaded program have additional restrictions, a child must only call functions that are async-signal-safe. Very few
functions are asynchronously safe and applications should make sure they call exec(3) as soon as possible.
RETURN VALUES
Upon successful completion, fork() returns a value of 0 to the child process and returns the process ID of the child process to the parent
process. Otherwise, a value of -1 is returned to the parent process, no child process is created, and the global variable errno is set to
indicate the error.
ERRORS
fork() will fail and no child process will be created if:
[EAGAIN] The system-imposed limit on the total number of processes under execution would be exceeded. This limit is configuration-depen-
dent.
[EAGAIN] The limit RLIMIT_NPROC on the total number of processes under execution by this user id would be exceeded.
[ENOMEM] There is insufficient swap space for the new process.
SEE ALSO execve(2), setrlimit(2), vfork(2), wait(2), pthread_atfork(3)STANDARDS
The fork() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1'').
HISTORY
A fork() system call appeared in Version 6 AT&T UNIX.
BSD June 10, 2004 BSD