11-03-2005
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi Folks,
Could you please suggest me how to run a shell script on a solaris env without using crontab. I am actually trying to write a shell script which will grep "WORD" in the logfile andd sends a email.Thanks in advance.
Thanks
Sandeep. (3 Replies)
Discussion started by: sandeep anand
3 Replies
2. Shell Programming and Scripting
hi,,
i hav a file with many lines.i need to remove all lines before a line begginning with a specific pattern from the file because these lines are not required.
Can u help me out with either a perl script or shell script
example:-
if file initially contains lines:
a
b
c
d
.1.2
d
e
f... (2 Replies)
Discussion started by: raksha.s
2 Replies
3. Shell Programming and Scripting
Hi,
Can some one tell me if we can configure the jobs in crontab using a shell script.
I know it can be done easily by using "crontab -e", but i just want to know whether we can add a job into the crontab using a shell script.
If it can be done, plz suggest the procedure to do it.
If it... (6 Replies)
Discussion started by: rudrarajumk
6 Replies
4. Shell Programming and Scripting
Hi,
could someone help me on this i want to remove line from /etc/vfstab in the system how to do that
it is rite now like this
/dev/vx/dsk/appdg1/mytestvol /dev/vx/rdsk/appdg1/mytestvol /mytest vxfs 3 no largefiles
/dev/vx/dsk/appdg1/mytestvol1 ... (2 Replies)
Discussion started by: tarunn.dubeyy
2 Replies
5. Shell Programming and Scripting
Hi,
I am pasring a file line by line. I need to check each field in line and remove particular line.
input file lines are,
02;ABC;PQR
03;aaa;rrr
04;ABC;ggg
09;eee;ABC
04;lmn;stu
I am looking for line containing "ABC" as field value. Now How can I remove this line from input file... (7 Replies)
Discussion started by: Poonamol
7 Replies
6. Shell Programming and Scripting
Hi
$ cat ad.sh
ldapsearorg -x -LLL -h sb1131z.testbadbigcorp.org -D "CN=ADMINZZ,OU=AdminRoles,DC=testbadbigcorp,DC=org" -w "UT3w4f57lll--4...4" -b "OU=Test,DC=testbadbigcorp,DC=org" "(&(&(&(&(objectCategory=person)(objectClass=user)(lockoutTime:1.2.840.113556.1.4.804:=4294967295)))))" dn$... (3 Replies)
Discussion started by: slashdotweenie
3 Replies
7. Shell Programming and Scripting
hi,
i have shell script which checks for service running on platform,
if service is receiving calls, then do nothing
if service is not receiving calls, then stop the service
i want to run this script in 2 timeslots.
i.e. in the day from 9 am to 5 pm it should run every 10 minutes
and ... (2 Replies)
Discussion started by: gauravah
2 Replies
8. Shell Programming and Scripting
Hi All,
I've a csv file in which the record is getting break into 1 line or more than one line. I want to combine those splits into one line and remove the unwanted character existing in the record i.e. double quote symbol ("). The line gets break only when the record contains double... (4 Replies)
Discussion started by: rajak.net
4 Replies
9. Shell Programming and Scripting
I have below file. I want to remove space at begining of every line and then after also remove blank line from file.
I use below code for each operation.
sed -e 's/^*//' < check.txt > check1.txt
sed '/^\s*$/d' < check1.txt > check2.txt
above code not remove all the space... (12 Replies)
Discussion started by: Mohin Jain
12 Replies
10. Shell Programming and Scripting
my problem is this: when I run a script from the command line it works but returns a failure if I run it from crontab.
Basically I wanted to send a file to hdfs,
I thought it was related to the fact that crontab do not know the path to hdfs so I put the full path but it still does not work: here... (16 Replies)
Discussion started by: beautymind
16 Replies
LEARN ABOUT FREEBSD
sem_close
SEM_OPEN(3) BSD Library Functions Manual SEM_OPEN(3)
NAME
sem_open, sem_close, sem_unlink -- named semaphore operations
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <semaphore.h>
sem_t *
sem_open(const char *name, int oflag, ...);
int
sem_close(sem_t *sem);
int
sem_unlink(const char *name);
DESCRIPTION
The sem_open() function creates or opens the named semaphore specified by name. The returned semaphore may be used in subsequent calls to
sem_getvalue(3), sem_wait(3), sem_trywait(3), sem_post(3), and sem_close().
This implementation places strict requirements on the value of name: it must begin with a slash ('/') and contain no other slash characters.
The following bits may be set in the oflag argument:
O_CREAT Create the semaphore if it does not already exist.
The third argument to the call to sem_open() must be of type mode_t and specifies the mode for the semaphore. Only the S_IWUSR,
S_IWGRP, and S_IWOTH bits are examined; it is not possible to grant only ``read'' permission on a semaphore. The mode is modified
according to the process's file creation mask; see umask(2).
The fourth argument must be an unsigned int and specifies the initial value for the semaphore, and must be no greater than
SEM_VALUE_MAX.
O_EXCL Create the semaphore if it does not exist. If the semaphore already exists, sem_open() will fail. This flag is ignored unless
O_CREAT is also specified.
The sem_close() function closes a named semaphore that was opened by a call to sem_open().
The sem_unlink() function removes the semaphore named name. Resources allocated to the semaphore are only deallocated when all processes
that have the semaphore open close it.
RETURN VALUES
If successful, the sem_open() function returns the address of the opened semaphore. If the same name argument is given to multiple calls to
sem_open() by the same process without an intervening call to sem_close(), the same address is returned each time. If the semaphore cannot
be opened, sem_open() returns SEM_FAILED and the global variable errno is set to indicate the error.
The sem_close() and sem_unlink() functions return the value 0 if successful; otherwise the value -1 is returned and the global variable errno
is set to indicate the error.
ERRORS
The sem_open() function will fail if:
[EACCES] The semaphore exists and the permissions specified by oflag at the time it was created deny access to this process.
[EACCES] The semaphore does not exist, but permission to create it is denied.
[EEXIST] O_CREAT and O_EXCL are set but the semaphore already exists.
[EINTR] The call was interrupted by a signal.
[EINVAL] The sem_open() operation is not supported for the given name.
[EINVAL] The value argument is greater than SEM_VALUE_MAX.
[ENAMETOOLONG] The name argument is too long.
[ENFILE] The system limit on semaphores has been reached.
[ENOENT] O_CREAT is not set but the named semaphore does not exist.
[ENOSPC] There is not enough space to create the semaphore.
The sem_close() function will fail if:
[EINVAL] The sem argument is not a valid semaphore.
The sem_unlink() function will fail if:
[EACCES] Permission is denied to unlink the semaphore.
[ENAMETOOLONG] The specified name is too long.
[ENOENT] The named semaphore does not exist.
SEE ALSO
close(2), open(2), umask(2), unlink(2), sem_getvalue(3), sem_post(3), sem_trywait(3), sem_wait(3)
STANDARDS
The sem_open(), sem_close(), and sem_unlink() functions conform to ISO/IEC 9945-1:1996 (``POSIX.1'').
HISTORY
Support for named semaphores first appeared in FreeBSD 5.0.
BSD
January 9, 2010 BSD