10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
The file f1 contains the text "body" (shell prompt is "$"):
$ cat ~/path/f1
body
How to print contents of f1 when the f1 path is in a variable?
Here is my failed attempt:
$ f1="~/path/f1"
$ echo $f1
~/path/f1
$ cat $f1
cat: '~/path/f1': No such file or directory (2 Replies)
Discussion started by: wolfv
2 Replies
2. Linux
Hi
I have a requirement like this:
/abc/a/x.txt
/abc/a/y.txt
/abc/b/x.gz
/abc/b/y.txt
I need output like this:
/abc/a:*.txt
/abc/b:*.txt
/abc/b:*.gz
I have tried find /abc -type f -name "*.*" ||awk -F . '{print $NF}' it is print only extensions without path name.
Please... (5 Replies)
Discussion started by: lijjumathew
5 Replies
3. Shell Programming and Scripting
Hello,
I have to fish out some specific columns from a file based on the header value. I have the list of columns I need in a different file. I thought I could read in the list of headers I need,
# file with header names of required columns in required order
headers_file=$2
# read contents... (11 Replies)
Discussion started by: LMHmedchem
11 Replies
4. Shell Programming and Scripting
Hi All,
Sorrry by basic question but I have many files text plane e.g.
$ls
file1 file2 file3 ..
etc.,
$cat file1
123
244
345
NNN
4234
QQQ
423534
How can read contain each file and find pattern NNN and print in new file output, (2 Replies)
Discussion started by: aav1307
2 Replies
5. Shell Programming and Scripting
Hi,
I have two input files; file1 and file2. I compare them based on matched values in 1 column and print selected columns of the second file (file2). I got the result but the header was not printed. i want the header of file2 to be printed together with the result. Then i did below codes:-
... (3 Replies)
Discussion started by: redse171
3 Replies
6. Shell Programming and Scripting
hi,
i have a directory at /path/unix with the following files
1.txt
2.txt
3.txt
4.txt
I want to make another file called filenames.txt at a different location called /path/home. So, my output file would be
/path/home/filenames.txt with contents
/path/unix/1.txt... (1 Reply)
Discussion started by: jacobs.smith
1 Replies
7. AIX
How to can find all locked files and release the locks in Unix?
We have an issue were an ftp job lands files under /home/loginid at 5:30 pm and at 6 pm we run a get file on the mvs mainframe machine ftp the file from the server to the mainframe. We get an error file is in use eventhu it is not !!... (4 Replies)
Discussion started by: mrn6430
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8. Emergency UNIX and Linux Support
Guys I have a big issue that I need to get fixed ASAP however I can not seem to find a way to do it. We started to use zones with Solaris 10 at work and we moved a zone from a SIT box to a DEV box. Problem is the software we have installed is looking at a /lcl/sit/apps/ path and it needs to look... (5 Replies)
Discussion started by: LRoberts
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9. Shell Programming and Scripting
Hi all
i need your help .. I am having a multiple file in directory and i have find out the Rcopy word from these files and need to print those files which contains the Rcopy word
Thanks and regards
Vijay sahu (2 Replies)
Discussion started by: vijays3
2 Replies
10. Shell Programming and Scripting
I'm trying to clean up my samba share and need to print the found file or print the path of the image it tried to searched for. So far I have this but can't seem to get the logic right. Can anyone help point me in the right direction?
for FILE in `cat list`; do
if ;
then
... (1 Reply)
Discussion started by: overkill
1 Replies
pthread_mutexattr_gettype(3C) Standard C Library Functions pthread_mutexattr_gettype(3C)
NAME
pthread_mutexattr_gettype, pthread_mutexattr_settype - get or set mutex type
SYNOPSIS
cc -mt [ flag... ] file... -lpthread [ library... ]
#include <pthread.h>
int pthread_mutexattr_gettype(pthread_mutexattr_t *restrict attr,
int *restrict type);
int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type);
DESCRIPTION
The pthread_mutexattr_gettype() and pthread_mutexattr_settype() functions respectively get and set the mutex type attribute. This attribute
is set in the type parameter to these functions. The default value of the type attribute is PTHREAD_MUTEX_DEFAULT.
The type of mutex is contained in the type attribute of the mutex attributes. Valid mutex types include:
PTHREAD_MUTEX_NORMAL This type of mutex does not detect deadlock. A thread attempting to relock this mutex without first unlocking
it will deadlock. Attempting to unlock a mutex locked by a different thread results in undefined behavior.
Attempting to unlock an unlocked mutex results in undefined behavior.
PTHREAD_MUTEX_ERRORCHECK This type of mutex provides error checking. A thread attempting to relock this mutex without first unlocking it
will return with an error. A thread attempting to unlock a mutex that another thread has locked will return
with an error. A thread attempting to unlock an unlocked mutex will return with an error.
PTHREAD_MUTEX_RECURSIVE A thread attempting to relock this mutex without first unlocking it will succeed in locking the mutex. The
relocking deadlock that can occur with mutexes of type PTHREAD_MUTEX_NORMAL cannot occur with this type of
mutex. Multiple locks of this mutex require the same number of unlocks to release the mutex before another
thread can acquire the mutex. A thread attempting to unlock a mutex that another thread has locked will return
with an error. A thread attempting to unlock an unlocked mutex will return with an error. This type of mutex is
only supported for mutexes whose process shared attribute is PTHREAD_PROCESS_PRIVATE.
PTHREAD_MUTEX_DEFAULT Attempting to recursively lock a mutex of this type results in undefined behavior. Attempting to unlock a mutex
of this type that was not locked by the calling thread results in undefined behavior. Attempting to unlock a
mutex of this type that is not locked results in undefined behavior. An implementation is allowed to map this
mutex to one of the other mutex types.
RETURN VALUES
Upon successful completion, the pthread_mutexattr_settype() function returns 0. Otherwise, an error number is returned to indicate the
error.
Upon successful completion, the pthread_mutexattr_gettype() function returns 0 and stores the value of the type attribute of attr in the
object referenced by the type parameter. Otherwise an error number is returned to indicate the error.
ERRORS
The pthread_mutexattr_gettype() and pthread_mutexattr_settype() functions will fail if:
EINVAL The value type is invalid.
The pthread_mutexattr_gettype() and pthread_mutexattr_settype() functions may fail if:
EINVAL The value specified by attr is invalid.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
pthread_cond_timedwait(3C), pthread_cond_wait(3C), attributes(5), standards(5)
NOTES
Application should not use a PTHREAD_MUTEX_RECURSIVE mutex with condition variables because the implicit unlock performed for
pthread_cond_wait() or pthread_cond_timedwait() will not actually release the mutex (if it had been locked multiple times). If this occurs,
no other thread can satisfy the condition of the predicate.
SunOS 5.11 23 Mar 2005 pthread_mutexattr_gettype(3C)