05-22-2005
If you have a filehandle which you previously open()ed for writing, you can print() to it.
9 More Discussions You Might Find Interesting
1. Solaris
Hi
I am getting the uptime output as follows
12:40am up 4 day(s), 18:29, 2 users, load average: 38.97, 36.54, 34.89
The load average is too high .
I have checked the processes , but no process is taking too much cpu time
Please help (3 Replies)
Discussion started by: guy009
3 Replies
2. Shell Programming and Scripting
Hi All,
I have a got a problem ..
I have t files as below:
1.txt contains
-----
-----
-----
column 1, "cat",
column 24, "dog",
column 100, "rat",
-----
-----
-----
2.sh should contain
-----
-----
-----
awk 'BEGIN { printf ("%1s","cat")}' (19 Replies)
Discussion started by: jisha
19 Replies
3. Shell Programming and Scripting
Hi,
I got a list of file that all got the same standard format.
Can anyone teach me how to put the space in all of them?!
Input file:
>nucleotide1
AAAAAAAAACCCGGG
>nucleotide2
GGGGGGCCCCCTTTTA
>nucleotide3
GGTACACCACACTCAC
>nucleotide4
TTTGGAGAGAGACCCC
desired output:... (4 Replies)
Discussion started by: patrick87
4 Replies
4. Solaris
i am using this way to create zone1 and zone2
bash-2.05b# zonecfg -z zone1
zone1: No such zone configured
Use 'create' to begin configuring a new zone.
zonecfg:zone1> create
zonecfg:zone1> set zonepath=/zone/1
zonecfg:zone1> set autoboot=true
zonecfg:zone1> add net
zonecfg:zone1:net>... (6 Replies)
Discussion started by: coxmanchester
6 Replies
5. Linux
Hi,
I am facing problem while accessing samba share on Linux 5.1 from windows, though I have done the same configuration on Linux 4 (Update 2), on Red Hat 4.0 it is working but while on Linux 5.1 these configuration are not working, I have disabled the firewall also.
Kindly suggest me... (1 Reply)
Discussion started by: manoj.solaris
1 Replies
6. Shell Programming and Scripting
can u plz tell me where is the error
echo enter the filename to be searched
read fname
if #-d $fname
then
echo file exists
if
then
echo itsa directory
elif
then
echo its readable
cat $fname
else
echo its not readable
fi
else
... (1 Reply)
Discussion started by: gotam
1 Replies
7. Shell Programming and Scripting
source file is located in (elk.some.com)
/export/elk2/vp141p/Somedir/dist/current/Filename.ear
destination machine(191.hydc.xxx.com)
/export/home/vp141p/ARCHIVE
scp -p vp141p@hstst191.hydc.sbc.com:/export/elk2/vp141p/PM_Build_SBS/Build_PVT_SBS/dist/current/Filename.ear .
The above code is... (5 Replies)
Discussion started by: vishwakar
5 Replies
8. Shell Programming and Scripting
Dear Brothers!
Need your help for the case where I am running one command on prompt and its giving us the correct output, but when i use the same command from shell its directs no output.:wall:
the command on command prompt is
ls -ltrh * | nawk '{if ($5~ '/$'M'/') print $9}' | grep -v... (1 Reply)
Discussion started by: jojo123
1 Replies
9. AIX
Hi,
I am able to login using su - or su directly ,
# prompt is coming, it doesnt ask for password.
any normal user on aix system is login using su - or su .
Please suggest where to change the configuration
direct root login is disabled in /etc/ssh/sshd_config file. (0 Replies)
Discussion started by: manoj.solaris
0 Replies
LEARN ABOUT MOJAVE
io::atomicfile
IO::AtomicFile(3) User Contributed Perl Documentation IO::AtomicFile(3)
NAME
IO::AtomicFile - write a file which is updated atomically
SYNOPSIS
use IO::AtomicFile;
### Write a temp file, and have it install itself when closed:
my $FH = IO::AtomicFile->open("bar.dat", "w");
print $FH "Hello!
";
$FH->close || die "couldn't install atomic file: $!";
### Write a temp file, but delete it before it gets installed:
my $FH = IO::AtomicFile->open("bar.dat", "w");
print $FH "Hello!
";
$FH->delete;
### Write a temp file, but neither install it nor delete it:
my $FH = IO::AtomicFile->open("bar.dat", "w");
print $FH "Hello!
";
$FH->detach;
DESCRIPTION
This module is intended for people who need to update files reliably in the face of unexpected program termination.
For example, you generally don't want to be halfway in the middle of writing /etc/passwd and have your program terminate! Even the act of
writing a single scalar to a filehandle is not atomic.
But this module gives you true atomic updates, via rename(). When you open a file /foo/bar.dat via this module, you are actually opening a
temporary file /foo/bar.dat..TMP, and writing your output there. The act of closing this file (either explicitly via close(), or
implicitly via the destruction of the object) will cause rename() to be called... therefore, from the point of view of the outside world,
the file's contents are updated in a single time quantum.
To ensure that problems do not go undetected, the "close" method done by the destructor will raise a fatal exception if the rename() fails.
The explicit close() just returns undef.
You can also decide at any point to trash the file you've been building.
AUTHOR
Primary Maintainer
David F. Skoll (dfs@roaringpenguin.com).
Original Author
Eryq (eryq@zeegee.com). President, ZeeGee Software Inc (http://www.zeegee.com).
REVISION
$Revision: 1.2 $
perl v5.18.2 2005-02-10 IO::AtomicFile(3)