i'm writing some simple scripts to help me learn perl.
why does the print command get called after the shell script is executed?
the purpose of the shell script is to simply echo to the screen "script run". which is does, but before the print command, you can clearly see the shell script is... (3 Replies)
Hi all,
I have sql query as follows. Please write a pro*c program for the following query.
select
sp1.cost_change
||','|| sp1.cost_change_desc
||','|| sp1.reason
||','|| to_char(sp1.active_date,'DD-MON-YYYY HH24:MI:SS')
||','|| sp1.status
||','|| sp1.cost_change_origin... (0 Replies)
hello All,
I need to invoke by perl script some program/command and monitor it for 5
minutes . In case it still running for more then 5 min I need to send a signal which will stop it.
I implemeted this as shown below by using eval & alarm
and I'd like to know if there is a better way to... (1 Reply)
In shell we can find the status of last executed command by $?
In perl what is the command to find the status of last executed command...
Can any one please say???????????????
Thanks,
Prabhu (1 Reply)
Hi!
I got an strange trouble executing a stored procedures that goes inserting line by line on a table. I mus integrate it with perl for an specific task... the hole process is controlled by e Perl script that:
Load a text file calling sqlldr.
Call a stored procedure that process the... (2 Replies)
How to do I get the return code of a subroutine in a perl module if invoke the subroutine as standalone,
I have an module say TestExit.pm and in that i have a subroutine say myTest() which is returns 12, if i were to call the subroutine from
command line like
CASE:1 ( Without an explict... (2 Replies)
Long story short: I'm working inside of a Unix SSH under a bash shell. I have to code a C program that generates a random number. Then I have to call the compiled C program with a Perl program to run the C program 20 times and put all the generated random #s into a text file, then print that text... (1 Reply)
Given the following code inside the function ext3_write_super():
(It's there in Linux kernel 2.6.27.59)
static void ext3_write_super (struct super_block * sb)
{
if (mutex_trylock(&sb->s_lock) != 0)
BUG();
sb->s_dirt = 0;
}
The conditional test at if... (2 Replies)
Hi ,
I have written a shell script to call a java program say load_id.sh .This sh script indeed is executed implicitly in other sh script which calls 2 more sh scripts one by one. I need to check if the load_id.sh (which calls java program) is executed successfully only then continue with... (1 Reply)
I created a program, so a kid can practice there math on it. It dispenses varies math problems and the kid must input an answer. I also want it to grade the work they have done, but I can't find the best place for it to print out the grade.
I have:
if ( $response =~ m/^/ ) {
$user_wants_to_quit... (1 Reply)
Discussion started by: germany1517
1 Replies
LEARN ABOUT DEBIAN
eatmydata
eatmydata(1) General Commands Manual eatmydata(1)NAME
eatmydata - transparently disable fsync() and other data-to-disk synchronization calls
SYNOPSIS
eatmydata [--] command [ command arguments ... ]
DESCRIPTION
eatmydata runs a command in the environment where data-to-disk synchronization calls (like fsync(), fdatasync(), sync(), msync() and open()
O_SYNC / O_DSYNC flags) have no effect. LD_PRELOAD library libeatmydata overrides respective C library calls with custom functions that
don't trigger synchronization but return success nevertheless.
You may use eatmydata in two ways. In normal mode, just execute eatmydata directly and pass a command-to-be-run and its arguments via com-
mand line. In order to use symlink mode, create a symlink to /usr/bin/eatmydata with the filename (a.k.a basename) of another program in
the PATH and execute eatmydata via that symlink. Then eatmydata will find that program in the PATH and run it in the libeatmydata environ-
ment repassing all command line options.
OPTIONS
Please note that eatmydata does not process any command line options in symlink mode. All command line options will be repassed to the
underlying executable as-is.
command
The command to execute. It may be either a full path or the name of the command in PATH. In case command cannot be found in PATH,
eatmydata will fail.
command arguments
Arbitrary number of arguments to pass to the command being executed.
-- Optional command separator for compatibility with similar utilities. Ignored at the moment.
EXAMPLES
Given PATH is /usr/bin and both /usr/bin/aptitude and /usr/bin/eatmydata are installed, the following:
$ ln -s /usr/bin/eatmydata ./aptitude
$ ./aptitude moo
is equivalent to:
$ eatmydata -- aptitude moo
Therefore, you may use symlink mode to automatically run specific programs in the libeatmydata environment whenever you run them from PATH.
For example, given standard PATH settings, just do:
# ln -s /usr/bin/eatmydata /usr/local/bin/aptitude
and enjoy sync-free aptitude system-wide.
AUTHOR
The eatmydata wrapper around libeatmydata LD_PRELOAD library was written by Modestas Vainius <modax@debian.org>
November 2010 eatmydata(1)