what's the proper syntax to redirect output, including all errors?
ls -la > direct.list makes out put file direct.list
but if i'm running a script and i want to include the errors, would i type something like:
myscript.scr 2> out_list.txt or will that get the errors only? (1 Reply)
I want to check whether the variable read from the console is number or character , so i used echo $option|grep and checked the reuslt returned by grep cmd using $?
But since I use echo the value is getting printed in the screen , I want to supress the o/p. Can anyone suggest how this can be... (1 Reply)
hi
I'm new here so my question maybe be retarded or out of place:
Is there a way to suppress the "No such file or directory" error message when using the "ls" command ?
thanks (5 Replies)
I have code which at the moment only catches the command/program output if the program runs correctly, which is a small problem as I would like to capture everything from stdout inclusive of errors
FILE *fp;
fp = popen(command.c_str(), "r");
while(fgets(cbuf, 1024, fp) != NULL){
.....do stuff... (1 Reply)
Hi,
I'm trying to spawn a telnet process and trying to do some actions in the remote host using expect script. I would like to know how to suppress all the output in order the user using the script should not be able to see any actions done on the remote host. I tried using the "log_user 0"... (8 Replies)
Need help redirecting output to a file including errors if any,I have 2 script namely push.ksh and run.ksh, I'm scp'ing push.ksh to another server and executing remotely via run.ksh, the script run.ksh runs locally but does not capture any errors in "servername.out" file (I tried testing various... (10 Replies)
for
ga016dgf -> /usr/bin/last | cut -c1-3
Invalid record size. Unable to continue ...
any ideas?
running on
ga016dgf -> uname -a
HP-UX ga016dgf B.11.31 U ia64 1246079591 unlimited-user license
thank you.
Video tutorial on how to use code tags in The UNIX and Linux Forums. (4 Replies)
Hi folks,
I am trying to send an email in Perl script with the below code.
I have written the code in Padre IDE and installed all the required modules(Mail::Sendmail) and executed the code.
It is neither showing errors nor giving the output. I havnt received an mail after running the below... (1 Reply)
This script produces no errors. It also does not produce an output file. Any ideas?
#!/usr/bin/python
import tarfile
output_filename = 'etc.tar'
source_dir = '/etc/'
#To build a .tar.gz for an entire directory tree:
def make_tarfile(output_filename, source_dir):
with... (2 Replies)
Discussion started by: bash_in_my_head
2 Replies
LEARN ABOUT MOJAVE
null
null(n) null(n)
__________________________________________________________________________________________________________________________________________________NAME
null - Create and manipulate null channels
SYNOPSIS
package require Tcl
package require memchan
null
_________________________________________________________________DESCRIPTION
The command described here is only available in a not-yet released version of the package. Use the CVS to get the sources.
null creates a null channel which absorbs everything written into it. Reading from it is not possible, or rather will always return zero
bytes. These channels are essentially Tcl-specific variants of the null device for unixoid operating systems (/dev/null). Transfer-
ing the generated channel between interpreters is possible but does not make much sense.
OPTIONS
Memory channels created by null provide one additional option to set or query.
-delay ?milliseconds?
A null channel is always writable and readable. This means that all fileevent-handlers will fire continuously. To avoid starvation
of other event sources the events raised by this channel type have a configurable delay. This option is set in milliseconds and
defaults to 5.
A null channel is always writable and never readable. This means that a writable fileevent-handler will fire continuously and a readable
fileevent-handler never at all. The exception to the latter is only the destruction of the channel which will cause the delivery of an eof
event to a readable handler.
SEE ALSO
fifo, fifo2, memchan, random, zero
KEYWORDS
channel, i/o, in-memory channel, null
COPYRIGHT
Copyright (c) 1996-2003 Andreas Kupries <andreas_kupries@users.sourceforge.net>
Memory channels 2.2 null(n)