09-10-2009
lsuser or who may also work for you.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
for secure access purposes I want to know where somebody logs in
working in K shell
I have
who am i= giving user and terminal =gxb pts/4 Jan 22 15:0
finger user => gives all sessions of user
=
Login name: gxb
Directory: /home/gxb ... (17 Replies)
Discussion started by: ghislain
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2. Solaris
Hi,
How do I find who logged in last 30 days? I have last command command, but is there any option to find only last 30 days? Thanks in advance. (0 Replies)
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3. Shell Programming and Scripting
Is there a shell command that will allow me to list index files in the /home directory for all users on a server that have been updated within the past 24 hours?
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4. Shell Programming and Scripting
hi gurus,
i would like to know how can i find logs files which were recently modified or updated? :confused:
using this command?
find . -name "*.log" -mtime ??
so what should i put for mtime?
thanks.
wee (9 Replies)
Discussion started by: lweegp
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5. UNIX for Dummies Questions & Answers
How do I do it? Simple answers preferred... using BASH.. the less code the better.
I want to find out where Indesign is caching PDF tmp data ... I figure this is a good way to do it.. either way i wanna know how to do it. (2 Replies)
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6. Shell Programming and Scripting
Good evening everybody,
I have to find the user owner of the most recently file in the system
How can I do? :confused: (5 Replies)
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7. UNIX for Dummies Questions & Answers
Hi,
Can you guys tell me how do i find the most recently changed files, say an hour before, few hours before, a day before etc....
Thanks!!!! (3 Replies)
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8. UNIX for Dummies Questions & Answers
For the first 3 users only that are currently logged in output their effective user id.
thank you. (6 Replies)
Discussion started by: whyatepies
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9. UNIX for Dummies Questions & Answers
Hi,
I need to find the users logged in the system beside me.
as
uname -u
gives all the user and
uname -um
gives the current user on system.
How can i get result of uname -u minus uname -um .
I want to do it in one line.
tried with grep but not successful. (6 Replies)
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10. Shell Programming and Scripting
Hi,
I'm looking to create a script which will find all the files created in the last 24h in a directory starting with a few different letters and send them to the printer. This would be run through the cron each morning to print the last 24 hours files.
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LEARN ABOUT NETBSD
pcap_get_selectable_fd
PCAP_GET_SELECTABLE_FD(3) Library Functions Manual PCAP_GET_SELECTABLE_FD(3)
NAME
pcap_get_selectable_fd - get a file descriptor on which a select() can be done for a live capture
SYNOPSIS
#include <pcap/pcap.h>
int pcap_get_selectable_fd(pcap_t *p);
DESCRIPTION
pcap_get_selectable_fd() returns, on UNIX, a file descriptor number for a file descriptor on which one can do a select() or poll() to wait
for it to be possible to read packets without blocking, if such a descriptor exists, or -1, if no such descriptor exists. Some network
devices opened with pcap_create() and pcap_activate(), or with pcap_open_live(), do not support select() or poll() (for example, regular
network devices on FreeBSD 4.3 and 4.4, and Endace DAG devices), so -1 is returned for those devices.
Note that on most versions of most BSDs (including Mac OS X) select() and poll() do not work correctly on BPF devices;
pcap_get_selectable_fd() will return a file descriptor on most of those versions (the exceptions being FreeBSD 4.3 and 4.4), a simple
select() or poll() will not return even after the read timeout expires. To work around this, an application that uses select() or poll()
to wait for packets to arrive must put the pcap_t in non-blocking mode, and must arrange that the select() or poll() have a timeout less
than or equal to the read timeout, and must try to read packets after that timeout expires, regardless of whether select() or poll() indi-
cated that the file descriptor for the pcap_t is ready to be read or not. (That workaround will not work in FreeBSD 4.3 and later; how-
ever, in FreeBSD 4.6 and later, select() and poll() work correctly on BPF devices, so the workaround isn't necessary, although it does no
harm.)
Note also that poll() doesn't work on character special files, including BPF devices, in Mac OS X 10.4 and 10.5, so, while select() can be
used on the descriptor returned by pcap_get_selectable_fd(), poll() cannot be used on it those versions of Mac OS X. Kqueues also don't
work on that descriptor. poll(), but not kqueues, work on that descriptor in Mac OS X releases prior to 10.4; poll() and kqueues work on
that descriptor in Mac OS X 10.6 and later.
pcap_get_selectable_fd() is not available on Windows.
RETURN VALUE
A selectable file descriptor is returned if one exists; otherwise, -1 is returned.
SEE ALSO
pcap(3), select(2), poll(2)
5 April 2008 PCAP_GET_SELECTABLE_FD(3)