|
|
Sponsored Content
Top Forums
UNIX for Dummies Questions & Answers
Help with the functionality of the last (&/or who) command.
Post 302577727 by lsteamer on Tuesday 29th of November 2011 07:34:24 PM
11-29-2011
Help with the functionality of the last (&/or who) command.
I'm a Bash Newbie, hope you guys can help.
n.n
Ok, So I need to make a script that will get a list of the Users that are/have logged in (recently).
I've been wondering how to get it with either the last or the who command.
This Poses a problem, as with who, it ONLY shows the Users Currently logged in, and I need to get users that have recently logged out (Including the time they stayed connected).
So that leaves me the last command, the one I've been using, However, it's giving me quite the problem to display ONLY recent connections. I know about -t, but apparently it shows the connections since the start of the log up to the timeframe set.
Also, When I get that working, What if a user currently logged in has been connected longer than the timeframe I set? Or what if someone has logged in and logged out? It only needs to be displayed once.
Should I go back and try with who?
Some Expert who could lend me a hand? Please Linux/Unix masters! u.u
I would appreciate it a lot.
I've been trying some hours into this, but to no avail.
n.n
Ok, So I need to make a script that will get a list of the Users that are/have logged in (recently).
I've been wondering how to get it with either the last or the who command.
This Poses a problem, as with who, it ONLY shows the Users Currently logged in, and I need to get users that have recently logged out (Including the time they stayed connected).
So that leaves me the last command, the one I've been using, However, it's giving me quite the problem to display ONLY recent connections. I know about -t, but apparently it shows the connections since the start of the log up to the timeframe set.
Also, When I get that working, What if a user currently logged in has been connected longer than the timeframe I set? Or what if someone has logged in and logged out? It only needs to be displayed once.
Should I go back and try with who?
Some Expert who could lend me a hand? Please Linux/Unix masters! u.u
I would appreciate it a lot.
I've been trying some hours into this, but to no avail.
|
|
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello,
I am trying to write a script that has a option of restarting the script from where it failed. I have to write a script called Batch.sh. This script has to run quite a few sql files as shown below:
logcmd.sh -f test1.sql
logcmd.sh -f test2.sql
logcmd.sh -f test3.sql
logcmd.sh -f... (4 Replies)
Discussion started by: rkumar28
4 Replies
2. SuSE
Sir,
I using the following commands in a file (part of a bigger script):
#!/bin/bash
cd /opt/oracle/bin
ls -lt | tail -1 | awk '{print $6}' >> /tmp/ramb.out
If I run this from the command prompt the result is:
2007-05-16
if I run it as a cron job then... (5 Replies)
Discussion started by: rajranibl
5 Replies
3. Shell Programming and Scripting
Hi,
I am running this is korn shell
cp $source/$fname $dest/dir && rm $source/$fname
This was returned:
rm: /dir/file not removed: No such file or directory
The file could be found in the $dest directory which meant the cp was success.
The above code is used in a for loop to move... (5 Replies)
Discussion started by: Leion
5 Replies
4. UNIX for Dummies Questions & Answers
Hi there,
I found a trick to easily postpone a command by a few seconds:
supernova:~# sleep 10 && command &If you logout, the command should still be executed... But not all the time.
Could anyone of you explain me why the following command is executed even after logging out:
supernova:~# sleep... (2 Replies)
Discussion started by: chebarbudo
2 Replies
5. UNIX for Dummies Questions & Answers
Hi friends,
I have a script that sets the env variable path based on different conditions.
Now the new path variable setting should not done in the same terminal or same shell.
Only a new terminal or new shell should have the new path env variable set.
I am able to do this only as follows:
>cd... (1 Reply)
Discussion started by: sowmya005
1 Replies
6. UNIX for Dummies Questions & Answers
Hi everyone, today i need that someone help to understand this particular line of command.
So you can explain to me step by step, it will be great.
---------- Post updated at 11:53 AM ---------- Previous update was at 11:51 AM ---------- (9 Replies)
Discussion started by: Newer
9 Replies
7. Shell Programming and Scripting
Can you explain what this line of script is doing.
What I have understood is :
-- variable C is the name of a software which is either not installed, so it must be installed or allready installed and then should be update if newer version found
-- branch B="$B $C" is to install the software
--... (4 Replies)
Discussion started by: jcdole
4 Replies
8. Shell Programming and Scripting
This script runs tshark, then displays the output. I want to read a keypress at all times throughout this script, especially during the 10 seconds that tshark is running. This code however, only takes input before tshark runs.
#!/bin/bash
main() {
while (( "1" == "1" )) ; do
keypress &&... (3 Replies)
Discussion started by: Kiah07
3 Replies
9. Shell Programming and Scripting
Hi All,
I am trying to run a script which will search for 2 strings(stopped,started) in a text file and echo an output depending on below condition
-bash-3.2$ cat trial1.txt
v
ggg
f
-bash-3.2$ cat trial1.sh
VAR9=` grep 'stopped' /tmp/trial1.txt`
VAR10=` grep 'started'... (4 Replies)
Discussion started by: srkmish
4 Replies
10. UNIX for Beginners Questions & Answers
what is the following bash command does
grep `date +%Y-%m-%d --date='1 day ago'` /path/to/file/FILE_PREFIX_\`date +%Y%m%d --date='1 day ago'`.dsv | grep -v 'ERROR' | cut -d "|" -f 2 | sed 's/^0/27/' (1 Reply)
Discussion started by: tera
1 Replies
LEARN ABOUT FREEBSD
rusers
RUSERS(1) BSD General Commands Manual RUSERS(1) NAME
rusers -- who is logged in to machines on local network SYNOPSIS
rusers [-al] [host ...] DESCRIPTION
The rusers command produces output similar to who(1), but for the list of hosts or all machines on the local network. For each host respond- ing to the rusers query, the hostname with the names of the users currently logged on is printed on each line. The rusers command will wait for one minute to catch late responders. The following options are available: -a Print all machines responding even if no one is currently logged in. -l Print a long format listing. This includes the user name, host name, tty that the user is logged in to, the date and time the user logged in, the amount of time since the user typed on the keyboard, and the remote host they logged in from (if applicable). DIAGNOSTICS
rusers: RPC: Program not registered The rpc.rusersd(8) daemon has not been started on the remote host. rusers: RPC: Timed out A communication error occurred. Either the network is excessively congested, or the rpc.rusersd(8) daemon has termi- nated on the remote host. rusers: RPC: Port mapper failure - RPC: Timed out The remote host is not running the portmapper (see rpcbind(8)), and cannot accommodate any RPC-based services. The host may be down. SEE ALSO
rwho(1), users(1), who(1), rpc.rusersd(8), rpcbind(8) HISTORY
The rusers command appeared in Sun-OS. BUGS
The sorting options are not implemented. BSD
April 23, 1991 BSD