I have 2 questions:
1- How did you learn bash scripting so well?
2- I have to look at the whole /var/log/wtmp files. There are so many of them and I have to add them to one file but I can't this is what I did:
Code:
# Check for existing /tmp/tst folder
if [ "/tmp/tst" != "" ]; then
rm -rf /tmp/tst
# Make a directory in /tmp called tst
mkdir -p /tmp/tst
# Copy wtmp files in /tmp/tst folder and unzip them:
cp -f /var/log/wtmp* /tmp/tst/
fi
bzip2 -d /tmp/tst/wtmp-*.bz2 | last -f wtmp-* > wtmpfile
cat wtmpfile
Then I have to add all the logged time of my users together and give a total as output. In your script you just used "last" command. which gives you only information from present machine not all other servers on the network.
correct me if I am wrong....
hi.
I need a bash script which can login to an other mashin via SSH and then run some commands and then return the result to my mashine.
I dont know where to begin, I think first I will need a ssh connection, dont know how to make it,
then , do I need a ftp connection between the 2 mashins to... (5 Replies)
hello
anyone have done ssh login script without "expect"
(automatic login from host A / user b to Host B / user b without enter any passwords)?
cheers (2 Replies)
Hi,
When I run the following script
#!/bin/sh
email="rc@dll.com"
subject="response times are more than a SECOND"
rt=`tail audit.log | grep -i operationResponseTime | awk '{print $2}'`
if
then
### Mail the file to the mailbox
mail -s $subject $email <<-end
$rt
~.... (3 Replies)
Ok, there's been a good number of posts about this, but here goes. I want a script to log in to a system via ssh without using keys.
This will be used to log in to Cisco IOS devices.
I have tried the following, but could not get it to work:
SSH login expect shell script to supply username and... (1 Reply)
Hi,
I am a complete Unix novice and need some help with creating a login shell script. I have created a file with user details i.e. PIN, name etc and require help in recalling the specified details from the file and being prompted for a password on login. Any help would be very much appreciated.... (0 Replies)
Hello, first of all, I am a pretty experience c++ programmer, but have never really bothered learning bash scripting at all, so I know conceptually things that can be done in c++, but I'm not too sure about bash. I'm trying to learn Bash, and wanted to start out with a practical application. So I... (1 Reply)
Dear All
When I start the AIX(6100-06)audit subsystem.
the log will save in /audit/stream.out (or /audit/trail), but in default when /audit/stream.out to grow up to 150MB.
It will replace the original /audit/stream.out (or /audit/trail).
Then the /audit/stream.out become empty and... (2 Replies)
In bourne shell the PID generated for the command "ps" matches my login id PID in the command "who -Hu" but in bash/linux the PID generated with the same commands are different . Why so? (2 Replies)
Hello everyone.
I'm a Linux novice trying out a lot of bash scripting lately, as it is so very addictive.
Lately I have been setting up one of my boxes remotely and have been hardening it as much as possible. Please allow me to explain the scenario, as it does tend to become a little... (1 Reply)
I'm new to utilities like socat and netcat and I'm not clear if they will do what I need.
I have a "compileDeployStartWebServer.sh" script and a "StartBrowser.sh" script that are started by emacs/elisp at the same time in two different processes.
I'm using Cygwin bash on Windows 10.
My... (3 Replies)
Discussion started by: siegfried
3 Replies
LEARN ABOUT OSF1
ac
ac(8) System Manager's Manual ac(8)NAME
ac - Outputs connect-session records
SYNOPSIS
ac [-dp] [-w filename] [user(s) ...]
FLAGS
Outputs the total connect time for each midnight-to-midnight period for which a wtmp file exists. When user(s) is specified, this flag lim-
its the output to the login names specified by any user(s) parameter(s). Outputs the connect time total by individual login name of the
user specified with the -p flag and the user(s) parameter. Omission of this flag permits a total only for the midnight-to-midnight time
period for all logged in users to be produced. Specifies a wtmp file other than the /var/adm/wtmp file. The wtmp file you access for data
may have been created automatically by some shell script administration command (for example, runacct) or manually by the system adminis-
trator when the original /var/adm/wtmp file becomes too large.
DESCRIPTION
The ac command prints to the default output device the total connect time in hours to the nearest hundredth for all users, or the connect
time for any user(s) specified with the -p flag. It also prints the names of users specified by the user(s) parameter who have logged in
during the life of the current /var/adm/wtmp file.
Connect-time records are written by the init and the login programs and are collected in the /var/adm/wtmp file, when such a file exists.
When a /var/adm/wtmp file does not exist, no connect-time accounting records are written; consequently, when connect-time records are
wanted, the system administrator should create a /var/adm/wtmp file that has an initial record length of 0 (zero). Records in wtmp files
(there may be more than one such file) should be processed periodically to keep the files from becoming too large.
When you use the runacct command in a shell script, additional wtmp files can be automatically created whenever the current wtmp file
becomes too large. You can output the contents of any of these other files when you specify the -w flag and the desired wtmp filename.
The ac command is run independently with respect to any accounting shell procedure created or run by any of the acct/* shell procedures or
runacct commands.
EXAMPLES
To obtain an output of the total connect time for all users who have logged in during the life of the current wtmp data file, enter:
/usr/sbin/ac To obtain an output of the total connect time for grossman and mcwhinney as recorded in the default wtmp data file,
enter:
/usr/sbin/ac grossman mcwhinney To obtain an output of the connect time subtotals for grossman and mcwhinney as recorded in the
default wtmp data file, enter:
/usr/sbin/ac -p grossman mcwhinney
FILES
Specifies the command path. Is the active data file for the collection of connect-time records.
RELATED INFORMATION
Commands: login(1), init(8) delim off
ac(8)
02-18-2012
this is what I did: