To obtain information, the who command usually examines the /etc/utmp file. If you specify another file with the File parameter,
the who command examines that file instead. This new file is usually the /var/adm/wtmp or /etc/security/failedlogin file.
Normally a plain last shows all entries. Though you can try who -a /var/adm/wtmp if it shows more.
/etc/utmp contains much less entries than /var/adm/wtmp.
/etc/utmp stores the logins, while /var/adm/wtmp stores archives everything together with information that will be used if you are using the Advanced Accounting facilities of AIX.
I just did a check on a box and here is the outcome:
Do you maybe have a job that tries to save space in /var and just overwrites or nulls /var/adm/wtmp? It can happen on machines, that are very busy login-wise, that this file can get very big very fast. Maybe that's the reason a last shows only last's day entries.
Hello people,
Need favour. The problem I have is that, I need to develop a unix shell script that performs recurring exports of data from a csv file to an oracle database. Basically, the csv file contains just the first name and last name will be dumped to an Unix server. The data from these... (3 Replies)
Hi
I need help on this. Its very urgent for me.. please try to help me out..
I have data in tables in DB2 database. I would like to export the data from DB2 tables into a text file, which has to be space delimited. so that I can carry out awk, grep operations on that file. I tried to export... (2 Replies)
Hi ,
I would like to get some suggestion from the experts.
My requirement is to export oracle table data as an xml file.
Any unix/linux tools, scripts available?
Regards, (2 Replies)
Hi,
So I'm kinda new to shell scripts and the like. I've picked up quite a bit of use from browsing the forums here but ran into a new one that I can't seem to find an answer for.
I'm looking to parse/find a string AND the next 15 or so charachters that follow the string within a text file... (1 Reply)
Hi,
I am trying to export the data to an .ixf file.
I have read the table names from a .dat file and those table name should be passed to the select * from schema.TABLENAME query .
I am trying the below loop
while read TABLE; do
db2 EXPORT TO ~/data_export/$TABLE.ixf OF IXF MESSAGES... (5 Replies)
Hi All
I will run the same script every day in corn and output should go to same CSV file but in different row with dates on it. Below is my example in attached format.
Script i am using to collect switch port online
DATE=`date '+%d-%m-%y'`
for f in `cat... (1 Reply)
Hi All ,
I am stuck on the below situation.I have a table called "test" which are created on hive.I need to export the data from hive to a file(test.txt) on local unix system.I have tried the below command ,but its giving the exception .
hive -e "select * from test " > /home/user/test.txt ;
... (1 Reply)
Hi all,
Is there any out there have a brilliant idea on how to export html table data as .csv or write to txt file with separated comma and also get the filename of link from every table and put one line per rows each table.
Please see the attached html and PNG of what it looks like.
... (7 Replies)
Greetings,
After a few hours of trial and error, I decide to ask for some help.
I am new to AWK and shell script, so please don't laugh :p
I made the below script, to gather data from some logs and have the output into a CSV file :
#!/bin/sh
#Script to collect Errors
... (9 Replies)
Discussion started by: Yagami_Sama
9 Replies
LEARN ABOUT OPENDARWIN
who
WHO(1) BSD General Commands Manual WHO(1)NAME
who -- display who is on the system
SYNOPSIS
who [-HmqsTu] [am I] [file]
DESCRIPTION
The who utility displays information about currently logged in users. By default, this includes the login name, tty name, date and time of
login and remote hostname if not local.
The options are as follows:
-H Write column headings above the output.
-m Show information about the terminal attached to standard input only.
-q ``Quick mode'': List the names and number of logged in users in columns. All other command line options are ignored.
-s Show the name, line and time fields only. This is the default.
-T Indicate whether each user is accepting messages. One of the following characters is written:
+ User is accepting messages.
- User is not accepting messages.
? An error occurred.
-u Show idle time for each user in hours and minutes as hh:mm, '.' if the user has been idle less that a minute, and ``old'' if the user
has been idle more than 24 hours.
am I Equivalent to -m.
By default, who gathers information from the file /var/run/utmp. An alternate file may be specified which is usually /var/log/wtmp (or
/var/log/wtmp.[0-6] depending on site policy as wtmp can grow quite large and daily versions may or may not be kept around after compression
by ac(8)). The wtmp file contains a record of every login, logout, crash, shutdown and date change since wtmp was last truncated or created.
If /var/log/wtmp is being used as the file, the user name may be empty or one of the special characters '|', '}' and '~'. Logouts produce an
output line without any user name. For more information on the special characters, see utmp(5).
ENVIRONMENT
The COLUMNS, LANG, LC_ALL and LC_TIME environment variables affect the execution of who as described in environ(7).
FILES
/var/run/utmp
/var/log/wtmp
/var/log/wtmp.[0-6]
DIAGNOSTICS
The who utility exits 0 on success, and >0 if an error occurs.
SEE ALSO last(1), users(1), w(1), utmp(5)STANDARDS
The who utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
HISTORY
A who command appeared in Version 1 AT&T UNIX.
BSD May 8, 2002 BSD