WHO(1) General Commands Manual WHO(1)NAME
who - who is on the system
SYNOPSIS
who [ who-file ] [ am I ]
DESCRIPTION
Who, without an argument, lists the login name, terminal name, and login time for each current UNIX user.
Without an argument, who examines the /etc/utmp file to obtain its information. If a file is given, that file is examined. Typically the
given file will be /usr/adm/wtmp, which contains a record of all the logins since it was created. Then who lists logins, logouts, and
crashes since the creation of the wtmp file. Each login is listed with user name, terminal name (with `/dev/' suppressed), and date and
time. When an argument is given, logouts produce a similar line without a user name. Reboots produce a line with `x' in the place of the
device name, and a fossil time indicative of when the system went down.
With two arguments, as in `who am I' (and also `who are you'), who tells who you are logged in as.
FILES
/etc/utmp
SEE ALSO getuid(2), utmp(5)WHO(1)
Check Out this Related Man Page
utmp(4) Kernel Interfaces Manual utmp(4)NAME
utmp, wtmp - Login records
SYNOPSIS
#include <utmp.h>
DESCRIPTION
The utmp file records information about who is currently using the system. The file is a sequence of utmp entries, as defined in struct
utmp in the utmp.h file.
The utmp structure gives the name of the special file associated with the user's terminal, the user's login name, and the time of the login
in the form of time(3). The ut_type field is the type of entry, which can specify several symbolic constant values. The symbolic constants
are defined in the utmp.h file.
The wtmp file records all logins and logouts. A null user name indicates a logout on the associated terminal. A terminal referenced with
a tilde (~) indicates that the system was rebooted at the indicated time. The adjacent pair of entries with terminal names referenced by a
vertical bar (|) or a right brace (}) indicate the system-maintained time just before and just after a date command has changed the sys-
tem's time frame.
The wtmp file is maintained by login(1) and init(8). Neither of these programs creates the file, so, if it is removed, record keeping is
turned off. See ac(8) for information on the file.
FILES RELATED INFORMATION ac(8), init(8), last(8), lastcomm(8), login(1), who(1), wtmpconvert(8). delim off
utmp(4)
Hello All,
I want to build some monitoring of processes in HP-UX 11.x.
Is there any way to get the whole set of commands and arguments instead of the first 60 characters? I read that there's a limitation of the ps -ef command that we can't overcome. In this case is there any other command... (17 Replies)
Hi,
Can any one please let me know the code for implementing
who | sort | lp
Basically I want to implent pipe here. The program can use the existing who, sort and lp
Also please let me know How many processes are created in Unix when the following commands are executed?
$ ls... (17 Replies)
Hi,
I have this line in a file called test.cfg
SOURCEFILE=/usr/platform/sun4v/driver/file.cfg
But i have many occurances of "SOURCEFILE" in test.cfg , i need to search only for this line and replace that line with
SOURCEFILE=/usr/platform/sun4x/driver/file.cfg
again there are many... (17 Replies)
Hi All
I have a ksh script, which is run as the root user. At some point in the script, it needs to check for the user that is running the script. ( The real user that su to root). This is on a sol 8 server, but it displays the user as root instead of my username.
root@host-1 # who am i |... (19 Replies)
Hi Experts,
I am very new to scripting and have a prb since few days and it is urgent to solve so much appreciated if u help me.
i have 2 files
file1.txt
9647810043118
9647810043126
9647810043155
9647810043161
9647810043166
9647810043185
9647810043200
9647810043203
9647810043250... (22 Replies)
I am using 'dd' to clone an entire hard drive which only has Ubuntu 11.10 and some data with no special options. The disks are both 1Tb, However, I did re-partition the target disk with gparted successfully. The new partions are not the same size as the source disk. When starting 'dd' no partitions... (24 Replies)