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Top Forums Shell Programming and Scripting Can username col be enlarged in ps output Post 302245887 by otheus on Saturday 11th of October 2008 01:13:58 PM
Old 10-11-2008
I thought that officially, user names were limited to 8 characters long in distinction. That is, you can have a name longer than that, but comparisons will stop after 8 characters. I'm not totally sure, though.

In Linux, the ps command is highly versatile. You can do something like "ps -o uid,cmd" just to output those two field. Check the man page for all the gory details of the -o option. Moreover, you can get the uid directly from the /proc filesystem if you know the PID. Look at the directory /proc/$$. You'll find the uid hiding in plain sight or in the "stat" output (which is cryptic) or in the owner of the directory itself.
 

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finger(1)                                                          User Commands                                                         finger(1)

NAME
finger - display information about local and remote users SYNOPSIS
finger [-bfhilmpqsw] [username...] finger [-l] [ username@hostname 1 [ @hostname 2 .. .@hostname n...]] finger [-l] [ @hostname 1 [ @hostname 2 .. .@hostname n...]] DESCRIPTION
By default, the finger command displays in multi-column format the following information about each logged-in user: o user name o user's full name o terminal name (prepended with a `*' (asterisk) if write-permission is denied) o idle time o login time o host name, if logged in remotely Idle time is in minutes if it is a single integer, in hours and minutes if a `:' (colon) is present, or in days and hours if a `d' is present. When one or more username arguments are given, more detailed information is given for each username specified, whether they are logged in or not. username must be that of a local user, and may be a first or last name, or an account name. Information is presented in multi-line format as follows: o the user name and the user's full name o the user's home directory and login shell o time the user logged in if currently logged in, or the time the user last logged in; and the terminal or host from which the user logged in o last time the user received mail, and the last time the user read mail o the first line of the $HOME/.project file, if it exists o the contents of the $HOME/.plan file, if it exists Note: when the comment (GECOS) field in /etc/passwd includes a comma, finger does not display the information following the comma. If the arguments username@hostname1[@hostname2...@hostnamen] or @hostname1[@hostname2...@hostnamen] are used, the request is sent first to hostnamen and forwarded through each hostnamen-1 to hostname1. The program uses the finger user information protocol (see RFC 1288) to query that remote host for information about the named user (if username is specified), or about each logged-in user. The information dis- played is server dependent. As required by RFC 1288, finger passes only printable, 7-bit ASCII data. This behavior may be modified by a system administrator by using the PASS option in /etc/default/finger. Specifying PASS=low allows all characters less than decimal 32 ASCII. Specifying PASS=high allows all characters greater than decimal 126 ASCII. PASS=low,high or PASS=high,low allows both characters less than 32 and greater than 126 to pass through. OPTIONS
The following options are supported, except that the username@hostname form supports only the -l option: -b Suppresses printing the user's home directory and shell in a long format printout. -f Suppresses printing the header that is normally printed in a non-long format printout. -h Suppresses printing of the .project file in a long format printout. -i Forces "idle" output format, which is similar to short format except that only the login name, terminal, login time, and idle time are printed. -l Forces long output format. -m Matches arguments only on user name (not first or last name). -p Suppresses printing of the .plan file in a long format printout. -q Forces quick output format, which is similar to short format except that only the login name, terminal, and login time are printed. -s Forces short output format. -w Suppresses printing the full name in a short format printout. FILES
$HOME/.plan user's plan $HOME/.project user's projects /etc/default/finger finger options file /etc/passwd password file /var/adm/lastlog time of last login /var/adm/utmpx accounting ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWrcmds | +-----------------------------+-----------------------------+ SEE ALSO
passwd(1), who(1), whois(1), passwd(4), attributes(5) Zimmerman, D., The Finger User Information Protocol, RFC 1288, Center for Discrete Mathematics and Theoretical Computer Science (DIMACS), Rutgers University, December 1991. NOTES
The finger user information protocol limits the options that may be used with the remote form of this command. SunOS 5.10 6 Nov 2000 finger(1)
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