Basic use of who, cut, grep and pipes?? Post: 302597865

10 More Discussions You Might Find Interesting

1. Filesystems, Disks and Memory

PIPEs and Named PIPEs (FIFO) Buffer size

Hello! How I can increase or decrease predefined pipe buffer size? System FreeBSD 4.9 and RedHat Linux 9.0 Thanks!

2. Shell Programming and Scripting

grep and cut....

hi, i have a simple question: in hpux 11i; this cmd : cat mailtest |grep sekar >test1 gives the output file with the name test1. i want to remove the line which contains the "sekar" and put the result in the new file.... what is the command for that?..

3. Shell Programming and Scripting

cut sed grep or other?

Hi Is there a way to cut the last two characters off a word or number given that this word or number can be of varying length? I have tried something like TEST=`echo $OLD | cut -c 1-5` where $OLD is a variable containing a number like 1234567 which gives a result of 12345. This is fine...

4. Shell Programming and Scripting

tail, grep and cut

Hello all, I have some weird problem that kinda baffles me. Say I have the following test file: claudia:~/tmp$ cat testfile.txt This is a test line This is the second test line And yeah, this is the third test line Then say I want to tail the file, grep for the word "third" then...

5. Shell Programming and Scripting

basic grep question

I think I am doing this correctly, but it is responding very quickly with no results so I am not sure. I need to do a case insensitive grep of all files in my current directory grep -i <keyword> /my/directory is that correct?

6. Shell Programming and Scripting

Basic Grep

I am trying to grep a section of .txt file...but once I grep the certain area of the file I would like to display all lines below it as well....how do I have to go about doing this... example grep "Sidney Crosby" hockey.txt result Sidney Crosby Age Goals Assist Can this be done...

7. Slackware

How should I cut this line using cut and grep?

not sure how to do it. wan't to delete it using cut and grep ince i would use it in the shell. but how must the command be? grep "64.233.181.103 wwwGoogle.com" /etc/hosts | cut -d the delimeter is just a space. can you help meplease. :D

8. Shell Programming and Scripting

Cut Lines using grep

Hi, I have a SQL script with "create table" and "alter table" statements and I want to cut all the alter table statements from original file (A) and move it to a different file (B). Can you please me the option. Thanks a lot for your time.

9. Shell Programming and Scripting

Basic grep -c Question

Hello, I have a csv list which contains a reference and tariff code for every customer we have (~7.2 million) looking something like this: customernumber,tariff 012345678910,T0001 012345678911,T0002 012345678912,T0001-A0001 I have a 2nd list which contains every unique tariff and...

10. Shell Programming and Scripting

Basic grep question

Shell : Bash shell (Fedora 26) In the below text file (output.txt), I need to find all lines starting with the pattern pc. As you can see, only one line matches this condition (pc hello world). But, my below 3 attempts return wrong output. How do I use the grep command correctly here ? ...

LEARN ABOUT OSX

logins

logins(1M)                                                System Administration Commands                                                logins(1M)

NAME

       logins - list user and system login information

SYNOPSIS

       /usr/bin/logins [-admopstux] [-g group...] [-l login_name...]

DESCRIPTION

       This  command  displays  information  on  user  and  system logins known to the system. Contents of the output is controlled by the command
       options and can include the following: user or system login, user id number, passwd account field value (user name or  other  information),
       primary group name, primary group id, multiple group names, multiple group ids, home directory, login shell, and four password aging param-
       eters. The default information is the following: login id, user id, primary group name, primary group id and the account field value.  Out-
       put is sorted by user id, system logins, followed by user logins.

OPTIONS

       Options may be used together. If so, any login that matches any criteria are displayed.

       The following options are supported:

       -a              Add  two  password  expiration  fields to the display. The fields show how many days a password can remain unused before it
                       automatically becomes inactive, and the date that the password expires.

       -d              Selects logins with duplicate uids.

       -g group        Selects all users belonging to group, sorted by login. Multiple groups can be specified as  a  comma-separated  list.  When
                       the  -l  and -g options are combined, a user is only listed once, even if the user belongs to more than one of the selected
                       groups.

       -l login_name...Selects the requested login. Multiple logins can be specified as a  comma-separated  list.  Depending  on  the  nameservice
                       lookup  types  set  in  /etc/nsswitch.conf,  the information can come from the /etc/passwd and  /etc/shadow files and other
                       nameservices. When  the -l and -g options are combined, a user is only listed once, even if the user belongs to  more  than
                       one of the selected groups.

       -m              Displays multiple group membership information.

       -o              Formats output into one line of colon-separated fields.

       -p              Selects logins with no passwords.

       -s              Selects all system logins.

       -t              Sorts output by login instead of by uid.

       -u              Selects all user logins.

       -x              Prints  an  extended  set  of information about each selected user. The extended information includes home directory, login
                       shell and password aging information, each displayed on a separate line. The  password  information  consists  of  password
                       status  (PS for password, NP for no password or LK for locked). If the login is passworded, status is followed by the  date
                       the password was last changed, the number of days required between changes, and the number of days allowed before a  change
                       is  required.   The password aging information shows the time interval that the user receives a password expiration warning
                       message (when logging on) before the password expires.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

SunOS 5.10                                                          5 Jul 1990                                                          logins(1M)

10 More Discussions You Might Find Interesting

1. Filesystems, Disks and Memory

PIPEs and Named PIPEs (FIFO) Buffer size

Discussion started by: Jus

2. Shell Programming and Scripting

grep and cut....

Discussion started by: sekar sundaram

3. Shell Programming and Scripting

cut sed grep or other?

Discussion started by: rleebife

4. Shell Programming and Scripting

tail, grep and cut

Discussion started by: sylaan