Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: grep commands
Top Forums UNIX for Dummies Questions & Answers grep commands Post 302493382 by ViruS89 on Wednesday 2nd of February 2011 02:04:07 PM
Old 02-02-2011
grep commands
I need your's help to display user with greep command form /etc/passwd

1. to display all login to begin and finishing with letter a or b
Code:
etc.users
 admina
 bserb
 broota

2. beginning and finishing with the same sign
Code:
etc. users
aghata:....
roootr:....

3. to contain what the least three identical signs standing by me
Code:
etc. users
 rooot:.....
admmmin:.....
ussser...

4. it including five signs which was can read backwards
Code:
etc. users
      Do geese see God?  ->  do Geese see goD
      Devil lived   -> devil liveD


sorry bad section
Code:
https://www.unix.com/homework-coursework-questions/

Last edited by ViruS89; 02-02-2011 at 03:21 PM..
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

find and grep commands

I'm having trouble with the following commands i. count the number of lines which end in a 4 letter word grep '{4\}$' bfile <<seems to print out everything abc abc abcd joe joe john bob bill gregory greg greg gregory the grep command prints out the lines with 4 letter words and the... (3 Replies)
Discussion started by: StrengthThaDon
3 Replies

2. Shell Programming and Scripting

Grep commands in loop

Hi All, Reference to my previous post I need to compare all the lines in the file1 with file2 for this condition if file1 {$3,$5} ==file2 {$3,$5} then grep file2{$1}latest date. need output in file3 10/04/2008 09/04/2008 09/04/2008 08/04/2008 can anyone suggest me Thanks... (0 Replies)
Discussion started by: karthikn7974
0 Replies

3. Shell Programming and Scripting

Difference between 2 grep - commands

Hi, I need to know the difference between this commands: grep * *search* grep "*" *search* As far as i know does the 2nd command search for files which have a name with *search* and greps then all which have chars from a-z in the file content. But was does the first command?? Best... (1 Reply)
Discussion started by: xus
1 Replies

4. Shell Programming and Scripting

echo and grep commands

Hey im new in this...anything will be helpful... The user will input the word or phrase .... I want to search the user input in file (by lines) but not all then with this line search on another file ( with the specific line) and show to the user. Example: file1.txt ======= a aa aaa... (2 Replies)
Discussion started by: Sundown
2 Replies

5. Shell Programming and Scripting

Grep commands & format

I have these grep commands and need to put them next each other (in horizontal layout). cat /tmp/dsmc.out |grep Done cat /tmp/dsmc.out |grep "Elapsed processing time:" cat /tmp/dsmc.out |grep "Client date/time:" cat /tmp/dsmc.out |grep "Total number of bytes transferred:" so that it... (6 Replies)
Discussion started by: Daniel Gate
6 Replies

6. Shell Programming and Scripting

Join two commands sed and grep

Hi all, I have two separate commands which I would like to join. Basically, I want to match a line and insert a character at the end of the previous line to the matched line Here is what I have gotgrep -B1 '^>' sed 's/$/*/' Any help is much appreciated thanks (5 Replies)
Discussion started by: kaav06
5 Replies

7. Shell Programming and Scripting

Grep Commands

I have a text file that has multiple lines in it with multiple dates and years. I was trying to figure out the best way to remove the line that had 2010 and 2011 to an archive file. We only need to keep the 2012 and 2013 lines in the original file. The following is a sample line in the txt file:... (2 Replies)
Discussion started by: smkremer
2 Replies

8. Shell Programming and Scripting

Help with ls, grep commands

Oracle Linux 6.4/Bash shell I have six files as shown below. Using ls/grep (or anything) , I need to list all files which start with the pattern stomper but not the ones which ends with 1. $ touch stompera $ touch stomperb $ touch stomperc $ touch stompera1 $ touch stomperb1 $ touch... (7 Replies)
Discussion started by: kraljic
7 Replies

9. Homework & Coursework Questions

Grep commands: need some practice help please

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: Use the less command to view the words file. To see the results of a grep that returns many rows, pipe the... (3 Replies)
Discussion started by: asaint
3 Replies

10. UNIX for Beginners Questions & Answers

Task grep and awk commands

Hi everyone, I have a question, please help me. awk -F: '$3<75' /etc/passwd grep -ir nashorn ./ | grep "^*\.java" what do these commands do ? Thanks (2 Replies)
Discussion started by: burak171
2 Replies

LEARN ABOUT DEBIAN

chsh

CHSH(1) 							   User Commands							   CHSH(1)

NAME

       chsh - change login shell

SYNOPSIS

       chsh [options] [LOGIN]

DESCRIPTION

       The chsh command changes the user login shell. This determines the name of the user's initial login command. A normal user may only change
       the login shell for her own account; the superuser may change the login shell for any account.

OPTIONS

       The options which apply to the chsh command are:

       -h, --help
	   Display help message and exit.

       -R, --root CHROOT_DIR
	   Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory.

       -s, --shell SHELL
	   The name of the user's new login shell. Setting this field to blank causes the system to select the default login shell.

       If the -s option is not selected, chsh operates in an interactive fashion, prompting the user with the current login shell. Enter the new
       value to change the shell, or leave the line blank to use the current one. The current shell is displayed between a pair of [ ] marks.

NOTE

       The only restriction placed on the login shell is that the command name must be listed in /etc/shells, unless the invoker is the superuser,
       and then any value may be added. An account with a restricted login shell may not change her login shell. For this reason, placing /bin/rsh
       in /etc/shells is discouraged since accidentally changing to a restricted shell would prevent the user from ever changing her login shell
       back to its original value.

FILES

       /etc/passwd
	   User account information.

       /etc/shells
	   List of valid login shells.

       /etc/login.defs
	   Shadow password suite configuration.

SEE ALSO

       chfn(1), login.defs(5), passwd(5).

shadow-utils 4.1.5.1						    05/25/2012								   CHSH(1)
All times are GMT -4. The time now is 03:01 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy