Hi,
How do i grep unique occurrences from a file.
I have a log file with multiple occurrences of 'foo' for instance. When i do:
grep foo, I get all the lines that contain foo.
Is there any way to get only one line for foo?
Example file:
foo at 09.01am Fri 11 May 2007
foo at 09.13am... (6 Replies)
People, I need your help with making a script which will
1. take as an input the number of lines, smth like this:
((RUBROBACTER_1_PE1288
(((SALINISPORA_1_PE1863
SALINISPORA_1_PE1828)100
((NOCARDIOIDES_2_PE2419
PROPIONIBACTERIUM_1_PE1395)96
((((((((CORYNEBACTERIUM_1_PE1119... (3 Replies)
Hello ,
I need some help to pull the data from different files, simultaneously for the string provided.
I want to search below strings.
PTN:3763427632478
IDB:3298734287438
PTN:8734983298738
From the files BELOW
CODE_FILE_LOG1
CODE_FILE_LOG2
CODE_FILE_LOG3
CODE_FILE_LOG4 (3 Replies)
Hi,
I tried to adapt bartus's solution to my problem, without success. I want to replace all the occurences of this:
with:
, where something can contain an arbitrary number of balanced parens and brakets.
Any ideas ?
Best, (1 Reply)
Hi,
My developer is on vacation and I am not sure if there is something which is easier for this.
I have an array of strings. Each string in the array has "%" characters in it. I have to get the string(s) which have the least number of "%" in them.
I know how I can get occurrences :
... (7 Replies)
Assistance on work 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:
Files stored in ... (1 Reply)
I have this code
TrackingId:1362412470675;MSISDN:; INFO - number of clietns:3:Received response is: EMSResponse , protocolVersion=5, purchaseOptions=null, serviceData=ServiceData , screenData=CanvasData ]], title=null, titleResource=MessageResource], screenType=null]], serviceId=idBamboo,... (7 Replies)
Hi,
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.94 Safari/537.36
How can I grep for the strings chrome and safari from a file, and if chrome print Chrome/40.0.2214.94 to a file and also count the number of times chrome is found?
... (4 Replies)
Hi All,
Good morning
I have a below code which is working & getting expected output. the problem in this code is it is executing 3 if conditions, my requirement is
suppose if first condition is success then it should print echo statement & exit from if condition
else if the 1st if condition... (4 Replies)
Here is my grep string to print only the last occurrence, with before and after lines. Note that the tail Argument is sum of B and A args + 1, so that it prints the data of only the last 1 match. Now I need to print last 2 such matches. I thought of doubling the tail arg like 5+5+1 (For -- line),... (2 Replies)
Discussion started by: samjna
2 Replies
LEARN ABOUT LINUX
tac
TAC(1) User Commands TAC(1)NAME
tac - concatenate and print files in reverse
SYNOPSIS
tac [OPTION]... [FILE]...
DESCRIPTION
Write each FILE to standard output, last line first. With no FILE, or when FILE is -, read standard input.
Mandatory arguments to long options are mandatory for short options too.
-b, --before
attach the separator before instead of after
-r, --regex
interpret the separator as a regular expression
-s, --separator=STRING
use STRING as the separator instead of newline
--help display this help and exit
--version
output version information and exit
AUTHOR
Written by Jay Lepreau and David MacKenzie.
REPORTING BUGS
Report tac bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report tac translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO rev(1).
The full documentation for tac is maintained as a Texinfo manual. If the info and tac programs are properly installed at your site, the
command
info coreutils 'tac invocation'
should give you access to the complete manual.
GNU coreutils 8.5 February 2011 TAC(1)