Insert new pattern in newline after the nth occurrence of a line pattern

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1. Shell Programming and Scripting

search a pattern and if pattern found insert new pattern at the begining

I am trying to do some thing like this .. In a file , if pattern found insert new pattern at the begining of the line containing the pattern. example: in a file I have this. gtrow0unit1/gctunit_crrownorth_stage5_outnet_feedthru_pin if i find feedthru_pin want to insert !! at the...

2. Shell Programming and Scripting

Insert two newline after some pattern

Hi, I need to insert two newline characters after matching of a pattern in each line of a file. Eg. If i have a file with contents as follows:- Now, i want output as follows :- i.e., I need to insert two newline characters after the occurance of pattern "</Message>>". Thnx...

3. Shell Programming and Scripting

Count the number of occurrences of a pattern between each occurrence of a different pattern

I need to count the number of occurrences of a pattern, say 'key', between each occurrence of a different pattern, say 'lu'. Here's a portion of the text I'm trying to parse: lu S1234L_149_m1_vg.6, part-att 1, vdp-att 1 p-reserver IID 0xdb registrations: key 4156 4353 0000 0000 ...

4. UNIX for Dummies Questions & Answers

line number of the i-th occurrence of a pattern

Hi all, is there a simple way to obtain the line number of the i-th occurrence of a pattern? I have OCCURRENCE=`grep -io "${STRING_NAME}" ${1}-${8}${EXT}.out_bis| wc -l` which tells me how many occurency I have. I would like to go through them and determine the line number and assign...

5. Shell Programming and Scripting

Getting filename for Nth line pattern match

Hi, I have many scripts in particular directory. And few of the scripts have exit 0 in second line. Now i wanted to list out the scripts name which has the exit 0 in its second line I tried many options , but i can not get the filename along with the nth line pattern match :mad:. Can anyone...

6. UNIX for Dummies Questions & Answers

Printing nth and n+1th line after a pattern match

Hi , I want to print the nth and n+1 lines from a file once it gets a pattern match. For eg: aaa bbb ccc ddd gh jjjj If I find a match for bbb then I need to print bbb as well as 3rd and 4th line from the match.. Please help..Is it possible to get a command using sed :)

7. Shell Programming and Scripting

Insert certain field of matched pattern line above pattern

Hello every, I am stuck in a problem. I have file like this. I want to add the fifth field of the match pattern line above the lines starting with "# @D". The delimiter is "|" eg > # @D0.00016870300|0.05501020000|12876|12934|3||Qp||Pleistocene||"3 Qp Pleistocene"|Q # @P...

8. Shell Programming and Scripting

How to display when nth line match a pattern?

Hi All, I have sample of listing as following Database 2 entry: Database alias = PXRES Database name = PXRES Local database directory = /db2/data1/db2phnx Database release level = d.00 Comment ...

9. Shell Programming and Scripting

Insert content of file before the first occurrence of a line starts with a pattern in another file

Hi all, I'm new to scripting.. facing some problems while inserting content of a file into another file... I want to insert content of a file (file2) into file1, before first occurrence of "line starts with pattern" in file1 file1 ====== working on linux its unix world working on...

10. Shell Programming and Scripting

awk to extract and print first occurrence of pattern in each line

I am trying to use awk to extract and print the first ocurrence of NM_ and NP_ with a : before in each line. The input file is tab-delimeted, but the output does not need to be. The below does execute but prints all the lines in the file not just the patterns. Thank you :). file tab-delimeted ...

LEARN ABOUT DEBIAN

wall

WALL(1) 							   User Commands							   WALL(1)

NAME

     wall -- write a message to users

SYNOPSIS

     wall [-n] [-t TIMEOUT] [file]

DESCRIPTION

     Wall displays the contents of file or, by default, its standard input, on the terminals of all currently logged in users. The command will
     cut over 79 character long lines to new lines. Short lines are white space padded to have 79 characters. The command will always put carriage
     return and new line at the end of each line.

     Only the super-user can write on the terminals of users who have chosen to deny messages or are using a program which automatically denies
     messages.

     Reading from a file is refused when the invoker is not superuser and the program is suid or sgid.

OPTIONS

     -n, --nobanner
		 Supress banner

     -t, --timeout TIMEOUT
		 Write timeout to terminals in seconds. Argument must be positive integer. Default value is 300 seconds, which is a legacy from
		 time when people ran terminals over modem lines.

     -V, --version
		 Output version and exit.

     -h, --help  Output help and exit.

SEE ALSO

     mesg(1), talk(1), write(1), shutdown(8)

HISTORY

     A wall command appeared in Version 7 AT&T UNIX.

AVAILABILITY

     The wall command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

util-linux							   April 2011								util-linux

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

search a pattern and if pattern found insert new pattern at the begining

Discussion started by: pitagi

2. Shell Programming and Scripting

Insert two newline after some pattern

Discussion started by: DTechBuddy

3. Shell Programming and Scripting

Count the number of occurrences of a pattern between each occurrence of a different pattern

Discussion started by: slipstream

4. UNIX for Dummies Questions & Answers

line number of the i-th occurrence of a pattern

Discussion started by: f_o_555