Replacing specific lines with another lines Post: 302643645

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

replacing specific lines in a file

Hi there I have a file which has the lines # Serial number for hostid EXP_SERIAL_="" These lines could be anywhere in the file as far as line numbers go, I would like replace these two lines with # Serial number for hostid $var1 EXP_SERIAL_$var1="$var2" Is there a quick and simple...

2. Shell Programming and Scripting

replacing new lines in all files of a directory containing old lines

Hi all, I am trying to replace a few lines with other lines of all files in a directory which contain those few lines. say - there are some 10 files in a dir having the same 4 lines as 1.txt at the starting 1.txt line 1 line 2 line 3 line 4 .......................................

3. Shell Programming and Scripting

Printing all lines before a specific string and a custom message 2 lines after

Hello all, I need to print all the lines before a specific string and print a custom message 2 lines after that. So far I have managed to print everything up the string, inclusively, but I can't figure out how to print the 2 lines after that and the custom message. My code thus far is:...

4. Shell Programming and Scripting

Help in replacing two blank lines with two lines of diff data

Hi.. I'm facing a trouble in replacing two blank lines in a file using shell script... I used sed to search a line and insert two blank lines after the searchd line using the following sed command. sed "/data/{G;G;}/" filename . In the file, after data tag, two lines got inserted blank lines.....

5. UNIX for Dummies Questions & Answers

Finding lines with a regular expression, replacing them with blank lines

So the tag for this forum says all newbies welcome... All I want to do is go through my file and find lines which contain a given string of characters then replace these with a blank line. I really tried to find a simple command to do this but failed. Here's what I did come up with though: ...

6. Shell Programming and Scripting

Summing over specific lines and replacing the lines with the sum using sed, awk

Hi friends, This is sed & awk type question. I have a text file which has numbers spread all over the file. I want to sum the series of numbers whenever i find it and produce an output file with the sum. For example ###start of input text file #### abc def ghi 1 2 3 4 kjld random...

7. UNIX for Dummies Questions & Answers

Extract lines with specific words with addition 2 lines before and after

Dear all, Greetings. I would like to ask for your help to extract lines with specific words in addition 2 lines before and after these lines by using awk or sed. For example, the input file is: 1 ak1 abc1.0 1 ak2 abc1.0 1 ak3 abc1.0 1 ak4 abc1.0 1 ak5 abc1.1 1 ak6 abc1.1 1 ak7...

8. Shell Programming and Scripting

Summing over specific lines and replacing the lines with the sum

Hi friends, This is sed & awk type question. It is slightly different from my previous question. I have a text file which has numbers spread all over the file. I want to sum the series of numbers (but no more than 10 numbers in series) whenever i find it and produce an output file with the...

9. Shell Programming and Scripting

ksh sed - Extract specific lines with mulitple occurance of interesting lines

Data file example I look for primary and * to isolate the interesting slot number. slot=`sed '/^primary$/,/\*/!d' filename | tail -1 | sed s'/*//' | awk '{print $1" "$2}'` Now I want to get the Touch line for only the associate slot number, in this case, because the asterisk...

10. UNIX for Beginners Questions & Answers

How to print lines from a files with specific start and end patterns and pick only the last lines?

Hi, I need to print lines which are matching with start pattern "SELECT" and END PATTERN ";" and only select the last "select" statement including the ";" . I have attached sample input file and the desired input should be as: INPUT FORMAT: SELECT ABCD, DEFGH, DFGHJ, JKLMN, AXCVB,...

LEARN ABOUT BSD

uniq

UNIQ(1) 						      General Commands Manual							   UNIQ(1)

NAME

       uniq - report repeated lines in a file

SYNOPSIS

       uniq [ -udc [ +n ] [ -n ] ] [ input [ output ] ]

DESCRIPTION

       Uniq  reads  the  input file comparing adjacent lines.  In the normal case, the second and succeeding copies of repeated lines are removed;
       the remainder is written on the output file.  Note that repeated lines must be adjacent in order to be found; see sort(1).  If the -u  flag
       is  used, just the lines that are not repeated in the original file are output.	The -d option specifies that one copy of just the repeated
       lines is to be written.	The normal mode output is the union of the -u and -d mode outputs.

       The -c option supersedes -u and -d and generates an output report in default style but with each line preceded by a count of the number	of
       times it occurred.

       The n arguments specify skipping an initial portion of each line in the comparison:

       -n      The  first n fields together with any blanks before each are ignored.  A field is defined as a string of non-space, non-tab charac-
	       ters separated by tabs and spaces from its neighbors.

       +n      The first n characters are ignored.  Fields are skipped before characters.

SEE ALSO

       sort(1), comm(1)

7th Edition							  April 29, 1985							   UNIQ(1)