Need to delete previous lines

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1. Shell Programming and Scripting

How to delete the previous line after pattern match?

Team, I am writing a shell script to perform few health checks of the system, where I need to delete the previous line in the text file after pattern match using sed (or) awk. Could you please help me out on this? For example, <td> <td style=color:green align=center> </td> </tr>...

2. UNIX for Advanced & Expert Users

How to find a string in a line in UNIX file and delete that line and previous 3 lines ?

Hi , i have a file with data as below.This is same file. But actual file contains to many rows. i want to search for a string "Field 039 00" and delete that line and previous 3 lines in that file.. Can some body suggested me how can i do using either sed or awk command ? Field 004...

3. Shell Programming and Scripting

Append next line to previous lines when NF is less than 0

Hi All, This is very urgent, I've a data file with 1.7 millions rows in the file and the delimiter is cedilla and I need to format the data in such a way that if the NF in the next row is less than 1, it will append that value to previous line. Any help will be appricated. Thanks,...

4. Shell Programming and Scripting

Find and delete file previous to some date

Hello All, I have a directory containing of many .dat file, but with different naming conventions. I want to delete files which are created before and on 10th September 2013. I tried this command to see files which are are the files created before 10th September find path/to/file -type...

5. Shell Programming and Scripting

Remove previous line if next & previous lines have same 4th character.

I want to remove commands having no output. In below text file. bash-3.2$ cat abc_do_it.txt grpg10so>show trunk group all status grpg11so>show trunk group all status grpg12so>show trunk group all status GCPKNYAIGT73IMO 1440 1345 0 0 94 0 0 INSERVICE 93% 0%...

6. Shell Programming and Scripting

Find pattern a delete previous 5 lines

Hi guys, i have the follow problem i need to delete 10 row before the pattern and 1 after and the pattern row itself. file looks like: frect 9.8438 25.8681 10.625 25 . dynprop \ (# \ (call fox_execute(__self))) \ (FOX_VAR_29 \ ...

7. Shell Programming and Scripting

Finding lines matching the Pattern and their previous lines in a file

Hi, I am trying to locate the occurences of certain pattern like 'Possible network disconnect' in a text file. I can get the actual lines matching the pttern using: grep -w 'Possible network disconnect' file_name. But I am more interested in getting the timing of these events which are...

8. Shell Programming and Scripting

Need a script to delete previous versions of files

Hi. I need a script (either bash or perl) that can delete previous versions of files. For instance, from our continuous build process I get directories such as build5_dev_1.21 build5_dev_1.22 build5_dev_1.23 build5_dev_1.24 I need a script that I can run every night (using "at"...

9. Shell Programming and Scripting

Moving next 2 lines contents to previous lines

My input file is aaa bbb ccc a1a b1b c1c a2a b2b c2c I want the output file to look like that: aaa,bbb,ccc a1a,b1b,c1c a2a,b2b,c2c How do I achieve this ?

10. Shell Programming and Scripting

Need to delete previous line after successful seearch

i have a file in following pattreen A: Size = 10 B: Size = 0 C: Size = 220 D: Size = 0 i want to Display only Charecters which have which have Size = 0 The Out put Should be B: D: Can Some one Help

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fmt

fmt(1)							      General Commands Manual							    fmt(1)

NAME

       fmt - format text

SYNOPSIS

       width] [file...]

DESCRIPTION

       The  command is a simple text formatter that fills and joins lines to produce output lines of (up to) the number of characters specified in
       the width option.  The default width is 72.  concatenates the arguments.  If none are given, formats text from the standard input.

       Blank lines are preserved in the output, as is the spacing between words.  does not fill lines beginning with a	period	for  compatibility
       with Nor does it fill lines starting with

       Indentation is preserved in the output and input lines with differing indentation are not joined (unless is used).

       can also be used as an in-line text filter for the command:

       reformats the text between the cursor location and the end of the paragraph.

   Options
       recognizes the following options:

	      Crown margin mode.
		    Preserve the indentation of the first two lines within a paragraph and align the left margin of each subsequent line with that
		    of the second line.  This is useful for tagged paragraphs.

	      Split lines only.
		    Do not join short lines to form longer ones.  This prevents sample lines of code, and other such "formatted" text, from  being
		    unduly combined.

	      Fill output lines to up to
		    width columns.

WARNINGS

       The width option is acceptable for BSD compatibility, but it may go away in future releases.

SEE ALSO

       nroff(1), vi(1).

																	    fmt(1)

Shell Programming and Scripting