Delete all lines starting with # character Post: 303002528

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1. Shell Programming and Scripting

Delete lines starting with XX or YY or ZZ or ....

Hi There! My final task for today is to delete lines starting with certain numbers for e.g., my text block is and i want to delete all lines starting with 11 or 17 or 21 I know i can use multiple sed commands like sed '/^11,/d' <filename> sed '/^17,/d' <filename> sed '/^21,/d'...

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In Sed how can I replace starting from the 7th character to the 15th character.

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3. Shell Programming and Scripting

Search the word to be deleted and delete lines above this word starting from P1 to P3

Hi, I have to search a word in a text file and then I have to delete lines above from the word searched . For eg suppose the file is like this: Records P1 10,23423432 ,77:1 ,234:2 P2 10,9089004 ,77:1 ,234:2 ,87:123 ,9898:2 P3 456456 P1 :123,456456546 P2 abc:324234

4. Shell Programming and Scripting

delete lines starting with a pattern

i have a file sample.txt containing i want to delete lines starting with 123 neglecting spaces and tabs. but not lines containing 123. i.e. i want files sample.txt as help me thanxx

5. Shell Programming and Scripting

Delete multiple lines starting with a specific pattern

Hi, just tried some script, awk, sed for the last 2 hours and now need help. Let's say I have a huge file of 800,000 lines like this : It's a tedious job to look through it, I'd like to remove those useless lines in it as there's a few thousands : Or to be even more precise : if line1 =...

6. Shell Programming and Scripting

sed or awk delete character in the lines before and after the matching line

Sample file: This is line one, this is another line, this is the PRIMARY INDEX line l ; This is another line The command should find the line with “PRIMARY INDEX” and remove the last character from the line preceding it (in this case , comma) and remove the first character from the line...

7. Shell Programming and Scripting

Delete lines starting with these strings

Platform : RHEL 5.8 I have text file called myapplication.log . In this file, I have around 800 lines which start with the followng three strings PWRBRKER-3493 PWRBRKER-7834 SCHEDULER-ERROR How can I delete these lines in one go ?

8. Shell Programming and Scripting

How to delete lines starting with specific string?

Dear all, I would like to delete even lines starting with "N" together with their respective titles which are actually odd lines. Below is the example of input file. I would like to remove line 8 and 12 together with its title line, i.e., line 7 and 11, respectively....

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How to grep a line not starting with # from a file (there are two lines starting with # and normal)?

e.g. File name: File.txt cat File.txt Result: #INBOUND_QUEUE=FAQ1 INBOUND_QUEUE=FAQ2 I want to get the value for one which is not commented out. Thanks,

10. Shell Programming and Scripting

Delete all lines except a line starting with string

Shell : bash OS : RHEL 6.8 I have a file like below. $ cat pattern.txt hello txt1 txt2 txt3 some other text txt4 I want to remove all lines in this file except the ones starting with txt . How can I do this ?

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intro

INTRO(3)						     Linux Programmer's Manual							  INTRO(3)

NAME

       intro - Introduction to library functions

DESCRIPTION

       This  chapter  describes all library functions excluding the library functions described in chapter 2, which implement system calls.  There
       are various function groups which can be identified by a letter which is appended to the chapter number:

       (3C)   These functions, the functions from chapter 2 and from chapter 3S are contained in the C standard library libc, which will  be  used
	      by cc(1) by default.

       (3S)   These functions are parts of the stdio(3) library.  They are contained in the standard C library libc.

       (3M)   These  functions	are contained in the arithmetic library libm.  They are used by the f77(1) FORTRAN compiler by default, but not by
	      the cc(1) C compiler, which needs the option -lm.

       (3F)   These functions are part of the FORTRAN library libF77.  There are no special compiler flags needed to use these functions.

       (3X)   Various special libraries.  The manual pages documenting their functions specify the library names.

AUTHORS

       Look at the header of the manual page for the author(s) and copyright conditions.  Note that these can be different from page to page!

Linux								    1995-12-13								  INTRO(3)