I have a file like below. It has around 300 lines like below. All the lines starting with # are comments.
For readability, I removed all lines starting with # from vi (vim editor) using the command :g/^#/d . It seemed to have worked.
But, which is more accurate/safe :g/^#/d or :g/^ *#/d and why ? This is super-important configuration file. Hence I want to use the most accurate command.
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'... (2 Replies)
Hi All,
Was wondering how I can do the following....
I have a String as follows
"ACCTRL000005022RRWDKKEEDKDD...."
This string can be in a file called tail.out or in a Variable called $VAR2
Now I have another variable called $VAR1="000004785" (9 bytes long), I need the content of... (5 Replies)
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 (2 Replies)
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 (4 Replies)
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 Replies)
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... (5 Replies)
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 ? (13 Replies)
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.... (2 Replies)
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, (3 Replies)
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 ? (4 Replies)
Discussion started by: omega3
4 Replies
LEARN ABOUT MINIX
ed
ED(1) General Commands Manual ED(1)NAME
ed - editor
SYNOPSIS
ed file
OPTIONS
- Suppress line/byte count messages (for in scripts)
EXAMPLES
ed prog.c # Edit prog.c
echo '1,$p' | ed - file
# Odd way to write 'cat file'
DESCRIPTION
Ed is functionally equivalent to the standard V7 editor, ed. It supports the following commands:
(.) a: append
(.,.)c: change
(.,.)d: delete
e: edit new file"
f: print name of edited file"
(1,$)g: global command
(.) i: insert
(.,.+1)j: join lines together
(.) k: mark
(.) l: print with special characters in octal
(.,.)m: move
(.,.)p: print
q: quit editor"
(.) r: read in new file
(.,.)s: substitute
(1,$)v: like g, except select lines that do not match
(1,$)w: write out edited file
Many of the commands can take one or two addresses, as indicated above. The defaults are shown in parentheses. Thus a appends to the cur-
rent line, and g works on the whole file as default. The dot refers to the current line. Below is a sample editing session with comments
given following the # symbol.
ed prog.c # Edit prog.c
3,20p # Print lines 3 through 20
/whole/ # Find next occurence of whole
s/whole/while/ # Replace whole by while
g/Buf/s//BUF/g # Replace Buf by BUF everywhere
w # Write the file back
q # Exit the editor
Ed is provided for its sentimental value. If you want a line-oriented editor, try ex. If you want a good editor, use elle, elvis, or
mined.
SEE ALSO elvis(1), elle(9), mined(9).
ED(1)