I have a file with ~200K lines, I need to delete 4K lines in it. There is no range.
I do have the line numbers of the lines which I want to be deleted.
I did tried using
Code:
> cat del.lines
sed '510d;12d;219d;......;3999d' file
> source del.lines
Word too long.
I even tried pasting the line in shell, it didn't allow, the number of characters in my file in the single line is - 16993.
Hello, I need help in appending the line number of each line to the file and also to get the total number of lines. Can somebody please help me.
I have a file say:
abc
def
ccc
ddd
ffff
The output should be:
Instance1=abc
Instance2=def
Instance3=ccc
Instance4=ddd
Instance5=ffff
... (2 Replies)
I have been googling, but cannot find that works for me.
I have a text file tmp.out with contents:
sadfsdf sdfosuidhfousdhof soduhf osdfu osudfhosudhfd
sdfgsdfg
asdfiojhsdf asdoludhflsdjfhskldjfhsdjdlfsjdhnlj h sdja
ouahsdjdafkljsa
oljhljh
I have another file... (11 Replies)
I have file with 10000 records and i need to delete the lines in single shot based on line number range say from 10 to 51 , 53 to 59 , 105 to 107, 311 to 592 etc... between range works fine for me but how to achive for above case? please help
sed '10,51 {d}' infile > outfile (5 Replies)
This is a variation of an earlier post found here:
unixcom/shell-programming-scripting/159821-merge-two-non-consecutive-lines.html
User Bartus11 was kind enough to solve that example.
Previously, I needed help combining two lines that are non-consecutive in a file. Now I need to do the... (7 Replies)
I have a file that contains 87 lines, each with a set of coordinates (x & y). This file looks like:
1 200.3 -0.3
2 201.7 -0.32
...
87 200.2 -0.314
I have another file which contains data that was taken at certain of these 87 positions. i.e.:
37 125
42 175
86 142
where the first... (1 Reply)
Hi
I am using the following command to delete a line from the file by line number:
line_number=14
sed "${line_number}d" inputfilename > newfilename
Is there a way to modify this command to specify the range of lines to be deleted, lets say from line 14 till line 5 ?
I tried using the... (5 Replies)
Hi,
I have written a script that returns the line number of the pattern i want and i stored the line number in a variable(getlinenumber).Now i want to delete all the lines in a file above this line number which is stored in a variable.
i am using sed '1,$getlinenumberd' > file1.txt which is... (2 Replies)
Hi,
I have written a script that returns the line number of the pattern i want and i stored the line number in a variable.Now i want to delete all the lines in a file above this line number which is stored in a variable.
i am using sed '1,$getlinenumberd' > file1.txt which is not working(wrog... (5 Replies)
hi Gurus,
I need separate a file which is one huge line to multiple lines based on certain number of charactors. for example:
abcdefghi high abaddffdd
I want to separate the line to multiple lines for every 4 charactors.
the result should be
abcd
efgh
i hi
gh a
badd
ffdd
Thanks in... (5 Replies)
Hi,
I have a file like below.
1,2,3,4,5,6,7,8,9I would like to print or copied to a file based of line count in perl
If I gave a condition 1 to 3 then it should iterate over above file and print 1 to 3 and then again 1 to 3 etc.
output should be
1,2,3
4,5,6
7,8,9 (10 Replies)
Discussion started by: Anjan1
10 Replies
LEARN ABOUT PLAN9
grep
GREP(1) General Commands Manual GREP(1)NAME
grep - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines (with newlines excluded) that match the pattern, a regular expression as
defined in regexp(6). Normally, each line matching the pattern is `selected', and each selected line is copied to the standard output.
The options are
-c Print only a count of matching lines.
-h Do not print file name tags (headers) with output lines.
-i Ignore alphabetic case distinctions. The implementation folds into lower case all letters in the pattern and input before interpre-
tation. Matched lines are printed in their original form.
-l (ell) Print the names of files with selected lines; don't print the lines.
-L Print the names of files with no selected lines; the converse of -l.
-n Mark each printed line with its line number counted in its file.
-s Produce no output, but return status.
-v Reverse: print lines that do not match the pattern.
Output lines are tagged by file name when there is more than one input file. (To force this tagging, include /dev/null as a file name
argument.)
Care should be taken when using the shell metacharacters $*[^|()= and newline in pattern; it is safest to enclose the entire expression in
single quotes '...'.
SOURCE
/sys/src/cmd/grep.c
SEE ALSO ed(1), awk(1), sed(1), sam(1), regexp(6)DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)