Your request is not that easy to fulfill as the file structure (time stamp \n line) is not consistenely followed, so further evaluations need to be applied. For a start, try
Hi,
I have a text file contaning around 150 lines, each line is a hostname.
I want to read 4 lines/hostnames and save those 4 lines to a seperate file.
say the big file is /files/bigfile and I want to have a lot of files in /files named
/files/smallfile.1 , /files/smallfile.2 and so on...
... (1 Reply)
All, I have a file that I want to read, cut 12 lines and direct into a new file, and continue to do this until I reach the EOF. How do I do it?
can I use cat or read to do this?
the file is formated with repetitive output consisting of these 12 lines
date: <Timestamp>
dev_id: <device ID>... (7 Replies)
Hi,
My records are like this
BSC403_JAIN03|3153_TropicalFarm_LIMJM1-3_97|
BSC403_JAIN03|3410_PantaiAceh_PCEHM1_4_97|
BSC406_BMIN02|1433_JomHebohTV3_COW7M1_11_97|
I want to extract the value before _97|
This command
BSC_ID=`echo $DATA | cut -f5 -d"_"`
gives me
_97|, 4, 11
and by... (16 Replies)
Hi,
How to cut all lines in file before keyword?
from
1 2333214 word ...... some text
2 234343 234234 word ...... some text
3 234324 324 3234 word ...... some text
to
1 2333214
2 234343 234234
3 234324 324 3234 (4 Replies)
Hi,
sorry for newbie question :confused:
can't find how to cut ?
from
1000 2000 word some text1....
100 200 300 word some text2....
10 20 30 abc word some text3....
to
some text1....
some text2....
some text3.... (7 Replies)
Hi Everyone,
I have a file a.txt, inside is
Mon Jul 20 00:05:07 2009 12
Mon Jul 20 00:05:08 2009 1
The output should be a.txt, inside is
00:05:07 12
00:05:08 1
My method is
`cat a.txt | cut -f4,6 -d' ' > a.txt.tmp;mv -rf a.txt.tmp a.txt`;
Is any good way to do this? like perl... (5 Replies)
Hi guys,
I need to cut the first 12 system processes from the command ps -A. I know that the cut command forms part of the pipeline but can't understand how to cut the first 12 lines and later display them on standard output. Please help!
Many thanks, Jared. (3 Replies)
Hi,
I have a SQL script with "create table" and "alter table" statements and I want to cut all the alter table statements from original file (A) and move it to a different file (B).
Can you please me the option. Thanks a lot for your time. (3 Replies)
i am having a text file like below
rama
surya
pandu
latha
singh
raja
i want to get the new file from 3 to 5
i.e
pandu
latha
singh
please help (1 Reply)
Discussion started by: suryanarayana
1 Replies
LEARN ABOUT DEBIAN
plan9-grep
GREP(1) General Commands Manual GREP(1)NAME
grep, g - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
g [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines that match the pattern, a regular expression as defined in regexp(7) with
the addition of a newline character as an alternative (substitute for |) with lowest precedence. 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.
-e The following argument is taken as a pattern. This option makes it easy to specify patterns that might confuse argument parsing,
such as -n.
-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.
-f The pattern argument is the name of a file containing regular expressions one per line.
-b Don't buffer the output: write each output line as soon as it is discovered.
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 '...'. An expression starting with '*' will treat the rest of the expression as literal characters.
G invokes grep with -n and forces tagging of output lines by file name. If no files are listed, it searches all files matching
*.C *.b *.c *.h *.m *.cc *.java *.cgi *.pl *.py *.tex *.ms
SOURCE
/src/cmd/grep
/bin/g
SEE ALSO ed(1), awk(1), sed(1), sam(1), regexp(7)DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)