What i am doing is , i tail a file from certain chatacter and then cat -n to get the line numbers.I search for a particular string and gets it line number. What i am interested in is the next line immediately after the pattern i search.
But grep gives me result for all line statring with those digits.
For Ex:
I got the pattern in line as:
10 Pattern i searched.
Now, I need contents of line 11(i store in variable say $next_line).
so i do :
Code:
tail -c [number] | grep "^[[:space:]]* $next_line
But it gives me result for the lines like 11, 111, 110 and so on .
Is there a way to only search for the exact number in grep.
Moderator's Comments:
Use code tags please, ty.
Last edited by kailash19; 07-28-2010 at 09:41 AM..
I want to grep from a file an exact character match.
I tried grep -c "$a $b" $file
where a=6 and b=2
the problem is that I get: 6 2 and 6 20
I just need a count of the occurrence.
I'm using the Bourne shell.
I've also tried grep -c '$a $b' $file;
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hi guys,
I want to do pattern matching with awk or sed but I don't know how. here's what I want:
I have a line number for a pattern that I have already found using grep, and I know a pattern like "---" that happens a few lines above that certain line number. I want to print out the chunk... (1 Reply)
hi
i have a file , that contains data like
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Hi there
does anybody know how i can get the line number from an entry or entries in a file ?? for example if i had a file
test1
test2
test3
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Hi All,
My file looks some thing like this,
File 1: -
A 10
B 30
C 5
D 25
E 72
F 23
now my requirement is to find the line with highest number in it, i;e the result should be
E 72
Thanks in Advance (1 Reply)
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Dear all,
I want to find a number in exact column but I don't know how to do it.
Here is the thing, data is shown below, and I want to find 416 in the first column and print it out, how should I deal with it? Thank you very much!
ab33 50S01S 958 279.068999 67.251013 -150.172544 67.250000... (5 Replies)
Discussion started by: handsonzhao
5 Replies
LEARN ABOUT DEBIAN
vm
VM(1) mgetty VM(1)NAME
vm - VoiceModem is the program for handling the voice modem functionality from shell scripts
ACTIONS
beep options [<frequency [<length in 0.001sec>]]>
diagnostics options device name (e.g. ttyS2
dial options phone number
help
play options [<file names]+>
record options file name
shell options [<shell script [shell options]]>
wait options [<time in seconds]>
devicetest
OPTIONS -c n use compression type n
-d n set i/o device
-t, -m, -i, -e, -s, -H equals to -d <2,3,4,5,6,7>
-l s set device string (e.g. -l ttyS2:ttyC0)
-v verbose output
-w use off / on hook signal from local handset to start and stop recording
-x n set debug level
-L n set maximum recording length in sec
-P print first DTMF tone on stdout and exit
-R read and print DTMF string on stdout and exit
-S s set default shell for shell scripts (e.g. -S /bin/sh)
-T n set silence timeout in 0.1sec
-V n set silence threshold to <n> (0-100%%)
SEE ALSO vgetty(1)POD ERRORS
Hey! The above document had some coding errors, which are explained below:
Around line 30:
You forgot a '=back' before '=head1'
Around line 32:
'=item' outside of any '=over'
Around line 71:
You forgot a '=back' before '=head1'
perl v5.10.1 2010-04-04 VM(1)
07-28-2010
