|
|
Sponsored Content
Top Forums
Shell Programming and Scripting
Simple awk problem II
Post 302564384 by max_hammer on Thursday 13th of October 2011 01:46:57 PM
10-13-2011
|
|
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi there,
I was trying to add a line of text in the middle line of a file.
I have counted the lines in the file, and then I divide it into 2, after that I am stuck on how am I suppose to append the line on that file? When I tried to use this command 'second line >> filename' it appends it at... (3 Replies)
Discussion started by: felixwhoals
3 Replies
2. Shell Programming and Scripting
Hi all,
I have set up a simple awk script to calculate the average of values that are printed out a number of times per second (the number of time the printing occurs varies). The data is of the format shown below:
1 4.43
1 3.65
1 2.45
2 7.65
2 8.23
2 5.65
3 4.65
3 6.21
.. ..
120... (4 Replies)
Discussion started by: omnomtac
4 Replies
3. Shell Programming and Scripting
Hi
New to shell script and awk and need assistance on this problem. I need to use a variable to substitute a string in an external file and write the changed info to another file.
At first I did not know if you could use a variable as the sub value but the following showed me that I can.
... (3 Replies)
Discussion started by: hukcjv
3 Replies
4. Shell Programming and Scripting
pcn linus> ntpq -p
remote refid st t when poll reach delay offset disp
==============================================================================
+smpnn01 ntpsrv1 2 u 829 1024 377 1.46 0.793 0.85
*smpnn02 ntpsrv1 2 u ... (2 Replies)
Discussion started by: arch12
2 Replies
5. Shell Programming and Scripting
Hi, I have a very simple script like below:
for n in 10 20 30
do
for a in 30 40 50 60 70 80
do
for r in 2 3 4 5 6 7
do
m=$((r*a))
count=1
while
do
echo "a = " $a ", m = " $m ", n = " $n
... (2 Replies)
Discussion started by: Dark2Bright
2 Replies
6. Shell Programming and Scripting
Hello;
I have the following log file:
10/11/11 10:42:02 LOCK Q Userid:284 Username=root UserPID:23158 Device:marlin batch
10/11/11 10:42:02 TableNr:226 TableName:iatkn RecId:116290398 Flags:X Q H
10/11/11 10:42:02 LOCK CONTENTION X
10/11/11 10:42:02 ... (3 Replies)
Discussion started by: delphys
3 Replies
7. Shell Programming and Scripting
Hello;
I need to print two previous lines after searching for a reg exp:
awk '/haywood/'
should produce the following
===================
p9J46THe020804 89922 Tue Oct 18 21:06 MAILER-DAEMON
(host map: lookup (haywood.com): deferred)
... (1 Reply)
Discussion started by: delphys
1 Replies
8. Shell Programming and Scripting
Hello folks
I have the following output
UNIX95=1 ps -ef -o pcpu,user,pid,args |more
%CPU USER PID COMMAND
0.03 root 0 swapper
0.08 root 1 init
0.00 root 13 net_str_cached
0.00 root 12 usbhubd
0.00 root 11 escsid
0.00 root 10... (3 Replies)
Discussion started by: delphys
3 Replies
9. Shell Programming and Scripting
Hi there, Im sure there is a simple explanation for this but I have a file like this with no balnk lines
peter
paul
john
I run the command
# var=`grep paul file.txt`
# echo $var
paul
# echo $var | wc -l
1
but when I grep for a value that isnt in the file, i still... (4 Replies)
Discussion started by: rethink
4 Replies
10. Shell Programming and Scripting
Hello;
we have :
awk '/reg_exp/,0/
prints every line after the first occurrence of "reg_exp"
But if I want to print rest of the lines AFTER the last occurrence of "reg_exp",
how would I do it ??
Tried :
awk ' ! (/reg_exp/,0)'
But it errored...
Thank you for any... (5 Replies)
Discussion started by: delphys
5 Replies
LEARN ABOUT DEBIAN
ppmtopgm
ppmtopgm(1) General Commands Manual ppmtopgm(1) NAME
ppmtopgm - convert a portable pixmap into a portable graymap SYNOPSIS
ppmtopgm [ppmfile] DESCRIPTION
Reads a portable pixmap as input. Produces a portable graymap as output. The output is a "black and white" rendering of the original image, as in a black and white photograph. The quantization formula used is .299 r + .587 g + .114 b. Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any ppm program can read pgm (and pbm ) files automatically. pgmtoppm is for colorizing a pgm file. Also, see ppmtorgb3 for a different way of converting color to gray. And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate the original colors, not necessarily a way that looks like a black and white photograph. QUOTE
Cold-hearted orb that rules the night Removes the colors from our sight Red is gray, and yellow white But we decide which is right And which is a quantization error. SEE ALSO
pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5) AUTHOR
Copyright (C) 1989 by Jef Poskanzer. 10 April 2000 ppmtopgm(1)