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Hi, All,

I wonder how to change the field separator of grep from : to space when use grep to display.

for example when I use

grep -e 'pattern1' -e 'pattern2' -n filename

to find...

Hi, All,

I want to calculate a specific value of a Gaussian distribution, say the mean is a=3, variance is b=5, the indepentent variable is x=2, how could I get the y which is the Gaussian...

sorry, I think there is misunderstanding. for the original file

"TEST/DR1/FELC0/SI1386.rec"
0 1513 !ENTER 1513
1513 2994 q 1481
2994 4440 iy 1446
4440 5080 v 640
5080 6266 ih 1186
6266 7436...

what I got is
"TEST/DR1/FELC0/SI1386.rec" 0
0 1513 !ENTER 1513
1513 2994 q 1481
2994 4440 iy 1446
4440 5080 v 640
5080 6266 ih 1186
6266 7436 n 1170
7436 10360 eh 2924
10360 12338 !EXIT...

Thanks for your help.

It works for this example, but when I change the threshold from 500 to 200, it does not work.

Hi, All,

I have a file, it looks like:

"TEST/DR1/FELC0/SI1386.rec"
0 1513 !ENTER 1513
1513 2994 q 1481
2994 4440 iy 1446
4440 5080 v 640
5080 6266 ih 1186
6266 7436 n 1170
7436 10360...

There is a file:

!EN
ih
n
w
ey


I want to join the current instance with its previous instance together, such as: previous_instance-B+current_instance, there "-B+" is fixed iterm,...

Thanks, era.

Do you think you can recommend me some book or websit? I would like to learn more about script. I alwasy encounter some problems, and could not figure out by myself.

Thanks, it works.

I wonder how to use awk to do this.

Could anybody tell me how I can use sed to modify lines following specific lines? the file is as following:

"TEST/SI1573.lab"
3670 8920 h#
8920 9530 hh
9530 10694 ih
....

Hi, All,

I have a file, its content is as follows:

100 150
120 135
140 170

I want to insert a column, its content is determined by the difference between the two values in the same...

Yeah, it works, thanks.

Hi, all,

I wonder if I can use sed to insert a string which has a colon.

I have a txt file a.txt like the following

TRAIN/DR1/FCJF0/SI1027.MFC
TRAIN/DR1/FCJF0/SI1657.MFC

I want to...

Thanks, era.

I find a way to fix it. Save it in UltraEdit from dos to unix style.

Thank you for your help. I was too pessimistic.

Thanks for your replies.

Yes, I do use a winXP os. Maybe I need to run it on real unix system. It seems like there is no a easy way to run it on windows.

Hi, all,

I try to run a quite simple bash script mytest.sh in cygwin, it's content is:

#!/bin/bash

echo "It is my first bash shell"

there are three...