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Dear all,

I have the following question. Let's say that I have the following script

#!/bin/bash
value=0.4987865
a=` printf "%6.2f" $value `
b=`echo $value + $value | bc -l`
echo $a
echo...

Great!, it works, thanks a lot

J

Hi all,

I have the following question. Apparently not very difficult, but I'm not any expert.
I have a program, let's say program.x, and a bash script that execute it, let's say program.sh....

Thanks for the reply, but actually n0 can take any value, it is not 7.00 necessarily. I've solved it concatenating a second cut command which defines another delimiter " ":

> n0=` grep "n0" $bsim...

I have a file where a line has the following form:

n0=7.00 !Central density [10**19 m-3]

and I want to extract the value 7.00. I used to do this with the order below, which finds the...

Right, I had not realized!. Thanks

I wanted to store a value read from a file in a variable with a given format. I was doing the first step as follows :

it0="$(cat ./myfile)"

I thought the second step would work as: it0= `...

Thanks!. I was transfering the content to a tempfile. With -i option perfect. Thanks again

Great!. It works. But, how can I do to avoid screen output?

I wanted to replace a line from a file, the 8th for example, independently of what it's written in a line. Thanks

Thanks a lot Jean-Pierre. Much better!

well, I found out it is just

if [ "$1" = "" ]
then
echo 'esto es 2'
fi

I have a script (multirun.sh) which launches the program bsim_em.x or bsim_es.x depending on the value entered from the screen:

> multirun.sh 1 (executes bsim_em.x)
> multirun.sh 2 (executes...

Yes that is. With

for line in $(ls); do head -1 $line >> myfile; done

worked as well if I had the files, whose first lines I want to put together, in the same directory, but it is not like...

It works!, thanks a lot

Hi, I have the following problem. I have files with one column of data (let's say file1.dat, file2.dat...file6.dat), and I would like to record the first value of the column of each file into another...

Thanks a lot! the second way works perfectly!!

Hi,

I was trying to define a variable as a result of an operation,

b=` echo $a+1 | bc -l`

with a specific format (5 digits integer completing with zeros, 00025, for example)

c=` printf...

Got it!, I had not understood the delimiters politics properly,

var=` grep "Total Transmission pow." file.dat | cut -d "." -f2,3`

thanks again!

Thanks for the answer, I've tested the first one and it works, thanks a lot, but for the real case I'm working with does not (the first message file composition was an example that I thought was...

I have a file that contains the something like this

a=15
b=21.5
c=544
and so on

the question is how could I find the line that contains the value of c and store its value on a variable in...

thanks:
printf "%06d\n"
can it be done with echo as well?

I would like to change the format of an integer type number adding zeros to the left of it in a script in bash. For example

number=1
echo $number

00001

Thanks