Small script for primes (SOLVED)
 

Hi to all
I made small sh script for searching primes inside RES file

echo "**** PRIMES FOUND ****"
echo " "
grep -h 'is prime!' /pepi/p*/lresu0000.txt | cut -d! -f1
echo " "
and if I in lresu0000.txt have output as

92*10^5573-1 is prime! (5575 decimal digits, P = 4) Time : 413.977 ms.

as result I got

92*10^5573-1 is prime

but I wont to get

92*10^5573-1 is prime[SIZE=3][COLOR=Red][B]![/B][/COLOR][/SIZE] ( yes I wont ! mark)

So where is problem
If I use cut -d( - got syntax error ( [COLOR=Red]([/COLOR] is not expected)
What I write wrong?

Thanks

You could easily add it back with sed:

grep -h 'is prime!' /pepi/p*/lresu0000.txt | cut -d! -f1 | sed 's/$/!/'

Put the ( in quotes. It's a special shell character, so sh isn't interpreting it as a simple argument to cut. Quoting it tells the shell you just want a literal (

grep -h 'is prime!' /pepi/p*/lresu0000.txt | cut -d! -f1 | sed 's/$/!/'
Put the ( in quotes. It's a special shell character, so sh isn't interpreting it as a simple argument to cut. Quoting it tells the shell you just want a literal (
Both works perfect!


WOW
so many answers in two minutes
Thanks to all!

[CODE]cut -d\ -f1,3[/CODE]

There are 2 spaces after the "\" :smile:

[QUOTE=paulunderwood;400755][CODE]cut -d\ -f1,3[/CODE]There are 2 spaces after the "\" :smile:[/QUOTE]
Sharp eyes! :bow::bow::bow:

I will write in this topic ( to make forum clean)
I have four dir named p1 p2 p3 p4
Inside every dir is file called lresults.txt
I wont to make small sh script to copy content of all lresults.txt in one big file called results.txt outside those dir and after that deleting all lresults.txt inside all dir..

[QUOTE=pepi37;402339]I will write in this topic ( to make forum clean)
I have four dir named p1 p2 p3 p4
Inside every dir is file called lresults.txt
I wont to make small sh script to copy content of all lresults.txt in one big file called results.txt outside those dir and after that deleting all lresults.txt inside all dir..[/QUOTE]

Try:
[code]
cat p*/lresults.txt > results.txt
rm p*/lresults.txt
[/code]

Note: If you have any other p* directories with lresults.txt in them, they will also be included in the operation.

EDH, works perfect!
Thanks!

And if I wont to delete content of lresults.txt but not lresults.txt itself, what to change?

found solution

for fname in /pepi/p*/lresults.txt
do
> $fname
done :)

[QUOTE=EdH;402340]Try:
[code]
cat p*/lresults.txt > results.txt
rm p*/lresults.txt
[/code]Note: If you have any other p* directories with lresults.txt in them, they will also be included in the operation.[/QUOTE]
A safer approach is:

[CODE]cat p*/lresults.txt > results.txt && rm p*/lresults.txt[/CODE]This code only runs the "second line" if the "first line" is successful.

A simple example that illustrates this concept:

[CODE]$ whoami
m

$ cd /

$ touch a && ls
touch: cannot touch ‘a’: Permission denied

touch a; ls
touch: cannot touch ‘a’: Permission denied
bin boot dev etc home initrd.img lib lib64 lost+found media mnt opt proc root run sbin srv sys tmp usr var vmlinuz[/CODE]The first command verifies that we are not root. The third command is conditional and the fourth command runs everything.

[QUOTE=pepi37;402341]And if I wont to delete content of lresults.txt but not lresults.txt itself, what to change?[/QUOTE][CODE]cat /dev/null > p*/lresults.txt[/CODE]