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Thanx all of you for helpful information.

And I have another question,

If I would like for ex. copy all files with for ex. read, write and execute permissions, I guess I can use some think...

something like that

ex:

file1 -> filea
or
file1 -> newfile1

file21 -> file2a
or
file21 -> newfile21

file11 -> fileaa
or
file11 -> newfile11

Hi,

I have many files ex: file1, file2 ...file100, and I would like to rename only files with "1" in name. I don't have experience with bash and other shells. I know I can use "for i in" and "if",...

zsh version:
4.3.10ksh version
Version JM 93t+ 2009-05-01ksh
100000 loops
1.8 secksh
500000 loops
9.4 sec

Sorry for my ignorance,
and thanx for informations.

BTW.
% which echo
echo: shell built-in command
% type -a echo
echo is a shell builtin
echo is /bin/echo

When I type which echoit is /usr/bin/echo
Can I choose which echo would be executing ?

And why in different shells everything is OK ?

HI,
I would like to ask You about some good books or links where I can find information about shells, theoretical information.
I will be grateful if You can help me

And I have question about...

let not found ;/

i=`expr $i + 1`ok thx is't working

And what aboute for in sh if my shell doesn't support seq and I need ex 1000 repetition

grep yourusername /etc/passwd:
w29185:x:4496:203:MyName:/export/home/w29185:/bin/bashI tried:
#!/bin/sh

for i in `seq 1 500000`; do
echo $i
done... and seq: not found

Hi,
I have a problem with "for" and "while" loop in "sh".
I have:
#!/bin/sh

for i in $(seq 1 500000); do
echo $i
doneand it's working in sh on my ubuntu, but when I try to run this on...

Hi,
I'am using "time" to check execution time of some script. Is there any possibility to save time command result into a file ?

Hi,
Do you konw how should Ackermann function look in bash or sh, or any diffrent shell laguage ??
I know this function i c++ but I don't know enough shell language

Thanks for any help

Thank you for that information.
Sorry but english isn't my native language and I have problem to understand this part "number of builtins", what do you mean "builtins".

Cheers.

Yes, I know, it's just for test

Yeah, I was thinking about some thing like that, maybe something more sophisticated :), but not too much ;)

Hi,

I need some simple but time-consuming script, I would like to compare run time in different shells. I thought about factorial or exponentiation in many loop, but I don't know it's a good...

Oops ... It's so embarrassing :o
... but thanks for perceptiveness :)

HI,
Is there any possibility to change names of many files using "mv" and "for" loop ???

For ex. I have many txt files.
file1.txt
file2.txt
...
And I tried something like this, but it's not...

Thank you scottn and thank all of you for helpfull information :)

Hi all,

I have a problem with "for" and "while" in different shells.
I know "for" and "while" in bash and sh, but I can't find "for" in "csh"

Here are simple loops in bash and sh

BASH
...