Microsoft, since the early days of DOS, uses the two bytes carriage-return/linefeed as end-of-line terminators (and ^Z instead of ^D for EOF). So this isn't a Windows 7 specialty. But when copy-and-pasting lines, the command prompt isn't sent that 2 byte sequence, but an emulation of the enter key, where it's up to the program to handle that correctly. Cygwin comes with both vim and emacs (and a multitude of other editors) that let you save files in UNIX format.
You can leave out the shebang line if you really only use the bash shell. But expect your script to fail as soon as someone tries to run it in another shell (ksh/csh/ash/dash/...). By default, the script is executed using the same shell the user is currently running, but with the shebang line you'll tell the system explicitly which shell to use. This is especially useful if you use different scripting languages:
You can write stand-alone awk programs using
Perl programs will almost guaranteed fail if you run them without stating the interpreter somewhere
The same is true for expect, TCL, Python, Ruby, ....
The standard output for bash (just like any other POSIX shell) is stdout. If that is connected to a terminal, output goes there. If it's connected to a file, likewise. Maybe it's just that your awk statement didn't match, and so didn't print anything.
Hi guys !!
well i'm still new in learning UNIX , and actually i'm still studying it by myself ..
anyway, some people told me the Bourne-again shell is a good version of UNIX to work on , and i tried to download yesterday but i didn't know how to start it ...... the ReadMe file associated with... (3 Replies)
Hi,
I have a script that uses "nohup" command to execute a korn shell script. Which one is the correct shell to use bourne shell or korn shell to execute a korn shell? and why?
Thanks in advanced. (2 Replies)
Hi Guys,
My first post and simple one at that .. Really rusty with this shell scripting..\
I have a script called .. j.sh
I am calling
> j.sh LOG_PATH $BLMBRGDATA/blmbrg.properties
where j.sh is grep $1 $2 | cut -d',' -f2 .
$BLMBRGDATA is set to a directory path.
why do i get :-
$... (3 Replies)
Hi, experts.
Whould anybody clear explay me difference and usage of these 3 commands (particulary in bash) :
exec
eval
source
I've tryed to read the manual pages but did not get much.
Also could not get something useful from Google search - just so much and so not exactly, that is... (3 Replies)
Hi All
I have writing a Korn Shell script to execute it on many of our servers. But some servers don't have Korn Shell installed, they use Borne Shell.
Some operations like calculation don't work :
cat ${file1} | tail -$((${num1}-${num2})) > ${file2}
Is it possible to activate Korn Shell... (3 Replies)
Exercise Five
Write a Bourne shell script which:
• Professionalism: plan for this from the start.
• Has one command line argument.
• If the command line argument is a directory then the script should output the number of
files in the directory.
• If the command line argument is an ordinary... (2 Replies)
Could some one tell me the difference btw Bourne shell and the Kshell? Which is more flexible and reliable in terms of portability and efficiency. When i type the following command ..
$ echo $SHELL
yields me
/bin/sh
Does this tells me that I am in Bourne shell. If yes, how can i get... (6 Replies)
for (( i=1; i<=3; i++ )); do
for (( j=1; j<=3; j++ )); do
for (( k=1; k<=3; k++ )); do
echo $i$j$k
done
done
done
Will the above code work on a BOURNE shell?
As far as my understanding is, if I am writing the above code in a file..say lol.sh and then running it through the terminal using... (7 Replies)
I am still learning shell scripting. Recently I see a function for read configuration. But some of special character make me confused. I checked online to find answer. It was not successful. I post the code here to consult with expert or guru to get better understanding on these special characters... (3 Replies)