03-27-2008
Google for "shell differences and how to change your shell".
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello,
I have a file called Delete and within the delete file I have the following statement:
delete from employee where employee_id = " "
how do I write a script that read from this file and replace:
employee_id = " " with employee_id is null
Please assist...greatly... (3 Replies)
Discussion started by: kenix
3 Replies
2. UNIX for Advanced & Expert Users
I have came across the definitions of these shells korn bourne c etc .. but honestly till now i din't get the exact difference between these threes , the advantages ..... can anyone pinpoint me where it actually lies ..... don;t include me answers like aliasing in c is posible and not in bourne ..... (3 Replies)
Discussion started by: dino_leix
3 Replies
3. Solaris
HIIIIIIIIIIIII
i have quistion now i have completed the course SUN(9) , now i dont know if i can work with HP-UX or not as well as UNIX OS , i mean i can admin the machine work with HP-UX or not what the difference in command i tere but its huge differents... also after SUN(9) i can... (1 Reply)
Discussion started by: omer_ome
1 Replies
4. UNIX for Dummies Questions & Answers
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)
Discussion started by: XZOR
2 Replies
5. UNIX for Advanced & Expert Users
Can you pls. tell me, why we have different shells in UNIX OS ( Eg. SunOs) and also I would like to know what is the specific difference b/w SVR and BSD ?
Thanks. (2 Replies)
Discussion started by: shahnazurs
2 Replies
6. Shell Programming and Scripting
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)
Discussion started by: madmat
3 Replies
7. Shell Programming and Scripting
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)
Discussion started by: bobby1015
6 Replies
8. Shell Programming and Scripting
ple tell me What is the diff between ksh,sh,bash and csh (1 Reply)
Discussion started by: Boby120677
1 Replies
9. UNIX for Dummies Questions & Answers
Lets say my default shell is bash and then i load up csh and then ksh. How would i exit csh without exiting ksh?
so basically i gone from bash > csh > ksh and i wish to close csh (2 Replies)
Discussion started by: Bill Thompson
2 Replies
10. UNIX for Dummies Questions & Answers
I mean like this: http://shells.red-pill.eu/
Can anyone explain how this works? I hope my post is not spam. I think its related to linux. Thank you (1 Reply)
Discussion started by: postcd
1 Replies
true(1) General Commands Manual true(1)
NAME
true, false - Returns a standard exit value
SYNOPSIS
true
false
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
true: XCU5.0
false: XCU5.0
Refer to the standards(5) reference page for more information about industry standards and associated tags.
DESCRIPTION
The true command returns a 0 (zero) exit value. The false command returns a nonzero exit value. These commands are usually used in input to
shell commands.
NOTES
The special built-in utility : (colon) is sometimes more efficient than the true command.
EXIT STATUS
[Tru64 UNIX] The nonzero value returned by the false command may vary from system to system.
EXAMPLES
To construct a loop in a shell procedure, enter: while true do date sleep 60 done
This procedure displays the date and time once a minute. To stop it, press the Interrupt key sequence.
SEE ALSO
Commands: csh(1), ksh(1), Bourne Shell sh(1b), POSIX shell sh(1p)
Standards: standards(5)
true(1)