|
|
Sponsored Content
Top Forums
Shell Programming and Scripting
ksh: hash (#) at beginning of a line exits the shell
Post 302605180 by rpaskudniak on Tuesday 6th of March 2012 08:52:48 PM
03-06-2012
ksh: hash (#) at beginning of a line exits the shell
This is WILD! 
Under Ubuntu (where I am cross-posting this problem) I have lately noticed by terminal windows/tabs closing unexpectedly. I finally caught it: I was composing a complicated command so I practices it a few times commented out - that is, with a # at the start of the line. What is now happening is as follows:
This appears to be a bizarre setting or option in my history; that the hash activates a history search.
I don't want it! What is it and how do I turn it off?
The version I'm using is "Version JM 93u 2011-02-08".
This does not happen with bash; the first time I have found bash behaving better than ksh. Furthermore, after searching the ksh man page, it occurred to me to set -o emacs and try it. I still get the history search but it does not exit the shell upon confirmed mismatch.
Thanks for diagnosis/advice/help.
__________________
-- Rasputin Paskudniak II (In pursuit of undomesticated, semi-aquatic avians)
Under Ubuntu (where I am cross-posting this problem) I have lately noticed by terminal windows/tabs closing unexpectedly. I finally caught it: I was composing a complicated command so I practices it a few times commented out - that is, with a # at the start of the line. What is now happening is as follows:
- If I start the line with #<white-space> i.e. a space or tab following the #, the shell abruptly exits.
- If I start with the # and a letter, say l, it traces down my history for all old commands that started with l. When I add a letter to that - e.g. s, the list is pared down to all old commands [in my history] that had started with ls. As soon as my typed comment becomes fails to match anything in my history, it exits.
- If there are any command lines in my history that did start with blanks (I've been experimenting) it pops those up, paring the list as I type characters, until it hits something not in my history. Then it exits. This is essentially the same as my point above.
I don't want it! What is it and how do I turn it off?
The version I'm using is "Version JM 93u 2011-02-08".
This does not happen with bash; the first time I have found bash behaving better than ksh. Furthermore, after searching the ksh man page, it occurred to me to set -o emacs and try it. I still get the history search but it does not exit the shell upon confirmed mismatch.
Thanks for diagnosis/advice/help.
__________________
-- Rasputin Paskudniak II (In pursuit of undomesticated, semi-aquatic avians)
|
|
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Could anybody help me.
I need to create a script that reads a text file from STDIN and prints out the file to STDOUT with line numbers at the beginning of each line.
Thanks. (5 Replies)
Discussion started by: mascorro
5 Replies
2. Shell Programming and Scripting
I have a vendor that needs to install a set of scripts (written in korn) that will be run as root through crontab every day. This set of scripts will need to ssh as root to other servers without getting challenged for user name or password. So I have set up ssh key pairing and authorized_keys... (2 Replies)
Discussion started by: StHalcyon
2 Replies
3. Shell Programming and Scripting
Dear,
I have written below code to initiate the log at top of my script.
#Set the log file
LOGFILE=<path>/<filename.log>
exec > $LOGFILE 2>&1
...............
....
...
..
............
echo -e "\n\n Script finished OK " `date "+%m/%d/%y %H:%M:%S" ` "\n\n"
exit 0
the logging ends only... (14 Replies)
Discussion started by: Imran_Chennai
14 Replies
4. Shell Programming and Scripting
Hello - I have a script which creates a NIS user on Solaris machine. Before creating the user I check if the user being created laready exists or not using ypmatch and use $? to get the exit code. If a user exists, I get 0, works fine. However when the user is not found, the shell scripts exits by... (1 Reply)
Discussion started by: manju--
1 Replies
5. Shell Programming and Scripting
hey,
i would like to add a line number to the beginning like so:
red
blue
green
yellow
will be:
1=>red
2=>blue
3=>green
4=>yellowplease advise
thank u. (5 Replies)
Discussion started by: boaz733
5 Replies
6. Shell Programming and Scripting
How can I delete spaces at the begining of all lines of my file ? (2 Replies)
Discussion started by: Sara_84
2 Replies
7. UNIX for Dummies Questions & Answers
How can I specify special meaning characters like ^ or $ inside a regex range. e.g
Suppose I want to search for a string that either starts with '|' character or begins with start-of-line character.
I tried the following but it does not work:
sed 's/\(\)/<do something here>/g' file1
... (3 Replies)
Discussion started by: jawsnnn
3 Replies
8. UNIX for Dummies Questions & Answers
How would you do vim copy line and paste at the beginning, middle, and end of another line. I know yy copies the whole line and p pastes the whole line, but on its own separate line. Sometimes I would like to copy a line to the beginning, middle, or end of another line. I would think this would be... (3 Replies)
Discussion started by: cokedude
3 Replies
9. Shell Programming and Scripting
I need to comment the lines starting with pattern "exclude" or "exclude=". If the work exclude comes at any other part, ignore it. Also, ignore, excludes, excluded etc. Ie only comment the line starting with exclude.
File contents.
exclude
exclude=
hi I am excluded
excludes
excludes=
... (9 Replies)
Discussion started by: anil510
9 Replies
10. Shell Programming and Scripting
Hi
from a script i want to to read a file beginning at line e.g. number 21 to the EOF.
less +n21 temp.txt
Bevor the result, it brings an empty page, so that i cant use for scripting.
Any idea how the problem can be solved?
Thanks in advance!
IMPe (2 Replies)
Discussion started by: IMPe
2 Replies
LEARN ABOUT LINUX
suspend
suspend(1) User Commands suspend(1) NAME
suspend - shell built-in function to halt the current shell SYNOPSIS
sh suspend csh suspend ksh suspend DESCRIPTION
sh Stops the execution of the current shell (but not if it is the login shell). csh Stop the shell in its tracks, much as if it had been sent a stop signal with ^Z. This is most often used to stop shells started by su. ksh Stops the execution of the current shell (but not if it is the login shell). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), kill(1), ksh(1), sh(1), su(1M), attributes(5) SunOS 5.10 15 Apr 1994 suspend(1)