Thanks hfreyer. I don't think I described the problem very well. Basically my insertdiscs script calls the vimport binary in a loop which is always running in a terminal. vimport is an interactive program that prompts to insert magnetic optical disks in a jukebox one at a time (enter slot number or hit enter at prompts for next available jukebox slot). The screen output for vimport has information that I need to also capture to a file (egrep Imported\|INFO). So in order to still see the interactive text from vimport to load disks and also capture parts of the output to file for processing I can start the script with:
Except now I have to hit enter an extra time to get back to the beginning of the loop running vimport. Piping to tee adds the need for an extra enter key press. So I was hoping to somehow automatically add one enter key press or for some other solution. Otherwise the script always looks like it has hung when in fact it is ready to insert the next disk (after hitting enter an extra time to see the "please insert disk" prompt again).
Piping from print "\n" or (sleep 1; print "\n") sends too many newlines, I was hoping for some way to just send one if possible. Unfortunately the system is an old Sun box running Sun 5.8 so no expect.
Hello,
I'm trying to create a shell variable with newlines inside it, so that when I echo the variable and pipe it to, say, awk, it output with the newlines. Why is this so problematic? I frankly don't know, but BASH seems to be stripping my variable of newlines. Here's an example
$ cat... (5 Replies)
Hi Guys,
I have data in a file as follows:
a 1 2 3
b 4 5 6
a 6 7 8
a 4 7 9
b 6 8 5
c 0 8 7
So the number of rows which have data is variable (2 for the first group, one for the second group and three for the third group), but the delimiters between the... (10 Replies)
Hello, there. I have a file that's a horrible, horrible mess. (Basically, it's an export from a firewall config.) The people who generated the file didn't think that putting a newline in the middle of a hostname would ever be a problem. It is.
Here's an example of the stuff in the file:
... (2 Replies)
I have a file that has lines that are deliminated with '^A', but some of the lines go for a few lines and I need those lines to be appended into one line.
All of the lines start with 'low debug' and end with ' " 0 '.
How can I read each line from start to finish without some of the data... (7 Replies)
Hello! This is my first post here.
I have a file with text like:
A</title>
B
C</title>
D
I need to format it to:
AB
CD
I am trying to use sed: sed 's/<//title>\n/ /g' file > newfile
to delete </title> and the newline character, but the file is unchanged because there are... (3 Replies)
Good afternoon,
I am trying to read user input.
Here is what I have so far:
echo "Type the Container ID for every container that you want subnets exported"
echo "for (with comma between each one, for example... 1,45,98)"
echo -n "if you want every one listed, then just type ALL in caps... (2 Replies)
Hi buddy's
my file are like this:
s.no,name,band,sal
1,"suneel",,10
2,"bargav
sand",,20
30,"
ebdug gil",,4
but i want
s.no,name,band,sal
1,"suneel",,10
2,"bargav sand",,20
30,"ebdug gil",,4
any command or Shell script for this.
please help me it's urgent to implement (33 Replies)
Hi All -
I am in need of some help in formating the below file
Requirement -
1) replace newlines with space
2) replace '#~# ' with newline
-----------------------
sample inputfile a
I|abc|abc|aaa#~#
I|sddddd|tya|dfg
sfd
ssss#~#
I|tya1|tya2|dfg|sfd|aaa#~#... (5 Replies)
I'm on Ubuntu 14.04 and I manually updated my coreutils so that "tee" is now on version 8.27
I was running a script using bash where there is some write to pipe error at some point causing the tee command to exit abruptly while the script continues to run. The newer version of tee seems to prevent... (2 Replies)
Hi Friends,
I have a data file with new lines.
How to remove the newlines and should be showed in one line.
I tried using the command
tr -d '\n' filename
sed 's/\n//g' file name
Ex: 1 abc hyd is actual record
but in our scenario showing it as
1 abc
hydthis record should be like... (5 Replies)
Discussion started by: victory
5 Replies
LEARN ABOUT MOJAVE
textdump
TEXTDUMP(4) BSD Kernel Interfaces Manual TEXTDUMP(4)NAME
textdump -- textdump kernel dumping facility
SYNOPSIS
options KDB
options DDB
DESCRIPTION
The textdump facility allows the capture of kernel debugging information to disk in a human-readable rather than the machine-readable form
normally used with kernel memory dumps and minidumps. This representation, while less complete in that it does not capture full kernel
state, can provide debugging information in a more compact, portable, and persistent form than a traditional dump. By combining textdump
with other ddb(4) facilities, such as scripting and output capture, detailed bug information can be captured in a fully automated manner.
FORMAT
textdump data is stored in a dump partition in the same style as a regular memory dump, and will be automatically extracted by savecore(8) if
present on boot.
textdump files are stored in the tar(5) format, and consist of one or more text files, each storing a particular type of debugging output.
The following parts may be present:
ddb.txt Captured ddb(4) output, if the capture facility has been used. May be disabled by clearing the debug.ddb.textdump.do_ddb
sysctl.
config.txt Kernel configuration, if has been compiled into the kernel. May be disabled by clearing the debug.ddb.textdump.do_config
sysctl.
msgbuf.txt Kernel message buffer, including recent console output if the capture facility has been used. May be disabled by clearing the
debug.ddb.textdump.do_msgbuf sysctl.
panic.txt Kernel panic string, if the kernel panicked before the dump was generated. May be disabled by clearing the
debug.ddb.textdump.do_panic sysctl.
version.txt Kernel version string. My be disabled by clearing the debug.ddb.textdump.do_version sysctl.
Kernel textdumps may be extracted using tar(1).
CONFIGURATION
The textdump facility is enabled as part of the kernel debugger using options KDB and options DDB. By default, kernel dumps generated on
panic or via explicit requests for a dump will be regular memory dumps; however, by using the textdump set command in ddb(4), or by setting
the debug.ddb.textdump.pending sysctl to 1 using sysctl(8), it is possible to request that the next dump be a textdump.
If at the ddb(4) command line, the commands textdump set, textdump status, and textdump unset may be used to set, query, and clear the
textdump pending flag.
As with regular kernel dumps, a dump partition must be automatically or manually configured using dumpon(8).
EXAMPLES
In the following example, the script kdb.enter.panic will run when the kernel debugger is entered as a result of a panic, enable output cap-
ture, dump several useful pieces of debugging information, and then invoke panic in order to force a kernel dump to be written out followed
by a reboot:
script kdb.enter.panic=textdump set; capture on; show allpcpu; bt;
ps; alltrace; show alllock; call doadump; reset
In the following example, the script kdb.enter.witness will run when the kernel debugger is entered as a result of a witness violation,
printing lock-related information for the user:
script kdb.enter.witness=show locks
These scripts may also be configured using the ddb(8) utility.
SEE ALSO tar(1), ddb(4), tar(5), ddb(8), dumpon(8), savecore(8), sysctl(8)HISTORY
The textdump facility first appeared in FreeBSD 7.1.
AUTHORS
The textdump facility was created by Robert N. M. Watson.
BSD December 24, 2008 BSD