Hi,
I have a file which has special characters. I can't see them when I "vi" the file. But I am sure there are some special un seen characters. How can I see them?
Please help.
Thx (6 Replies)
Hi,
I have a data like this in a file,
402003279034002000100147626030003300010000000000002000029000000 ær^M^\MÍW^H
I need to replace those special char to some other char like # or $
Is there any ways to do it...
I tried commands tr,sed and many but it was not able to replace because... (1 Reply)
I don't now exactly how I did it, but I created a file named " -C "
cexdi:/home1 $ls -lt
total 1801336
-rw------- 1 cexdi ced-group 922275840 23 mars 10:03 -C
How do I delete this file ?
cexdi:/home1 $rm -C
rm: invalid option -- C
Syntax : rm filename ...
Doesn't work...... (5 Replies)
Environment: Sun UNIX
Language: Bourne Shell
Problem:
I am writing a script that allows user to key in a directory. Example: /root/tmp.
Since the user can key in anything he/she wants, I need to validate to make sure that he/she does not key in anything funny i.e.... (37 Replies)
Hey Everyone,
I'm quite new to unix (hence the 0 posts!) and im trying to write a simple program that outputs what the user types in to the screen, as long as it is a letter.
This part works fine, however, when a "\" is entered doesnt not display anything and moves to the next line. Is... (11 Replies)
I made menu script for users so they can run other script without going in shell just from menu.
But i must control their input.
These are criteria:
Input must have 4 signs
First two signs are always lower case letters
Input shall not have some special signs just letters and numbers
... (1 Reply)
Hello All,
I am facing challenges in order to transfer a file from windows to unix box,the file contains a special character '×' ,now when I am transferring the file from windows to unix that special character converted to something else like 'Ã' ,another thing I have noticed that the hardware is... (1 Reply)
Hi Guys,
We receive some huge files on to Linux server. Source system use FTP mechanism to transfer these files on our server. Occasionally one record is getting corrupted while transfer, some control characters are injecting into the file. How to fix this issue ? please advice ?
Sample... (2 Replies)
Hi All, I am a newbie to Shell scripting. I have a requirement to Delimit the file fields of a Input file having special characters and spaces with ";".
Input File
----------------------------------
Server Port
----------------------------------
Local ... (5 Replies)
I am trying to rename files with spaces and other characters and not able to be successful.
FileNames:
UPLOAD REFERENCE.xls
UPLOAD MASS REFERENCE.XLS
find /UPLOAD REFERENCE/ -depth -type f -name "* *" -exec rename " " "_" "{}" ";"
The above one is successful to replace spaces... (1 Reply)
Discussion started by: eskay
1 Replies
LEARN ABOUT CENTOS
stapdyn
STAPDYN(8) System Manager's Manual STAPDYN(8)NAME
stapdyn - systemtap dyninst runtime
SYNOPSIS
stapdyn [ OPTIONS ] MODULE [ MODULE-OPTIONS ]
DESCRIPTION
The stapdyn program is the dyninst back-end of the Systemtap tool. It expects a shared library produced by the front-end stap tool, when
run with --dyninst.
Splitting the systemtap tool into a front-end and a back-end allows a user to compile a systemtap script on a development machine that has
the debugging information (need to compile the script) and then transfer the resulting shared objevct to a production machine that doesn't
have any development tools or debugging information installed.
Please refer to stappaths(7) for the version number, or run rpm -q systemtap (fedora/red hat) apt-get -v systemtap (ubuntu)
OPTIONS
The stapdyn program supports the following options. Any other option prints a list of supported options.
-v Verbose mode.
-V Print version number and exit.
-w Suppress warnings from the script.
-c CMD Command CMD will be run and the stapdyn program will exit when CMD does. The '_stp_target' variable will contain the pid for CMD.
-x PID The '_stp_target' variable will be set to PID.
-o FILE
Send output to FILE. If the module uses bulk mode, the output will be in percpu files FILE_x(FILE_cpux in background and bulk mode)
where 'x' is the cpu number. This supports strftime(3) formats for FILE.
-C WHEN
Control coloring of error messages. WHEN must be either "never", "always", or "auto" (i.e. enable only if at a terminal). If the op-
tion is missing, then "auto" is assumed. Colors can be modified using the SYSTEMTAP_COLORS environment variable. See the stap(1)
manual page for more information on syntax and behaviour.
var1=val
Sets the value of global variable var1 to val. Global variables contained within a script are treated as options and can be set from
the stapdyn command line.
ARGUMENTS
MODULE is either a module path or a module name. If it is a module name, the module will be looked for in the following directory (where
'VERSION' is the output of "uname -r"):
/lib/modules/VERSION/systemtap
$ stap --dyninst -p4 -m mod1 -e 'global var1="foo"; probe begin{printf("%s
", var1); exit()}'
Running this with an additional module argument:
$ stapdyn mod1.so var1="HelloWorld"
HelloWorld
Spaces and exclamation marks currently cannot be passed into global variables this way.
EXAMPLES
See the stapex(3stap) manual page for a collection of sample scripts.
Here is a very basic example of how to use stapdyn. First, use stap to compile a script. The stap program will report the pathname to the
resulting module.
$ stap --dyninst -p4 -e 'probe begin { printf("Hello World!
"); exit() }'
/home/user/.systemtap/cache/85/stap_8553d83f78c_265.so
Run stapdyn with the pathname to the module as an argument.
$ stapdyn /home/user/.systemtap/cache/85/stap_8553d83f78c_265.so
Hello World!
SAFETY AND SECURITY
Systemtap, in DynInst mode, is a developer tool, and runs completely unprivileged. The Linux kernel will only permit one's own processes
to be accessed, which is enforced by the ptrace(2) system call. See the stap(1) manual page for additional information on safety and secu-
rity.
SEE ALSO stap(1), stapprobes(3stap), stap-server(8), staprun(8), stapex(3stap)BUGS
Use the Bugzilla link of the project web page or our mailing list. http://sourceware.org/systemtap/, <systemtap@sourceware.org>.
STAPDYN(8)