I have a bunch of files (around 900) that have some special characters. Some of the files contains example, and quoting "[useless] filename (something)"so what I want is just to strip the brackets and parenthesis, some are folders, others are text files
View 1 RepliesI am playing with various characters in the command- line interface trying to learn what they mean and when i should use them.
View 7 Replies View RelatedI've written myself a linux program "program" that does something with a regular expression. I want to call the program in the bash shell and pass that regular expression as a command line argument to the program(there are also other command line arguments). A typical regular expression looks like "[abc]_[x|y]".Unfortunately the characters [, ], and | are special characters in bash. Thus, calling "program [abc]_[x|y] anotheragument" doesn't work. Is there a way to pass the expression by using some sort of escape characters or quotation marks etc.?
(Calling program "[abc]_[x|y] anotheragument" isn't working either, because it interprets the two arguments as one.)
I've written myself a linux program "program" that does something with a regular expression. I want to call the program in the bash shell and pass that regular expression as a command line argument to the program (there are also other command line arguments). A typical regular expression looks like "[abc]_[x|y]". Unfortunately the characters [, ], and | are special characters in bash. Thus, calling "program [abc]_[x|y] anotheragument" doesn't work. Is there a way to pass the expression by using some sort of escape characters or quotation marks etc.? (Calling program "[abc]_[x|y] anotheragument" isn't working either, because it interprets the two arguments as one.)
View 8 Replies View Relateddhclient does not strip or escape shell meta-characters
Summary: dhclient doesn't strip or escape certain shell meta-characters in dhcpd responses, allowing a rogue server or party with with escalated privileges on the server to cause remote code execution on the client.
CVE:
ISC dhclient did not strip or escape certain shell meta-characters in responses from the dhcp server (like hostname) before passing the responses on to dhclient-script. Depending on the script and OS, this can result in execution of exploit code on the client.
CVSS Score:
For more information on CVSS scores, visit [url]
Workarounds:
On SUSE systems, it is possible to disable hostname update by setting DHCLIENT_SET_HOSTNAME="no" in /etc/sysconfig/network/dhcp.
Other systems may add following line to dhclient-script at the beginning of the set_hostname() function:
In environments where filters/acls can be put into place to limit clients to accessing only legitimate dhcp servers, this will protect clients from rogue dhcp servers deliberately trying to exploit this bug.
However, this will not protect from compromised servers.
Active exploits:
Solution:
Upgrade to 3.1-ESV-R1, 4.1-ESV-R2 or 4.2.1-P1. [url]
No patch is available for 4.0.x as it is EOL. Anyone running 4.1.x should upgrade to 4.1-ESV-R2.
Acknowledgments:
Revisions:
I want to sort a number of lines based on their size:
data:
-------
12345678
87654321
1234
[code]....
Should output as:
-----------------
1
2
12
21
[code]....
But i'm gettings this with sort
----------------
1
12
123
1234
[code]....
Can we sort the above "data" text, based on "number of characters" instead of "character order"?
We have a list of cyclones in the world. Now i got to check whether or not the second field is more than 1000 mm. If so, than the line has to have a[*] at the end of the line. For exemple:
Australia:1411:55.55:Mackay Cyclone 1918:1918:Mackay
to
Australia:1411:55.55:Mackay Cyclone 1918:1918:Mackay[*]
I also have to use a substitute. So far i've got this but it fails, 6,$s/([0-9])111:1/.* [*]
I want to be able to use Ctrl+R to have reverse-i search. Also if I press Shift+Up Arrow after typing the first few characters of a recently executed command then the shell should complete the command by finding the most recent commmand having the same first few characters.
View 1 Replies View RelatedAny time the word The appears at the beginning of a line, I want to move it to the end of the line and capitalize the new first word in the line. For example, The heaven becomes Heaven the. I'm trying to test this out for my Library.
View 2 Replies View RelatedI'm having trouble setting up PuTTY with Ubuntu. I'm trying to get line characters to work in aptitude as well as 256-color support, but can only get one or the other.
Ubuntu Config:
Using 64-bit Ubuntu
Terminal type xterm-256color or putty-256color gives 256-color, but incorrect line characters.
Terminal type linux gives proper lines in aptitude, but only 16 colors.
PuTTY Config:
Using font with Unicode characters. (DejaVu Sans Mono)
Received Data is assumed to be in UTF-8.
Set to use Unicode line drawing code points.
Output from locale:
I wish to replace a new line with br (html) but it doesn't seem to work
Code:
message=$(echo ${FORM_message} | tr '
' '<br />' )
what it gives me seems to be ... b...? I am also having problem escaping hash sign in cut command:
Code:
list=$(echo "$line" | cut -d'#;#' -f1) ;
my intention is to split the line with "#;#"
Does CentOS 5 support the ATA TRIM command for use with SSDs? Is the support automatic by default, or would I need to do something specific in order to enable the TRIM feature be used?
View 1 Replies View RelatedI have a log file that contains information like this:
----------------------------
r11141 | prasath-palani | 2010-12-23 16:21:24 +0530 (Thu, 23 Dec 2010) | 1 line
Changed paths:
M /projects/
M /projects/
[code]....
what i need is, i need to copy the data given between the "---" to seperate files, for, e.g. the first set of data between the "---" should be in one file and another set of data in another file.
With the new Intel G2 SSDs coming out, I'm thinking about upgrading my hard drive. However, there seems to be an extra level of software support needed for SSD drives. From what I have read there can be performance degradation over time and other issues. Does anyone know how well SSD drives are supported in Linux and also if there is support for the TRIM command or if it is planned?
View 10 Replies View RelatedWhen I upload a file usind the scp that contains the German characters these characters get changed to . For example, a sentence in an html file like this
looks like this
Why are this characters getting changed?
When i am running ps -ef command I am getting the execution of the commnad in "80characters"
View 5 Replies View Relatedsed '/
$/ {N s/
//}'
sed: -e expression #1, char 10: extra characters after command
I want to understand what is wrong with my command line. When I can do the some of following in a script but not in a command line. I have been working through the tutorial at [URL]. When I got stuck at the section Working with Multiple Lines. These script works fine.
#!/bin/sh
sed '
# look for a "#" at the end of the line
/#$/ {
# Found one - now read in the next line
N
# delete the "#" and the new line character,
s/#
//
}' file
In my case I am looking for or return ^M.
#!/bin/sh
sed '
# look for a "#" at the end of the line
/
$/ {
# Found one - now read in the next line
N
# delete the "#" and the new line character,
s/
//
}' file
The problem is when I try to convert it to a single line shell command it gives me an errors.
sed '/
$/ {N s/
//}'
sed: -e expression #1, char 10: extra characters after command
sed '/
$/{N s/
//}'
sed: -e expression #1, char 9: extra characters after command
sed '/
$/{Ns/
//}'
sed: -e expression #1, char 8: extra characters after command
I want to understand what is wrong with my command line. When I can do the following in a script but not in a command line. I have created a sed script to do the work I want.
cat test.sed
#!/bin/sed -f
/
$/ {
N
s/
//
}
Need little advice running this command.
watch -d 'ps aux | awk '{print $4" "$11}' | sort | uniq -c | awk '{print $2" "$1" "$3}' | sort -nr | head'
I get this error message from AWK. awk: cmd. line:1:
{print awk: cmd. line:1: ^ unexpected newline or end of string
I have tried all the usual by trying to escape the single and double quotes in the command but same result. The end result should be the a listing of memory hungry processes that are scanned every 2 seconds (watch default value).
Anybody know and command to count any characters in file? I would like to know the total number of character " (quote) in file. My idea is to check if in a script the total number of this character is pair.
View 4 Replies View RelatedI'd like show a certain line or lines of a file with context, kind of like a unified diff, on the command line in Linux:
$ (something) -l 154 stuff.py
150: def foo(bar):
151: """
[code]....
How can I print Linux command line history without including the line numbers? I want to send it all to a text file like this:history >> history.txt
View 1 Replies View Relatedi've gotten my fedora 12 to the point where i can run python3 scripts from command line and can call up python 2.6.2 idle with the command 'idle' from command line. what command will call up python3 (3.1.2 to be exact) idle?
View 5 Replies View RelatedI know my way around MS Windows much better, but I just don't feel right trying to program something for Android on a Microsoft operating system. I am interested in Android programming so I followed the instructions on [URL] to install the environment on my computer...
I just installed the JDK, SDK, Eclipse successfully (or I assume):
* When I get to Step 4 where I'm supposed to run 'android' it will not run. I get the error message "android: command not found" (I am definitely in the right directory).
** When I double-click it in nautilus, it opens up in gedit. I can set the permissions in nautilus (through the properties - Allow executing file as a program) and get it to work,
My system:
Intel i7
Ubuntu 10.10 Maverick Meerkat
android-sdk-linux-x86
eclipse 3.6.2
I installed the Berkeley DB on the Ubuntu server and tried to access the dbxml from the command line and it returns command not found
path/to/dir/dbxml-2.5.16/install/bin$dbxml
-bash" dbxml: command not found
Can someone point me in the right direction
While modifying the definition of my PS1, I saw that "[" and "]" markers should be added to help bash to compute the right display lenght. Many exemples on the web do not use them or even mention them.I searched for a solution to add them automatically, like with sed, but I didn't find any example.Are they still needed and is there a recommandation not to use sed to define PS1?
View 1 Replies View Relatedhow do you write the ASCII character #27 in the vim command line?
View 6 Replies View RelatedI'm having a bit of a headbanger trying to work this one out. I'm trying to remove all of the characters on a line apart from the last 17. For example, I need to change this:
Code:
00000000000000000089;0bbfaeb8
01000000000000000089;0bcb5948
00000000000000000089;0bcc4c40
[code]....
I would like to replace 'xxxx' with 'yyyy' which is in a file xyz.csproj not sure of what 'xxxx' is, it can be 3055, 4056, 7089 etc. I know it always appears at line # 5 and at character 50.
<Reference Include="System.Management" />
<Reference Include="System.ServiceProcess" />
<Reference Include="System.Windows.Forms" />
[code]....
I'm currently using mogrify -strip image.jpg to remove unwanted bytes from images, it was suggested I could remove further data by using jpegran from libjpeg, something like:
jpegtran -copy none -optimize -outfile image.jpg image.jpg
The problem I'm having - if it even is a problem - is that jpegtran doesn't seem to actually do anything that mogrify isn't already doing. In all my testing the filesize just stays the same. If I remove the mogrify part of my code and replace with jpegtran then it seems to perform the same function.
For example:
image without compression: 300k
image with mogrify -strip + jpegtran: 272k
image with mogrify -strip only: 272k
image with jpegtran only: 272k
I was under the impression though that mogrify just removed image profiles/comments and that jpegtran did this as well as losslessly compressing the image to make it smaller. Am I missing something?
Probably an easy question but my googlefu is weak. How do I change the number of characters per line for konsole?
View 6 Replies View Related