General :: Use The Man / Info / Apropos Pages - Character Instructed The Shell To Interpret A Special Character As An Ordinary Character?
Mar 27, 2010
1.What character instructd the shell to interpret a special character as an ordinary character?
2.What directory contains some of the utilities available on the system in the form of binary files?
3. What command is used to search the location of a utility?
4. What command is used to instruct the editor to write the file and quit the editor?
5. What key quits the more utility and displays the shell prompt?
6. What command starts a child shell as the super user, taking on root's identity and environment?
7. Which wildcard characters can be used for searching all the files in the system that start with "A"?
8. The user name or login name of the super user is????
[Code]....
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Apr 11, 2011
I want to match some filename in some text, but the filenames I have no control of, so "[" can "]" can appear in the filenames.so do I always have to use sed to addslashes to these variables before I have to grep them? and what other characters have I missed other than "[", "]", "."?
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Jun 12, 2011
I was messing around with the alternate character panel app and made a custom character set. I then wanted to put it on a new panel and created a new panel. I moved the character set to that panel, and then started to mess around with the panel settings (auto hide, show hide buttons, and expand, to be specific.) So far so good, until I moved the panel from the right side of the screen to the top. I already had a panel here, and it seemed not to like hiding a panel when there was already one on the top.
When the new panel hid itself, all my panels stopped responding (any clicks on them did nothing) and my processor started going at 100%. I tried a reboot and the only thing that changed is that now I can't even see my panels. I'm guessing I need to change the settings back manually through the prompt, but I don't know how to do that. I am using 10.04 and have not upgraded gnome since upgrading to 10.04.
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Mar 12, 2011
I need a script that will replace '/' in a variable with ''I have tried the following:
Code:
y=$(echo $1|sed 's///\/g')
The thing is that this approach does not always work. Here is an example:
Code:
user@pc:~$ sh script.sh /usr/var/sakis.txt
z:usr
arsakis.txt
user@pc:~$ sh script.sh /usr/tar/sakis.txt
z:usr arsakis.txt
Is there a way to treat those characters?
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May 18, 2011
Operating System: CentOS 5.4 I have a bash script that runs another php script to return a decrypted password. The return value is right but when I concatenate it with another string, I would not have the whole string. To better understand the problem, here is my script:
***********************************************************************************
#!/bin/bash
getProperty()
[code].....
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Nov 3, 2010
we have Centos linux and database postgresql and taking dump in .data files. need to find all speical character in my database dump .data files it is open in txt paid and store in one txt file. e.g of special character are as below.
[Code]....
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Feb 27, 2009
I have two systems at hand. One a Debian box, the other a RHEL5 box. On the Debian box there is a MySQL server (5.0.32-Debian_7etch1) running which hosts Databases from a customized content management system. This system has grown over time and the tables are stored with different collations. Now I want to export and reimport the data on the RHEL5 MysQL server (5.0.45).
And here the special character hell begins. It doesn't matter if I reimport the data as utf8, as latin1 or latin1_swedish_ci. Everytime the special characters are wrong and distorted. Surprisingly the data that is shipped with the unmodified CMS displays the special chars correctly after installation. But I have to import the modified version from the old server as there are lots of modifications to import.
Old server:
Quote:
character set client utf8
(Global value) latin1
character set connection utf8
[code]....
New server:
Quote:
character set client utf8
(Global value) latin1
character set connection utf8
[code]....
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Apr 30, 2011
i have a script where i need to pass an argument "1234:-)"if i run this as ./shell.sh 1234:-)it wont work because invalid character. i need to handle this with expect utility so if i pass it as ./shell.sh "1234:-)"no issue in bash but expect does not recognize this.
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Oct 21, 2010
when I try to enter an escape sequence in the interactive mode of dash, it keeps on spewing out the <ESC> character as ^[ displayed in plain text instead of catching it as a control character. I vaguely remember encountering this on some UNIX shell but for the life of me I can't find anything on it. So how do I properly enter escape sequences in dash's interactive mode? (it supposedly supports vi line edit mode but I can't access it at all because of the ESC situation)It's not a make-or-break thing.
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Jun 9, 2011
I am bouncing a file across platforms (windows->solaris->mainframe), and the file is starting out with a "special" character (the registered trademark "circle R") in some of the records. This character is not in the EBCDIC character set on the MF, so it is unrecognizable. The MF developer I am working with asked if it is possible to replace the character with a specific hex value (AF) before it gets to the MF.
I was putzing around with sed, tr, etc. on the ksh command line, hoping to find an easy way to get one of them to substitute hex instead of ASCII. I have found that the usual shell utilities recognize the trademark character, so homing in on what to replace is solved. But I cannot get anything to actually substitute in the hex sequence I want. E.g. I was thinking something like...
>cat special_file | sed 's/R/AF/g'
But my version of sed does not seem to have hex "editing" capability.
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May 4, 2009
Inside a loop i'm populating a string variable. Because csh doesn't have very good support for arrays I thought of doing this. I want to add a new line character to the end of the concatenation each time the loop iterates. Then at the end print this variable out.
I tried " and some resources said it was just a "". Neither work. What am I doing wrong?
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Apr 29, 2010
I have to enhance the behaviour of a backup script written in perl. I don't need to change it, what I need to do is to create a bash script that does some checks like file name and file size, execute the backup script then check if the backup files match the original files.Here's how I try to do it:
- read the files from the original files folder
- store them in an array
- search in the array the files that have a specific file extension
- store the file names that match the search pattern (I know the backup script skips some files so I can hardcode the search pattern)
- run the backup script
- read the files from the backup folder
- store them in an array
- compare the original files name and size stored in an array with those from the backup folder
- send a report email
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Mar 1, 2010
I need to write a shell script which can compare two files(text files) character wise. eg. underscore is space.
------FILE 1---------------
A_B_C
D_E_F
G_H_I
[code].....
Actual problem: I need to write a shell script which can give me difference character by character not by line (using comm)
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Feb 27, 2011
I would like to know what shell command I could use for finding a phrase (which is a URL) in many files, with a different phrase. I have tried the "sed" command, but it does not like the forward slash.
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May 11, 2011
1,i access my server via secureCRT, when i typed the Code: vim in it, it shows Code: -bash: vim: command not found . how to install the vim? my linux version is centos.
2, when i typed some chinese characters in VI, it shows unnormal. maybe i should set the default character to UTF-8. but i don't know how to set it.
3,i want to copy a html file code to VI, how do i do?
4,how to create a file. like this? Code: mkdir filename ?how to rename the file, which i created by VI and had some contents in the file.
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Aug 5, 2010
I am using the following command to add a comma to the end of each line in my file:
but for some reason the comma gets placed on a new line in between each line in the file. Why is this?
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Dec 23, 2009
In programming and various terminal programs (Screen, Vim) the [, ], { and } tends to be used a lot. I'm using a Norwegian keyboard where these are placed such that I have to stretch my fingers a bit too long for whats comfortable. To make it easier I though I'd try to make alt+[some key] be one of these characters. Is there a way that I can bind, say alt+� (Norwegian letter) to '{' system wide?Btw, is such thing called binding, mapping or something else? I'm getting a bit confused by the terms...
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Apr 6, 2010
i have a trouble here to cut a file
cut -c1-2 /etc/hasil.log
THE RESULT IS :
PI
64
64
64
[Code]....
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Jan 11, 2011
look into the following command...
Code:
asit@ubuntu:~/script$ echo 567 | wc -c
4
though 567 is a 3 character number, why the o/p is 4 ??
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Jul 9, 2010
I am attempting to set a character set of IBM850 on slackware linux for a particular application (epic5). I am using rxvt-unicode and have setup LANG/LC_*=en_US. Now if I set the encoding to IBM850 in kde's konsole program im able to display certain characters correctly. I'd rather not use IBM850 for everything; is there a way to set/alias a command for a per application execution?
I've tried things like:
LC_CTYPE=IBM850 epic5
LC_ALL=IBM850 epic5
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Jun 22, 2011
I'm looking for a way to force my PS1 variable to a certain number of chars.
It currently looks like:
$PS1="W $"
and I'm trying to keep the same number of characters regardless of the length of current folder name.
For example, both Documents and bin would be displayed as 10 character strings, keeping the left side of my terminal the same width all of the time.
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Jan 12, 2010
i need some help to solve thisif i have this , CREATE TABLE "HALOOO"in one lineafter this line they have "BRANCH INFO" how do i use the (") that is in create table line and not affect other line
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Aug 9, 2010
I would like to know how I can change a file so it has the same character encoding as files saved as comma separated csv files from Microsoft Excel.
I have tried using iconv to do this. code...
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Oct 5, 2009
i studied the program chardev.c from 'The kernel module programming guide'. The text tells me that by doing a :
1. 'cat' the character device is opened.
2. hi > /dev/hello the character device is written into.
now i wanted to know how to 'read' from the character device !
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May 17, 2010
I'm reading linux device drivers,
and I'm creating a scull-like driver.
I alloc a chrdev region
with
alloc_chrdev_region(&dev,minor_number,number_of_devs);
how can i deallocate it ? I tried with
unregister_chrdev_region but it does work only for
statically allocated devices.
i want to deallocate it so that only a single major number is assigned to my driver and
cat /dev/devices | grep $dev_name
returns no more than 1 line.
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Apr 19, 2011
I have a keyboard with two faulty buttons, and I don't want to through away my keyboard just for two buttons.I have linux and windows, In DOS and Windows I somehow managed to get away with this problem by typing Alt+65 (for letter 'A') and so on.and in Linux while in GUI I take use of on screen keyboard. But problem starts with when I work in run level 3.
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Jul 19, 2010
I am accessing a program through X11. My OS is Suse 10.3. However when I access this program, the menu bar title are not letter but a string of characters of "[]". I need to find a way to perform a character setting for X11 using SUSE.
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Jun 15, 2010
I want to remove single quote from a variable. eg: Suppose I have a variable VAR='TEST' (including single quotes) How can I remove single quotes and make it TEST.
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Jun 21, 2011
I need to replace a value in a file. For example the content of data.txt file is:
1 1 23
2 1 42
3 2 52
4 2 62
5 1 77
6 1 88
7 2 99
8 1 100
Could I substitute 2 in second column with 3 using awk and or sed or other command so that the data will be change as follow?
1 1 23
2 1 42
3 3 52
4 3 62
5 1 77
6 1 88
7 3 99
8 1 100
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May 17, 2011
This is what i doing to remove ( and ) sed 's/(//'|sed 's/)//') Can you offer me some better sed code that remove ( and ) with blank without using pipe (|) . I mean sed code that check ( or ) and replace that with blank character.
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