Find files which contain a null character Post: 93053

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GREP a string with NULL Character

Does anyone know how to use grep/egrep to find a string that contains a null character? i.e.: the string looks like this: null0001nullN well I want to be able to : grep '0001N' is there a wildcard character or something that I can put in the grep to include the nulls?

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sending a null character to a terminal

I'm testing out some ESMTP AUTH stuff, and it requires that the username and password be on the same line separated by a null character. Does anyone know how to echo the ASCII null character? Thanks, Alex

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batch delete using find, files with # character

UPDATE: Sorry, disregard this. It did work, I made a mistake; I just shouldn't have been using maxdepth. I do think it is good to know, however, that find | grep '#' | xargs rm will "clean up" funnily named files in a directory. Of course, some of those funnily named files are there...

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Null Character Handling

Hi All, I have a problem with Null values while reading line by line from a text file. I wrote a shell script to read set of file names from a text file line by line, and zipping the each individual file and copying those zip files into some separate directory, and removing the original file...

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need to find last character in each line in all files

Hi, I need to read each line in all files .If last character in each line is not ;(semicolon) then i need to append next line also.Here each line may consists of multiple semicolons(;).but i need to read only last character.I need to achieve this using shell script.And i need to remove tht last...

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Question about NULL Character & fgets()

Assume client send the message " Hello ", i get output such as Sent mesg: hello Bytes Sent to Client: 6 bytes_received = recv(clientSockD, data, MAX_DATA, 0); if(bytes_received) { send(clientSockD, data, bytes_received, 0); data = '\0';...

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Insertion of Null Character while writing into file

I have a huge file with record length around 5000 characters. There is an ETL tool datastage which is writing this data to the file(AIX server). At position 4095 i have seen NULL Character(^@). when i am using this command "head -1 file_nm | sed 's/\000//g'" --- the output is displaying...

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Find character and Replace character for given position

Hi, i want find the character '-' in a file from position 284-298, if it occurs i need to replace it with 'O ' for the position in the file. How to do that using SED command. thanks in advance, Sara

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To find record having null value

Hi All My requirement is to find the null values in particular column of a file and reject it in case if it contains null values. But the challenge is that I want a common command which can be used across different file, as the position of the column we need to check for different file may get...

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Remove first NULL Character in Flat File

We have a flat file with below data : ^@^@^@^@00000305^@^@^@^@^@^@430^@430^@^@^@^@^@^@^@^@^@09079989530As we can see ^@ is Null character in this file I want to remove only the first few null characters before string 00000305 How can we do that, any idea. I want a new file without first few...

LEARN ABOUT OPENSOLARIS

replace

replace(1)							  MySQL database							replace(1)

NAME

       replace	-  A utility program that is used by msql2mysql, but that has more general applicability as well. replace changes strings in place
       in files or on the standard input. Uses a finite state machine to match longer strings first. Can be used to swap strings.

USAGE

       replace [-?svIV] from to from to ... -- [files]

       or

       replace [-?svIV] from to from to ... < fromfile > tofile

SYNOPSIS

       replace [-?|-I] [-s] [-v]

DESCRIPTION

       replace

       -?|-I  info

       -s     silent

       -v     verbose

EXTRA INFO

       Special characters in from string:

       ^     Match start of line.

       $     Match end of line.

            Match space-character, start of line or end of line. For a end  the next replace starts locking at the end space-character.  A	
	      alone in a string matches only a space-character.

EXAMPLE

       this command swaps a and b in the given files:

       shell> replace a b b a -- file1 file2 ...

SEE ALSO

       isamchk(1), isamlog(1), mysql(1), mysqlaccess(1), mysqladmin(1), mysqld(1), mysqld_multi(1), mysqld_safe(1), mysqldump(1), mysql_fix_privi-
       lege_tables(1), mysqlshow(1), mysql_zap(1), perror(1),

       For more information please refer to the MySQL reference manual, which may already be installed locally and which is also available  online
       at http://www.mysql.com/doc/en/

BUGS

       Please refer to http://bugs.mysql.com/ to report bugs.

AUTHOR

       Ver  1.0,  distribution	4.0.24	Michael (Monty) Widenius (monty@mysql.com), MySQL AB (http://www.mysql.com/).  This software comes with no
       warranty.  Manual page by L. (Kill-9) Pedersen (kill-9@kill-9.dk), Mercurmedia Data Model Architect / system developer  (http://www.mercur-
       media.com)

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +--------------------+------------------------------------+
       |  ATTRIBUTE TYPE    |	       ATTRIBUTE VALUE		 |
       +--------------------+------------------------------------+
       |Availability	    | SUNWmysqlr, SUNWmysqlu, SUNWmysqlt |
       +--------------------+------------------------------------+
       |Interface Stability | External				 |
       +--------------------+------------------------------------+
NOTES

       Source for mysql is available on http://opensolaris.org.

MySQL 4.0							 19 December 2000							replace(1)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

GREP a string with NULL Character

Discussion started by: weerich

2. UNIX for Advanced & Expert Users

sending a null character to a terminal

Discussion started by: vertigo23

3. UNIX for Dummies Questions & Answers

batch delete using find, files with # character

Discussion started by: tphyahoo

4. Shell Programming and Scripting

Null Character Handling

Discussion started by: npk2210