If the files are pure 7-bit ASCII, you can replace the NUL with an extended character. Just make sure you don't pick one which already exists in the file. And make sure you don't use its UTF8 representation, which is by definition multiple bytes.
Or if you can find a 7-bit printable character which doesn't occur in the file. try that. (Tab? Tilde? Underscore? @?)
... assuming your tr understands backslashed octal.
Grepping for special characters can be tricky, too; presumably, your grep will also treat NUL as end of string. Try replacing all occurrences of your character and comparing the result against the original; if they are binary identical, you have found a character which doesn't occur in the file.
... assuming your cmp accepts - to mean standard input.
I just had a filesystem / file corruption issue on my HSP's server due to disk capacity limits and fileswapping. I discovered that certain files got corrupted when fileswapping was not successful and they ended up with a string of control characters, or what I believe to be nulls, in them.
Does... (4 Replies)
Hi ,
I have faced a strange situation in Solaris.
the command ps -eo pid,args | grep 'SOMEPROCESS' truncates the output.
outpt looks like
111 xxxxxxxxxxxxx SOMEPROCES
123 xxxxxxxxxxxxx SOMEPROCES
323 xxxxxxxxxxxxx SOMEPROCES
The above doesn't return the complete command/args, infact if... (1 Reply)
Hi,
Output of running berkeley ps is truncated to 80 chars when using redirections.
$ /usr/ucb/ps -e 12490|cat #truncated to 80 chars
PID TT S TIME COMMAND
12490 pts/24 S 0:00 sleep 4000 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
getting longer lines is done by changing the stty
$... (7 Replies)
infile:
z y x
c b a
desired output:
x y z
a b c
I don't want to sort the lines into this:
a b c
x y z
nor this:
c b a
z y x
The number of fields per line and number of lines is indeterminate. The field separator is always a space.
Thanks for the use of your collective brains.... (11 Replies)
I'm relatively new to Pro*C programming. In the following example:
char name; EXEC SQL SELECT 'John Doe' INTO :name FROM DUAL;
"John Doe" is in positions 0-7, blanks in 8-19, and a null in 20. I would really prefer the null to be in position 8 and I don't care what's after that. I wrote a... (1 Reply)
Hello,
I am checking the length of each line of a fixed length file and making sure all lines are 161 length. My problem is that some files contain null characters which gets stripped out of my echo. How do I have the NULLs included in my check? (and I cannot replace or sub the NULL values with... (10 Replies)
Hello,
I am looking to automate a task - which is updating an existing access control instruction of a server and making sure that the attributes defined in the instruction is in sorted order. The instructions will be of a specific syntax.
For example lets assume below listed is one of an... (6 Replies)
Hi,
I've a PIPE delimited file with about 5 fields. Sometimes the records in the 4th field is null, so I want to replace it based on values we get it on 2nd field in the same file.
Following is an example.
ABCD|X-TYPE 3.0|2010|X-TYPE|20000
CDEF|C-TYPE 2.5|2011|C-TYPE|10000
XYZ|LX... (4 Replies)
I have a script on a Linux machine that connects remotely, via telnet on a windows machine to launch several commands and colect their output. On the Linux machine the output of these commands is redirected in a file.
The script:
#!/usr/bin/expect
log_user 0
spawn telnet 10.10.10.10... (6 Replies)