02-01-2010
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi....
I have a situation...I have a data file...that has space(an extra row with no data) at the end of file. I am trying to remove that spaces only if the file has a space at the end of file and if there is no space I don't want to do anything.
Can you please help me in this regards.
... (4 Replies)
Discussion started by: rkumar28
4 Replies
2. UNIX for Dummies Questions & Answers
hi all, i have this question: How to add new line character at the end of a file????
i need this because i am loading a file to sybase and i have problems with the last record
thanks for your help (5 Replies)
Discussion started by: DebianJ
5 Replies
3. Shell Programming and Scripting
Im trying to add 5 blank spaces to the end of each line in a file in a sed script. I can figure out who o put the spaces pretty much anywhere else but at the end.
thanks
Karl (7 Replies)
Discussion started by: karlanderson
7 Replies
4. Shell Programming and Scripting
Hi,
I want to add \n as a EOF at the end of file if it does't exist in a single command. How to do this?
when I use command
echo "1\n" > a.txt
and
od -c a.txt
0000000 1 \n \n
0000003
How does it differentiate \n and eof in this case?
Regards,
Venkat (1 Reply)
Discussion started by: svenkatareddy
1 Replies
5. Shell Programming and Scripting
Hi All
I have a file which conatins record.the length of every records is 47.
problem : in the end of record i don't have a "\015" character.
i want to add this "\015" charcter in the end of every record.
the file contains something like 700 records.
i've tried with sed command - nothing.
... (8 Replies)
Discussion started by: naamas03
8 Replies
6. Shell Programming and Scripting
hi,.
I am writing a small script in csh...
Can any one tel me how to add space at end of each line in a file (9 Replies)
Discussion started by: Manju87
9 Replies
7. Shell Programming and Scripting
Hi Folks,
I want to add one name at the end of one file.
Below line i have to add end of line some name...
Search_masterlogin=`grep -i $masterlogin passwd.master|awk -F: '{print $1}'`
$ grep -i susan passwd.master |awk -F: '{print $1}'
susan
$
I want to insert one name called... (10 Replies)
Discussion started by: susindram
10 Replies
8. Shell Programming and Scripting
Hi,
I need a ksh script for the below requirement:
i have a Delimited flat file with 200 records delimiter is '|~|'
i need a script to insert space at the end if the record is ending with delimiter '|~|'
if it didnt end with delimiter it should not append space.
Example: ram|~|2|~| ... (16 Replies)
Discussion started by: srikanth_sagi
16 Replies
9. UNIX for Dummies Questions & Answers
Hello All,
this is my first post so I don't know if I am doing this right.
I would like to append entries from a series of strings (contained in a text file) consecutively at the end of specifically labeled lines in another file.
As an example:
- the file that contains the values to be... (3 Replies)
Discussion started by: gus74
3 Replies
10. Shell Programming and Scripting
hi,
I'm trying to calculate IP addresses and their respective calls to our apache Server. The standard format of the input is
HOST IP DATE/TIME - - "GET/POST reuest" "User Agent"
HOST IP DATE/TIME - - "GET/POST reuest" "User Agent"
HOST IP DATE/TIME - - "GET/POST reuest" "User Agent"
HOST... (2 Replies)
Discussion started by: busyboy
2 Replies
LEARN ABOUT CENTOS
trace_printk
TRACE_PRINTK(9) Driver Basics TRACE_PRINTK(9)
NAME
trace_printk - printf formatting in the ftrace buffer
SYNOPSIS
trace_printk(fmt, ...);
ARGUMENTS
fmt
the printf format for printing
...
variable arguments
NOTE
__trace_printk is an internal function for trace_printk and the ip is passed in via the trace_printk macro.
This function allows a kernel developer to debug fast path sections that printk is not appropriate for. By scattering in various printk
like tracing in the code, a developer can quickly see where problems are occurring.
This is intended as a debugging tool for the developer only. Please refrain from leaving trace_printks scattered around in your code.
(Extra memory is used for special buffers that are allocated when trace_printk is used)
A little optization trick is done here. If there's only one argument, there's no need to scan the string for printf formats. The trace_puts
will suffice. But how can we take advantage of using trace_puts when trace_printk has only one argument? By stringifying the args and
checking the size we can tell whether or not there are args. __stringify((__VA_ARGS__)) will turn into "() " with a size of 3 when there
are no args, anything else will be bigger. All we need to do is define a string to this, and then take its size and compare to 3. If it's
bigger, use do_trace_printk otherwise, optimize it to trace_puts. Then just let gcc optimize the rest.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 TRACE_PRINTK(9)