02-12-2008
insert null in unix files
Hi everybody,
How to add null values in unix file?
This is what was asked to me in an interview.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
im having trouble with moving files in a directory into /dev/null
for file in $HOME/.trashcan/
do
mv $file /dev/null
done
the error msg i get is:
mv: /dev/null: not a directory.
does anyone know how to fix this?
thanks
primal (16 Replies)
Discussion started by: primal
16 Replies
2. UNIX for Dummies Questions & Answers
Hi,
I would like to use grep to find files which contain NULL characters. I'm not sure how to represent the null character in the grep statement.
Could anyone help please?
Thanks!
Helen :confused: (5 Replies)
Discussion started by: Bab00shka
5 Replies
3. UNIX for Dummies Questions & Answers
hii..
I have a pipe delimited file
For ex:
TEST_1-8J6TZN|ASLANK|BHR-09||TRAM
I want to grep for NULL in the 4th field only from the above file
Please suggest
Also let me know if there is any limitation in the suggested command
Thanks all in advance..!! (5 Replies)
Discussion started by: sureshg_sampat
5 Replies
4. Shell Programming and Scripting
Hi ,
I have a script where i will remove header and trailer record and ftp to another server.
I'm using the code:
latestfilename=`ls filename_* | tail -1`
echo "Latest filename = $latestfilename"
sed '1d;$d' $latestfilename > a.ftpedfile
I have an issue if input data is having null... (1 Reply)
Discussion started by: ammu
1 Replies
5. Shell Programming and Scripting
hi all,
iam new to this forum.i have to submit the script EOD.so please help me.
my requirement is to compare two null values..iam trying to compare two null values :One null value output of the storedprocedure and another iam giving spaces in script.
it is giving the error... (11 Replies)
Discussion started by: bbc17484
11 Replies
6. Shell Programming and Scripting
Dear All,
I have the following input file. I want to replace data with null values.
I/P File:
9022334455|2008-12-06 06:10:21|2|Error@@@|esoo8erp|
9024334432|2008-12-06 08:40:59|6|Error@@@|6y2o8e6r|
O/P File:
9022334455||2||esoo8erp|
9024334432||6||6y2o8e6r|
... (4 Replies)
Discussion started by: hanu_oracle
4 Replies
7. Shell Programming and Scripting
I have an input file having 7 fields delimited by ,
eg :
1,ABC,hg,1,2,34,3
2,hj,YU,2,3,4,
3,JU,kl,4,5,7,
4,JK,KJ,3,56,4,5
The seventh field here in some lines is empty, whereas the other lines there is a value.
How do I insert string NULL at this location (7th loc) for these lines where... (8 Replies)
Discussion started by: zilch
8 Replies
8. UNIX for Advanced & Expert Users
I am testing some file routines against potential "nasty name" Unix files, such as those with a CR, LF, in the middle or NULL terminated, utf multi-byte character. So, under Bash, I want some way of:
mv "name" "name\0"
with the \0 a real NULL.
Against all my efforts, I have not been... (2 Replies)
Discussion started by: drewk
2 Replies
9. UNIX for Dummies Questions & Answers
How can I make /dev/null all the 8640 files that I am getting from this command.
find . \( ! -name . -prune \) -type f -name "EXPORT_v1x0*" | awk -F'_' '$6<20120812'
And then delete everything.
If I am using this command to delete it, I am getting Disk Quota Exceeded Exception.
find .... (4 Replies)
Discussion started by: raihan26
4 Replies
10. Shell Programming and Scripting
i have this code
for i in `cat sql_output.txt`
do
-- some script commands
done
sql_output.txt has 1 column with employee_ids
If the sql_output.txt is null then the do loop should not execute.
How can i implement this.
for i in `cat sql_output.txt`
If i is null or empty
then ... (5 Replies)
Discussion started by: rafa_fed2
5 Replies
LEARN ABOUT OSX
curl_getenv
curl_getenv(3) libcurl Manual curl_getenv(3)
NAME
curl_getenv - return value for environment name
SYNOPSIS
#include <curl/curl.h>
char *curl_getenv(const char *name);
DESCRIPTION
curl_getenv() is a portable wrapper for the getenv() function, meant to emulate its behaviour and provide an identical interface for all
operating systems libcurl builds on (including win32).
AVAILABILITY
This function will be removed from the public libcurl API in a near future. It will instead be made "available" by source code access only,
and then as curlx_getenv().
RETURN VALUE
If successful, curl_getenv() returns a pointer to the value of the specified environment. The memory it refers to is malloc()ed so the
application must free() this when the data is no longer needed. When curl_getenv(3) fails to find the specified name, it returns a null
pointer.
NOTE
Under unix operating systems, there isn't any point in returning an allocated memory, although other systems won't work properly if this
isn't done. The unix implementation thus has to suffer slightly from the drawbacks of other systems.
SEE ALSO
getenv(3C),
libcurl 7.12 30 April 2004 curl_getenv(3)