9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I apologize if this question has been answered else where or is too elementary.
I ran across a KSH script (long unimportant story) that does this:
if ; then
CAS_SRC_LOG="/var/log/cas_src.log 2>&1"
else
CAS_SRC_LOG="/dev/null 2>&1"
fithen does this:
/usr/bin/echo "heartbeat:... (5 Replies)
Discussion started by: jbmorrisonjr
5 Replies
2. UNIX for Dummies Questions & Answers
How are these two different? They both prevent output and error from being displayed. I don't see the use of the "&"
echo "hello" > /dev/null 2>&1
echo "hello" > /dev/null 2>1 (3 Replies)
Discussion started by: glev2005
3 Replies
3. 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
4. Shell Programming and Scripting
Hi all,
I am trying to grep a .txt file for a word. When I hit enter, it returns back to $
The file is 4155402 in size and is named in this way:
*_eveningtimes_done_log.txt
I use this command, being in the same directory as the file:
grep -i "invalid" *_eveningtimes_done_log.txt
... (16 Replies)
Discussion started by: DallasT
16 Replies
5. Shell Programming and Scripting
hi
i try to check if awk returns null
and i dont know how it's works
this is the command
set EndByC = `ls -l $base | awk '/.c$/ {print $9}'`
if ($EndByC=="") then #check if ther is XXX.c directory
echo Sorry ther is no XXX.c folder "in" $base path
echo the XXX.c folder is necessary... (6 Replies)
Discussion started by: frenkelor
6 Replies
6. UNIX for Dummies Questions & Answers
Hi,
How do you echo something once when a find statement returns null results?
This is when using mutiple locations and mutiple arguments.
The below find command the inner loop of a nested for loop where the outter loop holds the $args and the inner loop holds the locations.
find... (2 Replies)
Discussion started by: tchoruma
2 Replies
7. IP Networking
We have a code to find the DNS entry of a host that has a trailing '-' in its url (format example: mysite-.watch.com):
if(gethostbyname_r(host,host_ent,host_buffer,host_buffer_size,&host_error)==NULL)
{
//failed
}
But when remove the '-' from the host name the code does not return... (12 Replies)
Discussion started by: uunniixx
12 Replies
8. Shell Programming and Scripting
I've got a very peculiar situation. I'm trying to find out if we can compare null fields with non-null. I've output csv files from SQL and Oracle. I need to compare each field from the files, and then find out any differences. The files usualy have over 500 fields, and send the resule to DBA.... (8 Replies)
Discussion started by: nitin
8 Replies
9. Programming
Im trying to connect to a particular IP address and I'm tying to use gethostbyaddr() and inet_addr() to do this. However, when I tried using inet_addr(), I always get a return value of 0 when I tried to connect to "172.21.16.238". Hope someone here could help me on this. I already tried using inet_... (1 Reply)
Discussion started by: soulfactory2002
1 Replies