03-02-2012
Ok !
I know I should post another thread, but I am just curious.
What is wrong in my previous command, if I just want to remove space in a particular field only (let' say I am not interested in finding a pattern)
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hi,
let's say $numbers = "324 350 587" an so on...
what i'm trying to do is this:
awk -v numbers="$numbers" '{if (numbers ~ /$2/) print $0, "bla bla"}' file
# file looks like this:
214 .....
215 ...
216 ....
250
...
324
325
...
350 something ...
...
587 ... (4 Replies)
Discussion started by: someone123
4 Replies
2. Shell Programming and Scripting
Hi All,
I would like my code to be able to print out the whole line if 1st field has a dot in the number. Sample input and expected output given below.
My AWK code is below but it can;t work, can any expert help me ?
Thanks in advance.
{if ($1 ~ /*\.*/) { print $0 }}
Input:
... (2 Replies)
Discussion started by: Raynon
2 Replies
3. Shell Programming and Scripting
How can i awk/sed to print the last line of an recurring pattern on the 3rd field?
Input lines:
123456.1 12 1357911 11111.1 01
123456.2 12 1357911 11111.2 02
123456.3 12 1357911 11111.3 03
123456.4 12 1357911 11111.4 04
123456.5 12 1357911 11111.5 05
246810.1 12 1357911 22222.1 01... (4 Replies)
Discussion started by: ux4me
4 Replies
4. Shell Programming and Scripting
First, thanks for the help in previous posts... couldn't have gotten where I am now without it!
So here is what I have, I use AWK to match $1 and $2 as 1 string in file1 to $1 and $2 as 1 string in file2. Now I'm wondering if I can extend this AWK command to incorporate the following:
If $1... (4 Replies)
Discussion started by: right_coaster
4 Replies
5. Shell Programming and Scripting
Hi,
I am trying with the below Perl command to print the first field when the second field matches the given pattern:
perl -lane 'open F, "< myfile"; for $i (<F>) {chomp $i; if ($F =~ /patt$/) {my $f = (split(" ", $i)); print "$f";}} close F' dummy_file
I know I can achieve the same with the... (7 Replies)
Discussion started by: royalibrahim
7 Replies
6. UNIX for Dummies Questions & Answers
Hi experts , im new to Unix,AWK ,and im just not able to get this right.
I need to match for some patterns if it matches I need to print the next few words to it.. I have only three such conditions to match… But I need to print only those words that comes after satisfying the first condition..... (2 Replies)
Discussion started by: 100bees
2 Replies
7. Shell Programming and Scripting
Hi all,
I am new to using awk and am quickly discovering what a powerful pattern-recognition tool it is. However, I have what seems like a fairly basic task that I just can't figure out how to perform in one line. I want awk to find and print all the lines in which one of multiple patterns (e.g.... (8 Replies)
Discussion started by: elgo4
8 Replies
8. Shell Programming and Scripting
Hello,
I have a text file in the below format:
Source Destination State Lag Status
CQA02W2K12pl:D:\CAQA ... (10 Replies)
Discussion started by: pocodot
10 Replies
9. Shell Programming and Scripting
data:
hello--hello1--hello2--#growncars#vello--hello3--hello4--jello#growncars#dello--gello--gelloA--gelloB#growncars#
I want to be able to print all the values that are found between the patterns "#growncars#" and the next "#growncars#" on the same line.
so the output should be:
... (8 Replies)
Discussion started by: SkySmart
8 Replies
10. Shell Programming and Scripting
Hi All,
Greetings!
I have a file of 40000+ lines with different entries, I need matching entries filterd out to their files based on first filed pattern for the matching :
For example:
All server1 entries (in field1) to come together with its path in 2nd field.
The best output I want... (9 Replies)
Discussion started by: rveri
9 Replies
LEARN ABOUT HPUX
sem_post
sem_post(2) System Calls Manual sem_post(2)
NAME
sem_post - unlock a POSIX semaphore
SYNOPSIS
DESCRIPTION
is used to post the semaphore referenced by sem. The calling thread will not return from its call to unless it can either: increment the
semaphore value, if there are no blocked threads on this semaphore; give the semaphore to a blocked thread, if there are any blocked
threads on this semaphore; or have an error condition.
If the semaphore value is < 0, the semaphore has blocked threads, waiting for it to become available (the absolute value of the semaphore's
value indicates the number of waiters at that moment). If the semaphore value is >= 0, the semaphore has no waiters.
If the semaphore has no waiters at the time its value is checked, the semaphore's value will be atomically incremented, with respect to the
checking of its value, up to its maximum value as specified by If the semaphore has waiters at the time its value is checked, the semaphore
value is not changed. Instead, the calling thread will attempt to wake up a waiter. If the semaphore has waiters having realtime priori-
ties, the thread must wake up the highest priority waiter. Otherwise the thread at the head of the channel queue is woken up.
When a waiter is successfully woken, the semaphore being posted will be given to the woken waiter. In other words, the state of the sema-
phore remains unchanged. Instead, the semaphore being posted will be inherited by the waiter being woken from this call to
If the specified semaphore referred to by sem is a named semaphore, then this semaphore must have been opened by the calling process with
The calling process must have both read and write permissions on the semaphore to perform this operation. The routine may be called asyn-
chronously, i.e. from a signal handler.
To use this function, link in the realtime library by specifying on the compiler or linker command line.
EXAMPLES
The following call to will post the semaphore sem.
RETURN VALUE
A successful call to will return 0 and the calling thread would have posted the semaphore. Otherwise, the call to will return -1 with
errno set to the appropriate value of the error condition.
ERRORS
fails and does not perform the requested operation if any of the following conditions are encountered:
[EPERM] The calling process does not have the privileges necessary to post the semaphore.
[EINVAL] The argument sem does not refer to a valid semaphore.
SEE ALSO
<semaphore.h>.
STANDARDS CONFORMANCE
sem_post(2)