I have a file with colon separated values.. the sample is attached below.
No of fields in each record/line is dependent on the value of field53.
What I need to do is to design a special filter based on specific requirement of some match of values in particular column or combination of columns.
... (2 Replies)
Dear friend,
I have a file 2 files with column wise
FILE_A
------------------------------
x,1,@
y,3,$
x,5,%
FILE_B
--------------------
x,1,@
i like to delete the all lines in FILE_A ,if first column available in FILE_B.
output (in FILE_A)
y,3,$
x,5,% (10 Replies)
Hi,
I have a requirement to display/write the 3rd column from a file based on the value in the column 3.
Ex: Data in the File (comma delimited)
ID,Value,Description
1,A,Active
1,I,Inactive
2,S,Started
1,N,None
2,C,Completed
2,F,Failed
I need to first get a list of all Unique IDs in... (7 Replies)
Hi all:
How do I use an `awk` like:
awk '{print $1 "\t" $2}' input
on the following input:
<head>medium-n</head> nmod+ns+ns-map-n
<head>future-n</head> of+n-the+ns-map-n
to achieve the following desired output:
medium-n nmod+ns+ns-map-n
future-n of+n-the+ns-map-n (3 Replies)
Hi All,
One of my source file column name RelationshipNumber. I need to filter below mentioned records in RelationshipNumber column.
RelationshipNumber:
S45678
D89763
Y09246579
A91234
If it is available in above mentioned column, then I need to print the entire line from my source... (2 Replies)
Hello, I have a script extracting columns of useful numbers from a data file, and manipulating the numbers with awk commands. I have problems with my script...
1. There are two lines assigning numbers to $BaseForAveraging. If I use the commented line (the first one) and let the second one... (9 Replies)
Hi,
I have multiple files that each contain four columns of strings:
File1:
Code:
123 abc gfh 273
456 ddff jfh 837
789 ghi u4u 395
File2:
Code:
123 abc dd fu
456 def 457 nd
891 384 djh 783
I want to compare the strings in Column 1 of File 1 with each other file and Print in... (3 Replies)
Hi,
I have a file (stats.txt) with columns like in the example below. Destination IP address, timestamp, TCP packet sequence number and packet length.
destIP time seqNo packetLength
1.2.3.4 0.01 123 500
1.2.3.5 0.03 44 1500
1.3.2.5 0.08 44 1500
1.2.3.4 0.44... (12 Replies)
Dear All,
I really enjoy your help or suggestion for resolving an issue.
Briefly, I have a file like this:
a b c
a d e
f g h
k g h
x y z
If the first column has the same ID, for example a, just remove it.
The output should be this:
f g h
k g h
x y z
I was thinking to do it... (11 Replies)
Discussion started by: giuliangiuseppe
11 Replies
LEARN ABOUT ULTRIX
fork
fork(2) System Calls Manual fork(2)Name
fork - create a new process
Syntax
#include <sys/types.h>
#include <unistd.h>
pid = fork()
pid_t pid;
Description
The system call causes creation of a new process. The new process (child process) is an exact copy of the calling process except for the
following:
o The child process has a unique process ID.
o The child process has a different parent process ID (that is, the process ID of the parent process).
o The child process has its own copy of the parent's descriptors. These descriptors reference the same underlying objects, so that, for
instance, file pointers in file objects are shared between the child and the parent, so that a on a descriptor in the child process
can affect a subsequent read or write by the parent. This descriptor copying is also used by the shell to establish standard input
and output for newly created processes as well as to set up pipes.
o The child processes resource utilizations are set to 0. For further information, see
Return Values
Upon successful completion, returns a value of 0 to the child process and returns the process ID of the child process to the parent
process. Otherwise, a value of -1 is returned to the parent process, no child process is created, and the global variable errno is set to
indicate the error.
Diagnostics
The system call fails and no child process are created under the following conditions:
[EAGAIN] The system-imposed limit {PROC_MAX} on the total number of processes under execution would be exceeded.
[EAGAIN] The system-imposed limit {CHILD_MAX} on the total number of processes under execution by a single user would be exceeded.
[ENOMEM] There is insufficient swap space for the new process.
See Alsoexecve(2), wait(2)fork(2)