Ok, I'm stumped and can't seem to find relevant info.
(I'm not even sure, I might have asked something similar before.):
I'm trying to use shell scripting/UNIX commands to extract URLs from a fairly large web page, with a view to ultimately wrapping this in PHP with exec() and including the... (2 Replies)
We have the following statement working in CGYWIN, but when we move the program to Solaris 10 it fails.
x=`echo "ABC196925XYZ" | grep -o --only-matching "\{6\}"`
How can we use AWK or SED to extract only the number from the string?
The following outputs the entire string. We only want... (5 Replies)
Hi All,
I am trying to extract lines bsed on pattern matching../mp straight-flow/
Extracted output should be saved in meta_string , but the code is not working in that manner,saving repeated lines. can anyone please suggest where am i going wrong.
/mp straight-flow/ {... (6 Replies)
Hi All
I'm struggling a bit here :(
I need a way of joining lines contained in a text file. I've seen numerous SED and AWK examples and none of them seem to be working for me.
The text file has 4 lines:
DELL1427
DOC
30189342
79
Now bear with me on this one as I'm actually... (4 Replies)
Hi,
I have following path:
set file_path = D:/forums/prac/somedir/new1/file1.txt
or set file_path = E:/new/forums1/prac/somedir/new2/file2.txt
I need to grep "somedir" from file path. In this case preceding directory "prac" remains same for both the paths, but directories preceding... (7 Replies)
Hi guys!
I'm new to scripting and I need to write a script in awk.
Here is example of file on which I'm working
ATOM 4688 HG1 PRO A 322 18.080 59.680 137.020 1.00 0.00
ATOM 4689 HG2 PRO A 322 18.850 61.220 137.010 1.00 0.00
ATOM 4690 CD ... (18 Replies)
Hello,
I was wondering how is it possible if I use this command:
awk 'NR >= 998 && NR <= 1000' file.txtTo exit after parsing the 1000th line ( last line targeted) ???
I observed that when executing this command for a large file, if the range of lines is at the beginning of the file it is... (2 Replies)
Hi,
I need to get specific parts in a large file.
I need to:
Get a line containing an IP address, and read from there to another line saying ***SNMP-END***
So, I have the start and the end well defined, but the problem is that apparently the awk command using the -F option doesn't work... (17 Replies)
Discussion started by: ocramas
17 Replies
LEARN ABOUT BSD
xargs
XARGS(1) General Commands Manual XARGS(1)NAME
xargs - construct argument list(s) and execute utility
SYNOPSIS
xargs [ -t ][[ -x ] -n number ][ -s size ][ utility [ arguments... ]]
DESCRIPTION
The xargs utility reads space, tab, newline and end-of-file delimited arguments from the standard input and executes the specified utility
with them as arguments.
The utility and any arguments specified on the command line are given to the utility upon each invocation, followed by some number of the
arguments read from standard input. The utility is repeatedly executed until standard input is exhausted.
Spaces, tabs and newlines may be embedded in arguments using single (`` ' '') or double (``"'') quotes or backslashes (``''). Single
quotes escape all non-single quote characters, excluding newlines, up to the matching single quote. Double quotes escape all non-double
quote characters, excluding newlines, up to the matching double quote. Any single character, including newlines, may be escaped by a back-
slash.
The options are as follows:
-n number Set the maximum number of arguments taken from standard input for each invocation of the utility. An invocation of utility will
use less than number standard input arguments if the number of bytes accumulated (see the s option) exceeds the specified size or
there are fewer than number arguments remaining for the last invocation of utility. The current default value for number is
5000.
-s size Set the maximum number of bytes for the command line length provided to utility. The sum of the length of the utility name and
the arguments passed to utility (including /dev/null terminators) will be less than or equal to this number. The current default
value for size is ARG_MAX - 2048.
-t Echo the command to be executed to standard error immediately before it is executed.
-x Force xargs to terminate immediately if a command line containing number arguments will not fit in the specified (or default)
command line length.
If no utility is specified, echo(1) is used.
Undefined behavior may occur if utility reads from the standard input.
The xargs utility exits immediately (without processing any further input) if a command line cannot be assembled, utility cannot be
invoked, an invocation of the utility is terminated by a signal or an invocation of the utility exits with a value of 255.
The xargs utility exits with a value of 0 if no error occurs. If utility cannot be invoked, xargs exits with a value of 127. If any other
error occurs, xargs exits with a value of 1.
SEE ALSO echo(1), find(1)STANDARDS
The xargs utility is expected to be IEEE Std 1003.2("POSIX") compliant.
June 6, 1993 XARGS(1)