You're close, but shell variables aren't known in an awk script unless you explicitly pass them in. And, in awk$var prints the field named by the field number contained in the awk variable var (and since var hasn't been defined in your awk script it expanded to $0 which is the contents of the current line). Try:
This User Gave Thanks to Don Cragun For This Post:
I'm having problems since few days ago, and i'm not able to make it works with a simple awk+grep script (or other way to do this).
For example, i have a input file1.txt:
cat inputfile1.txt
218299910417
1172051195
1172070231
1172073514
1183135117
1183135118
1183135119
1281440202
... (3 Replies)
I need only those records which has $2 equal to "DEF" independent of case (i.e upper or lower)
nawk -F"," '$2 ~ //{print $0}' file
This returns 3rd record also which i dont want
I tried this but this doesnt work as expected.
nawk -F"," '$2 == ""{print $0}' file
i dont... (3 Replies)
Hi, I am new to this unix world.
Any ways, I would like to write a shell script that can print the file name.
Ex :
directory will have 5 files with different name.No matter what are contents are.
Now I need to find the file which will have particular name (sub string ).Please do not... (5 Replies)
Hi,
This is most likely a dumb question but I could not find answer to it elsewhere.
I'm building a simple menu with case /esac and want to read user's input:
Please enter XYZ ; read XYZ
How do I take the value of XYZ and insert it as a variable $XYZ in file file.txt ?
I may need to... (9 Replies)
Hello,
I have a huge file, I am currently using while loop to read and do some calculation on it, but it is taking a lot of time.
I want to use AWK to read and do those calculations.
Please suggest.
currently doing:
cat input2 | while read var1
do
num=`echo $var1 | awk... (6 Replies)
Hello,
I have a set of files Xfile0001 - Xfile0021, and the content of this files (one at a time) needs to be printed between some line (lines start with word "Generated") that I am extracting from another file called file7.txt and all the output goes into output.txt. First I tried creating a for... (5 Replies)
Hi All,
Do we know how to read input file within awk script and send output toanother log file. All this needs to be in awk script, not in command line. I am running this awk through crontab.
Cat my.awk
#!/bin/awk -f
function test(var){
some code}
{
}
END
{
print"test code"
} (5 Replies)
I have a file1.txt with several 100k lines, each of which has a column 9 containing one of 60 "label" identifiers. Using an labels.txt file containing a list of labels, I'd like to extract 200 random lines from file1.txt for each of the labels in index.txt.
Using a contrived mini-example:
$ cat... (8 Replies)
Hi All,
We've a VDI infrastructure in AWS (AWS workspaces) and we're planning to automate the process of provisioning workspaces. Instead of going to GUI console, and launching workspaces by selecting individual users is little time consuming. Thus, I want to create them in bunches from AWS CLI... (6 Replies)
I'm working on Aix 6.1 and using ksh shell.
The below works fine on Linux bash or ksh shell .
while IFS= read -r dirpath ; do
echo "Hi"
done <<<"$var"
However, any such while loop that reads the input from file or variable using <<< fails on Aix system with the below error:
Below... (2 Replies)
Discussion started by: mohtashims
2 Replies
LEARN ABOUT CENTOS
rhino
RHINO(1) General Commands Manual RHINO(1)NAME
rhino - invokes the JavaScript shell for running scripts in batch mode or interactive
SYNOPSIS
rhino [options] script_filename_or_url [script_arguments]
DESCRIPTION
This manual page documents briefly the rhino command.
rhino is a start script for the rhino JavaScript shell which provides a simple way to run scripts in batch mode or an interactive environ-
ment for exploratory programming.
OPTIONS -e script_source
Executes script_source as a JavaScript script.
-f script_filename_or_url
Reads script_filename_or_url content and execute it as a JavaScript script.
-opt, -O optLevel
Optimizes at level optLevel, which must be an integer between 0 and 9.
-version versionNumber
Specifies the language version to compile with. The string versionNumber must be one of 100, 110, 120, 130, or 140. See JavaScript
Language Versions for more information on language versions.
PREDEFINED PROPERTIES
Scripts executing in the shell have access to some additional properties of the top-level object.
arguments
The arguments object is an array containing the strings of all the arguments given at the command line when the shell was invoked.
help() Executing the help function will print usage and help messages.
defineClass(className)
Define an extension using the Java class named with the string argument className. Uses ScriptableObject.defineClass() to define the
extension.
deserialize(filename)
Restore from the specified file an object previously written by a call to serialize.
load([filename,...])
Load JavaScript source files named by string arguments. If multiple arguments are given, each file is read in and executed in turn.
loadClass(className)
Load and execute the class named by the string argument className. The class must be a class that implements the Script interface,
as will any script compiled by jsc.
print([expr...])
Evaluate and print expressions. Evaluates each expression, converts the result to a string, and prints it.
readFile(path[,characterCoding])
Read given file and convert its bytes to a string using the specified character coding or default character coding if explicit cod-
ing argument is not given.
readUrl(url[,characterCoding])
Open an input connection to the given string url, read all its bytes and convert them to a string using the specified character cod-
ing or default character coding if explicit coding argument is not given.
runCommand(commandName,[arg,...][options])
Execute the specified command with the given argument and options as a separate process and return the exit status of the process.
For details, see JavaDoc for org.mozilla.javascript.tools.shell.Global#runCommand.
serialize(object,filename)
Serialize the given object to the specified file.
spawn(functionOrScript)
Run the given function or script in a different thread.
sync(function)
creates a synchronized function (in the sense of a Java synchronized method) from an existing function. The new function synchro-
nizes on the this object of its invocation.
quit() Quit shell. The shell will also quit in interactive mode if an end-of-file character is typed at the prompt.
version([number])
Get or set JavaScript version number. If no argument is supplied, the current version number is returned. If an argument is sup-
plied, it is expected to be one of 100, 110, 120, 130, or 140 to indicate JavaScript version 1.0, 1.1, 1.2, 1.3, or 1.4 respec-
tively.
SEE ALSO
The online documentation under http://www.mozilla.org/rhino/shell.html <http://www.mozilla.org/rhino/shell.html>
AUTHOR
This manual page was written by Wolfgang Baer <WBaer@gmx.de>.
February 12, 2005 RHINO(1)