10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
Hi All,
I have below simple shell script in cloudera quick start vm cenos 6 which copy file from source to destination.
# file_copy.sh
source_dir = ${source_dir}
target = ${target_dir}
cp source_dir target
and my parameter file is like below
#parameter_file.txt
source_dir =... (4 Replies)
Discussion started by: Narasimhasss
4 Replies
2. Shell Programming and Scripting
I found something insteresting when I tested passing arguments into my scripts.
My scripts is as below.
% cat passarg.env
#!/bin/csh
echo "passarg: argv = $argv argv = $argv"
passarg1.env $*
% cat passarg1.env
#!/bin/csh
echo "passarg1: argv = $argv argvp=$argv"
set str = "test... (5 Replies)
Discussion started by: bestard
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3. Shell Programming and Scripting
Hi Gurus,
Need some help with the shell scripting here.
#!/bin/ksh
ps -ef | grep -i sample.ksh | grep -v grep > abc.txt
if
then
echo "sample.ksh is executing"
else
echo "sample.ksh is not executing"
fi (1 Reply)
Discussion started by: jayadanabalan
1 Replies
4. Shell Programming and Scripting
Hi All,
I want to pass array of argument from Java to a shell script.I can use process builder api and its exec() method to call the script,but the question is how to receive the parameter in the script.
Thanks in advance
---------- Post updated at 10:00 PM ---------- Previous update was... (1 Reply)
Discussion started by: Abhijeet_Atti
1 Replies
5. Shell Programming and Scripting
I'm pretty new to bash scripting and I've found myself writing things like this (and the same with even more nesting):
if $CATEGORIES; then
if $LABEL_SLOTS; then
$pyth "$wd/texify_grammar.py" "$input" "$texfile" "--label-slots" "--categories" "$CATEGORY_LIST"
... (9 Replies)
Discussion started by: burbly
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6. Shell Programming and Scripting
Hi, hope everyone are fine. Please find my issue below, and I request your help in the same
In a configuration file, i have a variable defined as below
TEST = 'One','Two','Three'
I am trying to pass this variable in to a sql script which is define in a pl/sql block
as follows,
In the... (1 Reply)
Discussion started by: ramakanth_burra
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7. Shell Programming and Scripting
i have to pass an integer value to shell script which will mail the values to users.
I am able to pass string values like this.
try {
String strCmdToRun1 = new String { "sh", "mail.sh","hello"};
Process p1 = rtime.exec(strCmdToRun1);
BufferedReader output... (1 Reply)
Discussion started by: naveensraj
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8. Shell Programming and Scripting
hi I am new to shell programming.....my question is while running one of my shell program it stops in between to accept input from the user and proceeds furthur after giving input....I want to know whether I can set this input through some files so that the shell acript reads the input from the... (10 Replies)
Discussion started by: santy
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9. UNIX for Dummies Questions & Answers
Hi:
I have a script called runjava:
The content ---
search=$1
dpi=$2
prefix=$3
input=$4
output=$5
java -Djava.library.path=./lib/path/Lib -classpath .:lib/path/Lib/mylib.jar myclass $search $dpi $prefix $input $output
How does myclass parse arguments ---
String searchTerm =... (3 Replies)
Discussion started by: kenpeter
3 Replies
10. Solaris
Hi,
I have a shell script Scp_1.sh for which I have to pass 2 arguments to run.
I have another script Scp_2.sh which in turns calls script Scp_1.sh inside.
How do I make Scp_1.sh script to read arguments automatically from a file, while running Scp_2.sh?
--
Weblogic Support (4 Replies)
Discussion started by: weblogicsupport
4 Replies
scala(1) USER COMMANDS scala(1)
NAME
scala - Run code in the Scala 2 language
SYNOPSIS
scala [ <option> ]... [ <torun> <argument>... ]
PARAMETERS
<compiler-option>
Any scalac option. See scalac(1).
-howtorun:<how>
How to execute <torun>, if it is present. Options for <how> are guess (the default), script, and object.
-i Requests that a file be pre-loaded. It is only meaningful for interactive shells.
-e Requests that its argument be executed as Scala code.
-savecompiled
Save this compiled version of scripts in order to speed up later executions of the same script. When running a script, save the
compiled version of in a file with the same name as the script but with an extension of .jar. On subsequent runs of the same
script, the pre-compiled .jar file will be used if it is newer than the script file.
-nocompdaemon
Do not use the fsc offline compiler.
-D<property=value>
Set a Java system property. If no value is specified, then the property is set to the empty string.
<torun>
A top-level object or a script file to run.
<argument>
An arguments to pass to <torun>.
DESCRIPTION
The scala utility runs Scala code using a Java runtime environment. The Scala code to run is specified in one of three ways:
1. With no arguments specified, a Scala shell starts and reads commands interactively.
2. With -howtorun:object specified, the fully qualified name of a top-level Scala object may be specified. The object should previ-
ously have been compiled using scalac(1).
3. With -howtorun:script specified, a file containing Scala code may be specified.
If -howtorun: is left as the default (guess), then the scala command will check whether a file of the specified name exists. If it does,
then it will treat it as a script file; if it does not, then it will treat it as the name of an object.
In all three cases, arbitrary scalac options may be specified. The most common option is to specify a classpath with -classpath, but see
the scalac(1) page for full details.
If an object is specified to run, then that object must be a top-level Scala object with the specified name. The object must define a
method main with the following signature:
def main(args: Array[String]): Unit
The method must return a Unit value, and it must accept a String array as a parameter. All arguments specified on the command line will be
passed as arguments to the main method.
If a script file is specified to run, then the file is read and all Scala statements and declarations in the file are processed in order.
Any arguments specified will be available via the argsvariable.
Script files may have an optional header that is ignored if present. There are two ways to format the header: either beginning with #! and
ending with !#, or beginning with ::#! and ending with ::!#.
Such a header must have each header boundary start at the beginning of a line. Headers can be used to make stand-alone script files, as
shown in the examples below.
If scala is run from an sbaz(1) directory, then it will add to its classpath any jars installed in the lib directory of the sbaz directory.
Additionally, if no -classpath option is specified, then scala will add ".", the current directory, to the end of the classpath.
OPTIONS
If any compiler options are specified, they must be first in the command line and must be followed by a bare hypen ("-") character. If no
arguments are specified after the optional compiler arguments, then an interactive Scala shell is started. Otherwise, either a script file
is run, or a pre-compiled Scala object is run. It is possible to distinguish the last two cases by using an explicit -object or -script
flag, but usually the program can guess correctly.
ENVIRONMENT
JAVACMD
Specify the java command to be used for running the Scala code. Arguments may be specified as part of the environment variable;
spaces, quotation marks, etc., will be passed directly to the shell for expansion.
JAVA_HOME
Specify JDK/JRE home directory. This directory is used to locate the java command unless JAVACMD variable set.
JAVA_OPTS
Specify the options to be passed to the java command defined by JAVACMD.
With Java 1.5 (or newer) one may for example configure the memory usage of the JVM as follows: JAVA_OPTS="-Xmx512M -Xms16M -Xss16M"
With GNU Java one may configure the memory usage of the GIJ as follows: JAVA_OPTS="--mx512m --ms16m"
EXAMPLES
Here are some examples of running Scala code:
Execute a Scala program generated in the current directory
scala hello.HelloWorld
Execute a Scala program generated in a user-defined directory classes
scala -classpath classes hello.HelloWorld
Execute a Scala program using a user-defined java command
env JAVACMD=/usr/local/bin/cacao scala -classpath classes hello.HelloWorld
Execute a Scala program using JVM options
env JAVACMD=java JAVA_OPTS="-Dmsg=hello -enableassertions" scala -classpath classes hello.HelloWorld
Here is a complete Scala script for Unix:
#!/bin/sh
exec scala "$0" "$@"
!#
Console.println("Hello, world!")
argv.toList foreach Console.println
Here is a complete Scala script for MS Windows:
::#!
@echo off
call scala %0 %*
goto :eof
::!#
Console.println("Hello, world!")
argv.toList foreach Console.println
If you want to use the compilation cache to speed up multiple executions of the script, then add -savecompiled to the scala command:
#!/bin/sh
exec scala -savecompiled "$0" "$@"
!#
Console.println("Hello, world!")
argv.toList foreach Console.println
EXIT STATUS
The scala command returns a zero exit status if it succeeds. Non zero is returned in case of any error. If a script or top-level object is
executed and returns a value, then that return value is passed on to scala.
AUTHOR
Written by Martin Odersky and other members of the Scala team.
REPORTING BUGS
Report bugs to http://lampsvn.epfl.ch/trac/scala.
COPYRIGHT
This is open-source software, available to you under a BSD-like license. See accomponying "copyright" or "LICENSE" file for copying condi-
tions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
SEE ALSO
fsc(1), sbaz(1), scalac(1), scaladoc(1), scalap(1)
version 0.5 April 18, 2007 scala(1)