I am using linux termios structure to configure serial port and read the port by read function. For some reason, if I read the whole buffer, almost every time the buffer does not contain the correct reply message sequence from a device sending reply to my linux PC. So I use... (5 Replies)
How to put a line of strings (with some white spaces in between) from a file into variables?
I have tried the following codes. However, the content is cut by space (not by line)
for i in `cat ${source_file}`
do
echo $i
done
Please comment. Thanks. (2 Replies)
hello
how can i compare the content of two variables using the if or for loops.
I have 2 variables which was formed as result of commands pass into them but i want to now compare the 2 contents and echo where their is a match
for examples
variable1=`cat file2`
variable2=`cat file3`
if #... (5 Replies)
Hello,
I've created a couple of files within a list using the command "ls -ltr | tail -2 > list" These files are the newest files placed within a directory. From the "list" file, I need to place the filenames as a variable. In which the newest file will be called "new_ctrl" the older file... (4 Replies)
Greetings All,
Need some help, your input is appreciated.
Scenario:
I have five files, each has one line with comletely different content. I execute the command to combine all the five lines of content into a single file.
Goal:
I would like to take that single file that has the... (3 Replies)
I have very abstract need of "comparing two variables" and take subsequent actions.
please refer to image below
https://lh3.googleusercontent.com/-frNk5iA3q1c/TjI3lE0sWOI/AAAAAAAAAIE/fxzB1w07gas/script_block.JPG
I have a part of script which reads a file and generates variables based on... (4 Replies)
Hi,all.Well,I know someone has already asked this question before,however,It's too long before.So i post a new thread here.
Here is the issue.I have a shell script that use awk to calculate something and the script takes about 15 mins,it will use 100% CPU,and the system automatically killed the... (2 Replies)
I am in the process of developing a perl cgi page.
I had succeeded in developing the page but there are few errors/issues with the page.
description about cgi page:
My CGI page retrieves all the file names from an directory and displays the files in drop down menu for downloading the... (5 Replies)
When invoking unix commands from other third party tools (IBM ETL), we run the rm / mv commands with the folder as argument been passed. Eg
rm -rf {folder}/*
when the parameter {folder} did not pass rightly or becomes blank, the command becomes dangerous to execute rm -rf /*
How to prevent... (9 Replies)
Discussion started by: deepakwins
9 Replies
LEARN ABOUT OSX
platform::shell
platform::shell(n) Tcl Bundled Packages platform::shell(n)
__________________________________________________________________________________________________________________________________________________NAME
platform::shell - System identification support code and utilities
SYNOPSIS
package require platform::shell ?1.1.4?
platform::shell::generic shell
platform::shell::identify shell
platform::shell::platform shell
_________________________________________________________________DESCRIPTION
The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell.
This package allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only
requirement is that the other shell (identified by its path), is actually executable on the current machine.
While for most platform this means that the architecture of the interrogated shell is identical to the architecture of the running shell
this is not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run
32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers.
For applications like a code repository it is important to identify the architecture of the shell which will actually run the installed
packages, versus the architecture of the shell running the repository software.
COMMANDS
platform::shell::identify shell
This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell.
platform::shell::generic shell
This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell.
platform::shell::platform shell
This command returns the contents of tcl_platform(platform) for the specified Tcl shell.
KEYWORDS
operating system, cpu architecture, platform, architecture
platform::shell 1.1.4 platform::shell(n)