How to make a loop to read the input from a file part by part?
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 (installed on centos 7). To achieve this I've created below shell script to launch the workspaces from CLI with least efforts. Please note, the ws-userlist.txt has a list of 60 users, one word per line.
Now, here, there is a limitation of above workspace creation command. It can only build maximum 25 workspaces at one execution. I wonder if there any way to make the loop read the ws-userlist.txt in such a way that it read the first 25 users and take it as input for the command and execute it. once the it get executed, loop should go back to the input file, and read next set of 25 users and execute the command. Once it get executed, loop again go back to input file, and read the last 10 usernames and run the command.
Please note, username count could vary.Sometime I may have a list of 30, sometimes it could be 55.
I've basic knowledge of shell scripting. Need your expert help on this.
Thanks in advance.
Hi,
I justs started learning Unix on my own.
I have a question:
What command can I use when I need to read in part of the file into another file?
I remember I saw it somewhere but I don't know what it is.
Thanks (3 Replies)
Hi there,
I am lil confused with the following issue.
I have a File, which has the following header: IMSHRATE_043008_101016
a sample detailed record is :9820101 A982005000CAVG030108000000000000010169000MAR 2008
9820102 MAR 2008 D030108
... (1 Reply)
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Hi Guys
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20091112091359 MED_RQACK : user_data=60173054304,100232120,20091112091359,;ask_status=0;ask_reason=OK;msg_id=20091112091319... (5 Replies)
Hi,
I have 80 large files, from which I want to get a specific value to run a Bash script. Firstly, I want to get the part of a file which contains this:
Name =A
xxxxxx
yyyyyy
zzzzzz
aaaaaa
bbbbbb
Value = 57
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I have files named with different prefixes. From each I want to extract the first line containing a specific string, and then print that line along with the prefix.
I've tried to do this with a while loop, but instead of printing the prefix I print the first line of the file twice.
Files:... (3 Replies)
Hello
let me explain senario.
there is a file which name is config and it store main software variable:
file main.conf contents:
update="1"
log_login="0"
allow_ports=""
deny_ports="21,22,23"
and there is a file which name is ports.txt
file ports.txt contents:
25,26,27
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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
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txaws-discover
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txaws-discover - txAWS AWS API discovery tool
SYNOPSIS
txaws-discover [--key KEY] [--secret SECRET] [--endpoint ENDPOINT]
DESCRIPTION
Purpose: Invoke an EC2 API method with arbitrary parameters.
--action ACTION [PARAMETERS, ...]
OPTIONS --key The AWS access key to use when making the API request.
--secret
The AWS secret key to use when making the API request.
--endpoint
The region endpoint to make the API request against.
--action
The name of the EC2 API to invoke.
-h, --help
Show help message.
Description:
The purpose of this program is to aid discovery of the EC2 API.
It can run
any EC2 API method, with arbitrary parameters.
The response received from
the backend cloud is printed to the screen, to show exactly what happened in response to the request. The --key, --secret, --end-
point and --action command-line arguments are required. If AWS_ENDPOINT, AWS_ACCESS_KEY_ID or AWS_SECRET_ACCESS_KEY environment
variables are defined the corresponding options can be omitted and the values defined in the environment variables will be used.
Any additional parameters, beyond those defined above, will be included with the request as method parameters.
EXAMPLES
The following examples omit the --key, --secret and --endpoint command-line arguments for brevity. They must be included unless
corresponding values are available from the environment.
Run the DescribeRegions method, without any optional parameters:
txaws-discover --action DescribeRegions
Run the DescribeRegions method, with an optional RegionName.0 parameter:
txaws-discover --action DescribeRegions --RegionName.0 us-west-1
txaws-discover 0.2.3 May 2012 TXAWS-DISCOVER(1)