topic Faulty output from bash-scripting on MDS in API / CLI Discussion

Faulty output from bash-scripting on MDS

ias_gc-dk — Wed, 04 May 2022 06:55:07 GMT

I was making a little BASH-script to export a MDS domain and during that process I needed to get the name of the virtual system, to parse into vsx_provisioning_tool, so I could get all the interfaces out in a text-file.

At first I tried defining the VS_NAME variable as, based on the MDS-Domain name, which I feed manually into the script, along with username and password:

VS_NAME=`mgmt_cli show gateways-and-servers limit 400 -u $MDS_USER -p $MDS_PASS | grep -B4 "$MDS_DOMAIN" | grep -B1 '"CpmiVsClusterNetobj"'| grep 'name: ' | awk -F: '{ print $2 }' | sed 's/"//g' | tr -d ' '`

Looking at the variable with echo, everything seems fine:

[Expert@MDS_server:0]# echo $VS_NAME
vs-MigrTestSite

But the vsx_provisioning_tool command fails:

[Expert@30000vmCPMGT04:0]# vsx_provisioning_tool -s $CMA_IP -u $MDS_USER -p $MDS_PASS -o show vd name $VS_NAME
Version ignis_main, build 996000085
not found in database.stSite

Trying to figure out what went wrong, I simply tried to execute the variable directly:

[Expert@MDS_server:0]# $VS_NAME

-bash: $'vs-MigrTestSite\r': command not found

Main question:

Why is there suddenly both $, ' and \r in the variable?

I did a workaround by setting the variable "manually", by feeding the vs-name into the script like I do with the domain-name. Then the variable is just fine.

Re: Faulty output from bash-scripting on MDS

Ofir_Shikolski — Wed, 04 May 2022 07:22:51 GMT

You might have \r at the end - try it https://www.cyberciti.biz/faq/how-to-remove-carriage-return-in-linux-or-unix/

or:

sed 's/\\r//g'

tr -d '\r'

Best option:

#!/bin/bash -f # shellcheck disable=SC2154,SC2086,SC1091,SC2016 set +x source /etc/rc.d/init.d/functions source /etc/profile.d/CP.sh source /opt/CPshared/5.0/tmp/.CPprofile.sh VS_NAME=$(echo ${mgmt_cli show gateways-and-servers limit 400 -u $MDS_USER -p $MDS_PASS | grep -B4 "$MDS_DOMAIN" | grep -B1 '"CpmiVsClusterNetobj"'| grep 'name: ' | awk -F: '{ print $2 }' | sed 's/"//g' | tr -d ' '} | tr -d '\r') vsx_provisioning_tool -s "$CMA_IP" -u "$MDS_USER" -p "$MDS_PASS" -o show vd name "$VS_NAME"

Re: Faulty output from bash-scripting on MDS

ias_gc-dk — Wed, 04 May 2022 07:30:35 GMT

The

tr -d '\r'

seems to remove both the $, the ' and the \r from the variable.

I have just never seen this behavior before. Thanks.