there is a autosys job, whicn has 3 jobs init. all 3 jobs call a common script and there 3 diffrent profiles one for each of them.these 3 jobs called from 3 different machines
.Each profile has got a varialble and this varible contains a fixed value specfic to the machine.
In the comomna scirpt i wnt to execute code based on teh value in the variable passed.
If the variable matches the value in the profile of a machine the code for that machine will be executed.how can I check if the varialbe received in the common script is also present in the profile of the machine.
Thanks
Old fashioned way I fall back on (in sh) is :
if [ -z "$VarToCheck" ] ; then
echo "Variable not set"
fi
There is probably a more correct way though. Do you care if a variable exists but has 0 length?
Related
I'm running a script (bitbucket_pipelines.yml) and on one of the steps I need to know the current branch name, How can I get it?
I saw there is a predefined BITBUCKET_BRANCH variable, but I'm having troubles to print it so I can see its content.
I tried to do:
...
step:
script:
- echo $BITBUCKET_BRANCH
but when pipelines runs all I see is
echo $BITBUCKET_BRANCH
How can I really see the content of this variable?
I found that Bb Pipelines are sometimes picky when dealing with variables. Try changing this to echo "$BITBUCKET_BRANCH". Also, enclosing the whole line in single quotes might help.
#Shvalb, the question should be how to display the value of a variable in bitbucket pipeline.
I deal with bitbucket support on this matter before.
I want to echo a repo/pipeline variable to see the value and it is not showing correctly.
In my case, it was my repo variable conflict with my deployment/pipeline variable. However, from the support, I understand bitbucket is using search and replace the screen value to "hide" the actual value of the variable with direct echo.
in order to see the value, you can use
echo $VAR > /tmpfile
cat /tmpfile
It was the trick I used before but I am not sure whether it will still work.
So I'll start with the fact that I'm relatively new to linux scripting, so if I am going about it the wrong way, let me know.
I am creating a script that is meant to copy logs from many different hosts onto the local machine depending on user input.
One of the functions I am writing requires the use of scp. Each time you use the scp command at a particular remote host, you have to enter your password. So to save time for the user, I want to copy any file that the particular host may have on it that the user wants.
I know I can do this using scp user#Remoteipaddress:'directory/file1 directory/file2' local/machine/directory
I have it running (what I feel is too many, so if there is a better way let me know) a bunch of loops.
The portion with the scp command is my main issue. Code looks fine if I quote it and echo it. I can even copy and paste the echoed result and it will work, but if I let the script do it I receive bash: -c: line 0: unexpected EOF while looking for matching `''
edit: $app is a static number created in another portion of program
added a couple things that seemed to be missing. I'm trying to piece together from multiple areas of program without making it more messy than it already is
#assigns different remote host paths do array variable
until [ $scriptCounter == $app ]
do
scpScript[$scriptCounter]="user#${ipAddress[$ipCounter]}:'"
((++ipCounter))
((++scriptCounter))
done
#$app value gets set by another function - typically 3 if that matters
scpCount=0
DayCounter=0
ipScriptCounter=0
until [ $Count == $app ]
do
((++scpCount))
mkdir ~/MyDocuments/Logs/$3/app$scpCount
echo "Creating ~/MyDocuments/Logs/${3}/app${scpCount}"
#there is one log for each day, $totalDiffDays is the total amount of days
#$DayCounter is set and gets marked up everytime it goes through loop until
it matches total days
until [ $DayCounter == $totalDiffDays ]
do
scpPath[$DayCounter]="/var/log/docker/theLog*${datePath[$DayCounter]}*"
noSpaceSCP[$DayCounter]=${scpPath[$DayCounter]//[[:blank:]]/}
((++DayCounter))
done
fullSCPscript[$scpCount]="${scpScript[$ipScriptCounter]}${noSpaceSCP[*]}'"
#this portion I have an issue with.
scp ${fullSCPscript[$scpCount]} ~/MyDocuments/Logs/$3/app$scpCount
#this ups the array counter for my ipaddress array
((++ipScriptCounter))
#How im zeroing out the $DayCounter so it will run through again for other
nodes but with different IP address
until [ $DayCounter == "0" ]
do
((--DayCounter))
done
done
example output i get when I echo the line with the scp command
scp user#10.10.200.100:'/var/log/docker/theLog*2018-07-26* /var/log/docker/theLog*2018-07-27*' /home/mobaxterm/MyDocuments/Logs/care3/app1
I'm sorry that this looks messy, but overall I'm trying to build the directory that its grabbing the log from, and if there are multiple days, just add onto the scp command. I'm trying to do this as opposed to running a whole separate command to save the user from entering their password 5 times if they need 5 files. Instead they would only have to enter it once.
Bash question!
so I have n arguments, and for each argument I'd like to to do a for loop and assign variables to hold characteristics of each argument. for example I have a script that runs in a continuous while loop and looks at user activity in my network... this is a simple outline of what my problems are:
while true
for argument
do
# build an array to hold times
"$user"_times =()
# set a boolean value
"$user"_boolean=true
if [ ""$user"_boolean" = true ]
then
echo $user logged on
"$user"_times+=( timestamp )
fi
done
done
exit 0
the real script will look at user activity, update the boolean based on certain user behavior, and log some user activity info in the array- but I'm trying to get this to work so I can add the easy meat. what should the syntax be? I'm having a hard time making the variables work.
Since bash doesn't support hash/maps, I'd consider perl/python to store user activity against their hash id. You also have access to vectors for variable sized activity details, eg a hash of userid's containing a vector of activities.
Python script to list users and groups
is it possible to use a function, which checks if the given directory/file exists and assigns the boolean return value to a variable?
I want to execute a part of my manifest only if a file/directory doesn't exist.
Greetings
You will have to create a custom fact to get that piece of information from the agent to your master. The easiest way to do this is an external fact. On Linux, this scriptlet would suffice.
#!/bin/sh
[ -d /the/directory/in/question ] || exit 0
echo 'my_directory=present'
You can then use the $my_directory fact in your manifests. It's missing if the directory is not yet there, and otherwise has the value 'present'.
I have a cron task that runs periodically. This task depends on a condition to be valid in order to complete its processing. In case it matters this condition is just a SELECT for specific records in the database. If the condition is not satisfied (i.e the SELECT does not return the result set expected) then the script exits immediately.
This is bad as the condition would be valid soon enough (don't know how soon but it will be valid due to the run of another script).
So I would like somehow to make the script more robust. I thought of 2 solutions:
Put a while loop and sleep constantly until the condition is
valid. This should work but it has the downside that once the script
is in the loop, it is out of control. So I though to additionally
after waking up to check is a specific file exists. If it does it
"understands" that the user wants to "force" stop it.
Once the script figures out that the condition is not valid yet it
appends a script in crontab and stops. That seconds script
continually polls for the condition and if the condition is valid
then restart the first script to restart its processing. This solution to me it seems to work but I am not sure if it is a good solution. E.g. perhaps programatically modifying the crontab is a bad idea?
Anyway, I thought that perhaps this problem is common and could have a standard solution, much better than the 2 I came up with. Does anyone have a better proposal? Which from my ideas would be best? I am not very experienced with cron tasks so there could be things/problems I could be overseeing.
instead of programmatically appending the crontab, you might want to consider using at to schedule the job to run again at some time in the future. If the script determines that it cannot do its job now, it can simply schedule itself to run again a few minutes (or a few hours, as it may) later by way of an at command.
Following up from our conversation in comments, you can take advantage of conditional execution in a cron entry. Supposing you want to branch based on time of day, you might use the output from date.
For example: this would always invoke the first command, then invoke the second command only if the clock hour is currently 11:
echo 'ScriptA running' ; [ $(date +%H) == 11 ] && echo 'ScriptB running'
More examples!
To check the return value from the first command:
echo 'ScriptA' ; [ $? == 0 ] echo 'ScriptB'
To instead check the STDOUT, you can use as colon as a noop and branch by capturing output with the same $() construct we used with date:
: ; [ $(echo 'ScriptA') == 'ScriptA' ] && echo 'ScriptB'
One downside on the last example: STDOUT from the first command won't be printed to the console. You could capture it to a variable which you echo out, or write it to a file with tee, if that's important.