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1. The problem statement, all variables and given/known data:
I am trying to automate hadoop installation procedure using shell script. It involves go to perticular directory and add some more lines to the file /etc/sysctl.conf. How this can be done?
2. Relevant commands, code, scripts, algorithms:
Need to edit /etc/sysctl.conf while running script.
3. The attempts at a solution (include all code and scripts):
I have tried it using vi and i am not able to do this.
4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
University of Houston , Texas, USA, Dr. Deniz Gurkan,ELET6300
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The vi utility is an interactive editor, not a scripting editor. Look at the man pages for ex, ed, and sed for utilities that are intended to be used to edit files in scripts.
Another thing to consider in your script (maybe some extra credit ): Does it create a way to undo the change you are making to sysctl.conf? Consider taking a backup first...
Hello Folks,
I have a file named as date.dat present at /tmp/abc location which has following data -
20161030,20161031,20161101
I need to remove this line and replace it with something like below -
$param1,$param2,$param3
Param1, Param2 and param3 stores the date based on some calculation in... (1 Reply)
I am trying to automate hadoop installation procedure using shell script. It involves go to perticular directory and add some more lines to the file /etc/sysctl.conf. How this can be done?
Regards
Navaz (1 Reply)
i have a file called number which contains data as
1 2 3 4 5
6 7 8 9 0
9 8 7 6 5
4 3 2 1 0
0 1 2 3 4
needed a shell script to print the output as
1
7
7
1
4
and (2 Replies)
Hello,
I have a big file in wich I would like to rename inside this exactly the string '_ME' and not rename in case we have 'ABC_MELANGE'. Is there a way to do it by using a shell script?
Any tip will be apreciated.
The file is like described bellow, after using command more filename :
... (3 Replies)
Hi,
Can some one tell me if we can configure the jobs in crontab using a shell script.
I know it can be done easily by using "crontab -e", but i just want to know whether we can add a job into the crontab using a shell script.
If it can be done, plz suggest the procedure to do it.
If it... (6 Replies)
Can anyone provide me a shell script to edit a xml file and delete one entry.
To do manually i can edit(vi editor) the file and 'dd' will delete the file.But I wiluld to know if I can do with a script.
Thanks in advance
Tannu (6 Replies)
I need to edit a config file using shell script. i.e., Search with the 'key' string and edit the 'value'.
For eg: below is what I have in the config file "configfile.cfg".
Key1=OldValue1
Key2=OldValue2
I want to search for "Key1" and change "OldValue1" to "NewValue1"
Thanks for your... (7 Replies)
Hi
I need some help using shell script to edit a file.
My original file has the following format:
/txt/email/myemail.txt
/txt/email/myemail2.txt
/pdf/email/myemail.pdf
/pdf/email/myemail2.pdf
/doc/email/myemail.doc
/doc/email/myemail2.doc
I need to read each line. If the path is... (3 Replies)
What I want to do is just delete some lines from a text file, I know it's easy using copy and redirect function, but what I have to do is edit this file (delete the lines) directly, as new lines may be added to the text file during this period. Can AIX do this ?
# cat text
1:line1
2:line2... (3 Replies)