SSH Scripting

SSH Scripting: Start the program with statement: #!/usr/bin/sh We can also include: store_date=`date '+%Y%m%d%H%M'` Echo: The command prints what is given on display e.g.

#!/usr/bin/sh store_date=`date '+%Y%m%d%H%M'` # My first script {Comments after #. Anything after # will not be compiled} echo "Hello World!" Output on terminal: Hello World! chmod 755 first_script chmod 755 will give read, write, and execute permission to the file `first_script`

./first_script The statement above is used to execute the file in terminal

mkdir bin mkdir is used to create a new directory

type command type will display what type of command it is

I/O Redirection Standard Output Most command line programs that display their results do so by sending their results to a facility called standard output.3 ls > file_list.txt In this example, the ls command is executed and the results are written in a file named file_list.txt. Each time the command above is repeated, file_list.txt is

overwritten (from the beginning) with the output of the commandls. If you want the new results to be appended to the file instead, use ">>" like this ls >> file_list.txt

Standard Input Many commands can accept input from a facility called standard input. sort < file_list.txt In the above example we used the sort command to process the contents of file_list.txt. The results are output on the display since the standard output is not redirected in this example. We could redirect standard output to another file like this: sort < file_list.txt > sorted_file_list.txt

PIPES

With pipes, the standard output of one command is fed into the standard input of another ls -l | less In this example, the output of the ls command is fed into less. By using this "| less" trick, you can make any command have scrolling output Command

What it does

ls -lt | head

Displays the 10 newest files in the current directory.

du | sort -nr

Displays a list of directories and how much space they consume, sorted from the largest to the smallest.

find . -type f -print | wc -l

Displays the total number of files in the current working directory and all of its

FILTERS Program

What it does

sort

Sorts standard input then outputs the sorted result on standard output.

uniq

Given a sorted stream of data from standard input, it removes

duplicate lines of data (i.e., it makes sure that every line is unique). grep

Examines each line of data it receives from standard input and outputs every line that contains a specified pattern of characters.

fmt

Reads text from standard input, then outputs formatted text on standard output.

pr

Takes text input from standard input and splits the data into pages with page breaks, headers and footers in preparation for printing.

head

Outputs the first few lines of its input. Useful for getting the header of a file.

tail

Outputs the last few lines of its input. Useful for things like getting the most recent entries from a log file.

tr

Translates characters. Can be used to perform tasks such as upper/lowercase conversions or changing line termination characters from one type to another (for example, converting DOS text files into Unix style text files).

sed

Stream editor. Can perform more sophisticated text translations than tr.

awk

An entire programming language designed for constructing filters. Extremely powerful.

Mobatch:

Purpose: To send moshell commands to several nodes in parallel.

Arguments: - The first argument is the sitefile, sitelist, or dumpdir. The sitefile is a file containing the list of sites to connect to. Each line in the sitefile contains: * The IP/DNS addresses and/or site names whose IP address are defined in the IP database. * Optionally: the uservariables/scriptingvariables to input with -v option. See example of sitefile and ipdatabase in: moshell/examples/mobatch_files/ If using the sitelist, the sites are listed on the command line and separated by commas. The dumpdir is a directory containing: * MO dumps (format: or )

* or CVs/dbdat files (format: or ) -> only supported with option "-d" - The second argument is the commmands or commandfile. See example of commands below and commandfile in moshell/examples/mobatch_files If a directory is given, then a different commandfile will be used for each node: the name of each commandfile should be .cmd or .mos the should be the same as given in the sitefile. example: node-name is rbs602 ==> commandfile should be rbs602.cmd or rbs602.mos - The third argument (logdirectory) is optional. If no logdirectory is specified, a default one will be used. Options: - t Specify the number of minutes before timing out. Set to 0 for no timeout (default=20 minutes) - p Specify the maximum number of moshell sessions that will run in parallel (default=10 parallel sessions) - i Specify the interval in seconds between spawning of each moshell session (default=0 seconds) - w Specify the interval in seconds between the checks on running sessions (default= 2.5 seconds) - v Specify moshell uservariables. Type "moshell" on its own for more info about this option. -o Print output of every moshell session both to screen and to logfile. -s Silent. No output is printed. -d Run moshell in sql mode. Only applicable when first argument is a directory ("dumpdir") -r Recursive folder search. Only applicable when first argument is a directory ("dumpdir"). Examples: mobatch -p 15 -t 60 ~/sitefiles/victoria-sites 'lt all ; get' mobatch 10.1.128.10 ./cmdfiles/kget.mos mobatch 10.1.128.10,rnc34,rbs10,mgw1.ericsson.se ./cmdfiles/kget.mos mobatch ./sitefiles/all-rbs.txt ./cmdfiles/do_healthCheck.mos mobatch -p 5 -t 1 ./sitefiles/all-rbs.txt 'cv cu ; rbs' mobatch ./sitefiles/all-rnc.txt 'lt ^utrancell ; st cell' mobatch ./sitefiles/all-bsc.txt ~/bsc-commandfiles/ mobatch -v security_method=2,sa_credential=~/sam.pbe,sa_password=oemas -p 20 ./all_mgw.txt 'hc'

mobatch -v ip_database=~/utran_network/ipdatabase ~/utran_network/ipdatabase 'lt all ; get ' mobatch modumpfolder/ 'str;std;sti;stv;inv' mobatch -r modumpfolder/ 'str;std;sti;stv;inv' mobatch -dr dbdatfolder/ dbc