Printing the output of sed using a loop Post: 303029057

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Top Forums Shell Programming and Scripting Printing the output of sed using a loop Post 303029057 by RudiC on Sunday 20th of January 2019 06:40:33 AM

01-20-2019

Registered User

Based on a few assumptions on the structure of your input file, like
- the numerical "detection type" is introduced by the string cn2=, up to four digits, and terminated by a space char.
- there's no more than one time stamp per line, introduced by the partial string rt=, 10 digits long

here's an awk proposal, working on a mock up input file, that might satisfy your request:

Code:

awk '
BEGIN                   {HRago = srand() - 3600                                                                                 # srand is seeded from the clock, and returns that value
                         for (DMX = n = split ("0 16 272 512 768 2048 2304 1024 1280", DETTYPE); n; n--) CNT[DETTYPE[n]] = 0;   # det. type, and counter (indexed by det type) arrays
                         TIMPAT = "rt=[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]"                                       # define epoch time pattern with introducing string
                        }
match ($0, TIMPAT)      {if ((substr($0, RSTART+3, 10) > HRago                  ) &&                                            # epoch time greater than one hour ago AND
                             (match ($0, /cn2=[0-9]* /)                         ) &&                                            # det.type introducer found AND
                             ((DT = substr($0, RSTART+4, RLENGTH-5)) in CNT     )       ) CNT[DT]++                             # det type known in counter array --> incr. counter
                        }
END                     {for (i=1; i<=DMX; i++) print "Detection type:", DETTYPE[i], ", count:", CNT[DETTYPE[i]]                # output detection types and counters
                        }
' file
Detection type: 0 , count: 1
Detection type: 16 , count: 0
Detection type: 272 , count: 0
Detection type: 512 , count: 1
Detection type: 768 , count: 1
Detection type: 2048 , count: 0
Detection type: 2304 , count: 0
Detection type: 1024 , count: 0
Detection type: 1280 , count: 0

Last edited by RudiC; 01-20-2019 at 08:33 AM..

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LEARN ABOUT SUSE

rbash

RBASH(1)						      General Commands Manual							  RBASH(1)

NAME

       rbash - restricted bash, see bash(1)

RESTRICTED SHELL

       If  bash  is  started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted.  A restricted shell is
       used to set up an environment more controlled than the standard shell.  It behaves identically to bash with the exception that the  follow-
       ing are disallowed or not performed:

       o      changing directories with cd

       o      setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV

       o      specifying command names containing /

       o      specifying a filename containing a / as an argument to the .  builtin command

       o      specifying a filename containing a slash as an argument to the -p option to the hash builtin command

       o      importing function definitions from the shell environment at startup

       o      parsing the value of SHELLOPTS from the shell environment at startup

       o      redirecting output using the >, >|, <>, >&, &>, and >> redirection operators

       o      using the exec builtin command to replace the shell with another command

       o      adding or deleting builtin commands with the -f and -d options to the enable builtin command

       o      using the enable builtin command to enable disabled shell builtins

       o      specifying the -p option to the command builtin command

       o      turning off restricted mode with set +r or set +o restricted.

       These restrictions are enforced after any startup files are read.

       When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.

SEE ALSO

       bash(1)

GNU Bash-4.0							    2004 Apr 20 							  RBASH(1)

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