Organizing the output of shell script into tables within the text file - shell

Question

I am working with a unix shell script which have an output of script like below code:
EVENT DATE: 2019-05-12
TrapLogId Severity EventTime Model Description
1604 [major] 05:59:50 14 Network Interface Down: service 1-16
1605 [major] 05:59:51 14 Network Interface Down: service 1-15
EVENT DATE: 2019-05-13
TrapLogId Severity EventTime Model Description
1619 [minor] 07:58:50 30 Delayed Subscriber Mapping
1620 [minor] 08:03:49 79 Failed Reload: File syntax
1621 [clear] 08:04:49 79 Failed Reload Cleared: File syntax
1622 [clear] 08:28:50 30 Delayed Subscriber Mapping Cleared
EVENT DATE: 2019-05-15
TrapLogId Severity EventTime Model Description
1627 [minor] 01:43:58 22 Misconfigured Network Awareness: 10.1.17.0/24
1628 [clear] 01:48:58 22 Misconfigured Network Awareness Cleared
Im trying to organize it into table like this format :
EVENT DATE TrapLogId Severity EventTime Model Description
2019-05-12 1604 [major] 05:59:50 14 Network Interface Down: service 1-16
2019-05-12 1605 [major] 05:59:51 14 Network Interface Down: service 1-15
2019-05-13 1619 [minor] 07:58:50 30 Delayed Subscriber Mapping
2019-05-13 1620 [minor] 08:03:49 79 Failed Reload: File syntax
2019-05-13 1621 [clear] 08:04:49 79 Failed Reload Cleared: File syntax
2019-05-13 1622 [clear] 08:28:50 30 Delayed Subscriber Mapping Cleared
2019-05-15 1627 [minor] 01:43:58 22 Misconfigured Network Awareness: 10.1.17.0/24
2019-05-15 1628 [clear] 01:48:58 22 Misconfigured Network Awareness Cleared
how to parse it ? how to export it into table using shell ?
the code i want to organize into table has:
event date 1
header
content 1
event date 2
header
content 2
etc
i want it as
event date (as part of the header) header
content 1
content 2
content 3

Answer 1

You can pipe your script to:
awk 'BEGIN {
print "EVENT DATE TrapLogId Severity EventTime Model Description"
print
}
/EVENT DATE/ {date=$3}
match($3, "[0-9][0-9]:[0-9][0-9]:[0-9][0-9]") {
printf( "%-14s%-14s%-13s%-12s%-3s", date, $1, $2, $3, $4)
for(i=1;i<=4;i++) $i=""
print
}
'

Answer 2

$ cat tst.awk
BEGIN { OFS="\t"; dateTag="EVENT DATE" }
{ gsub(/^[[:space:]]+|[[:space:]]+$/,"") }
/^[^0-9]/ {
if ( $0 ~ dateTag ) {
date = $NF
}
else if ( !doneHdr++ ) {
numCols = NF
gsub(/[[:space:]]+/,OFS)
print dateTag, $0
}
}
/^[0-9]/ {
rest = desc = $0
sub("([[:space:]]+[^[:space:]]+){"(NF-numCols)+1"}$","",rest)
sub("^([^[:space:]]+[[:space:]]+){"numCols-1"}","",desc)
gsub(/[[:space:]]+/,OFS,rest)
print date, rest, desc
}
.
$ awk -f tst.awk file | column -s$'\t' -t
EVENT DATE TrapLogId Severity EventTime Model Description
2019-05-12 1604 [major] 05:59:50 14 Network Interface Down: service 1-16
2019-05-12 1605 [major] 05:59:51 14 Network Interface Down: service 1-15
2019-05-13 1619 [minor] 07:58:50 30 Delayed Subscriber Mapping
2019-05-13 1620 [minor] 08:03:49 79 Failed Reload: File syntax
2019-05-13 1621 [clear] 08:04:49 79 Failed Reload Cleared: File syntax
2019-05-13 1622 [clear] 08:28:50 30 Delayed Subscriber Mapping Cleared
2019-05-15 1627 [minor] 01:43:58 22 Misconfigured Network Awareness: 10.1.17.0/24
2019-05-15 1628 [clear] 01:48:58 22 Misconfigured Network Awareness Cleared