CODEWITHSUNDEEP
bashshell
Vish
Vish

Reputation: 16

Script output formatting

I am having a script output data that needs to be formatted, I have a output like below.

UNIT : ABC
xxxx
xxxx
Free memory : xxx 70

UNIT : DEF
xxxx
xxxx
Free memory : xxx 60

I need to capture free memory data for individual units but I am unable to print that out, any suggestions ? There are some 25 units & I have to print free memories of all of them individually.

Here "xxxxx" is some random data which is irrelevant for me, what I want is to print free memory for each unit, something like below format :slight_smile

ABC 70
DEF 60

and so on.

Upvotes: 0

Views: 119

Answers (4)

LeadingEdger
LeadingEdger

Reputation: 704

Just send your script's output into this awk command:

Your_Script | awk '
/^UNIT/ {printf $NF" "}
/^Free memory/ {print $NF}
'

Upvotes: 0

Jetchisel
Jetchisel

Reputation: 7781

With GNU ed

If it is a file.

ed -s file.txt < script.ed

If the output is coming from a script, requires a shell that supports <() Process Substitution.

ed -s <(cat file.txt) < script.ed
  • Replace the cat part with the output/command from your script.

The script.ed script.

v/^UNIT\|^Free/d
,s/.*[[:space:]]\(.*\)$/\1/g
,s/$/ /
g/./j
,s/ $//
,p
Q

Upvotes: 0

M. Nejat Aydin
M. Nejat Aydin

Reputation: 10103

Using GNU sed

/path/to/your/script |
sed -n -E '/^UNIT\s*:\s*/{s///;h}; /^Free memory\s*:.*\s([0-9]+)$/{s//\1/;H;g;s/\n/ /p}'

Upvotes: 0

Jithin Scaria
Jithin Scaria

Reputation: 1309

Let the file output.txt contains the output,

Then Assuming, the order of UNIT and Free memory doesn't change in the output, we could try the following.

cat output.txt | grep -Ea 'UNIT|Free memory' | sed -e ':a;N;s/\nFree/ Free/g' | awk '{print $3" "$8}'

Output:

ABC 70
DEF 60

Explanation:

  • grep -Ea 'UNIT|Free memory' : This will grep out only the lines contains either UNIT or Free memory.
  • sed -e ':a;N;s/\nFree/ Free/g' : This will loop through each line, and wherever new line starts with Free, the new line will replace with a space. Hence we will get UNIT and Free memory in a single line.
  • awk '{print $3" "$8}' : This further cut out the positions of UNIT name and Free memory value.

Hope it helps.

Upvotes: 1

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