As has been stated many times, your requirement for a CSV output file and your requirement for fixed width output fields are conflicting requirements. The fact that you have presented three different versions of your desired output (and none of them match any of your descriptions of your desired output) adds to the confusion.
Furthermore, you have shown us seven lines of input and four lines of output (not counting the added header line) with no indication of why some input lines are supposed to be removed from the output. You say you want fixed width fields, but the headers in two or your three output samples do not have the headers lined up with the corresponding field data. Your sample input seems to have constant width data for the 1st two output fields, and variable width data for the last output field, but there is no indication whether the input will be fixed length for those two fields or if that just happens to be true for the seven sample lines provided.
Some of your sample output uses a tab and 2 spaces as an output field separator, some uses just a tab, some uses a tab and 10 spaces, some uses a tab and 1 space, one uses a tab and 16 spaces, and one uses a tab and 12 spaces.
The following awk script produces fixed width output for the 1st two columns making the 1st output field 8 characters wider than the widest corresponding input field, the 2nd output field 6 characters wider than the widest corresponding input field, and a variable length final field with no padding added to the corresponding input field. (This seems to match some of the lines specified in your first sample output.) The headers are lined up with the underlying field data.
awk -F'[]_ ()]+' '
BEGIN { h[1] = "NODE"; fw[1] = 4
h[2] = "ID"; fw[2] = 2
h[3] = "IP"
}
{ d[NR, 1] = $2
if(length($2) > fw[1]) fw[1] = length($2)
d[NR, 2] = $4
if(length($4) > fw[2]) fw[2] = length($4)
d[NR, 3] = $(NF - 1)
}
END { fw[1] += 8
fw[2] += 6
printf("%-*s%-*s%s\n", fw[1], h[1], fw[2], h[2], h[3])
for(i = 1; i <= NR; i++)
printf("%-*s%-*s%s\n", fw[1], d[i, 1], fw[2], d[i, 2], d[i, 3])
}' Output.TXT
with the sample Output.TXT contents you provided in post #1 in this thread, produces the output:
NODE ID IP
U-UU-LVDT-NOD-6002 4406 1234:333:aaa:2333:3:2:333:a
U-UU-LVDT-NOD-6004 3805 1234:333:aaa:2333:3:2:333:e
U-UU-LVDT-NOD-6005 4288 1234:333:aaa:1400:3:2:333:1e
U-UU-LVDT-NOD-6006 2810 1234:333:aaa:a00:3:2:333:7a
U-UU-LVDT-NOD-6008 2803 1234:333:aaa:a00:3:2:333:66
U-UU-LVDT-NOD-9006 2320 1234:333:aaa:1400:3:2:333:22
U-UU-LVDT-NOD-9014 2095 1234:333:aaa:a00:3:2:333:d6
and with the input:
413. U-UU-LVDT-NOD-6002 [NOD_4406] macro_outcome_dist-8.0.0(v1_0_2) KK:1.2.494 (1234:333:aaa:2333:3:2:333:a)
414. U-UU-LVDT-NOD-6004 [NOD_3805] macro_outcome_dist-8.0.0(v1_0_2) KK:1.2.589 (1234:333:aaa:2333:3:2:333:e)
415. U-UU-LVDT-NOD-6005 [NOD_4288] macro_outcome_dist-8.0.0(v1_0_2) KK:1.2.349 (1234:333:aaa:1400:3:2:333:1e)
416. U-UU-LVDT-NOD-6006 [NOD_2810] macro_outcome_dist-8.0.0(v1_0_2) KK:1.2.352 (1234:333:aaa:a00:3:2:333:7a)
417. U-UU-LVDT-NOD-6008 [NOD_2803] macro_outcome_dist-8.0.0(v1_0_2) KK:1.2.613 (1234:333:aaa:a00:3:2:333:66)
418. U-UU-LVDT-NOD-9006 [NOD_2320] macro_outcome_dist-8.0.0(v1_0_2) KK:1.2.618 (1234:333:aaa:1400:3:2:333:22)
419. U-UU-LVDT-NOD-9014 [NOD_2095] macro_outcome_dist-8.0.0(v1_0_2) KK:1.2.347 (1234:333:aaa:a00:3:2:333:d6)
420. U-UU-LVDT-NOD-9014-MOD2 [NOD_2] macro_outcome_dist-8.0.0(v1_0_2) KK:1.2.347 (1234:333:aaa:a00:333:222:333:1d6)
421. U-UU-LVDT-NOD-9014-MODEL2015 [NOD_1234567890] macro_outcome_dist-8.0.0(v1_0_2) KK:1.2.347 (1:3:a:a0:3:2:3:6)
produces the output:
NODE ID IP
U-UU-LVDT-NOD-6002 4406 1234:333:aaa:2333:3:2:333:a
U-UU-LVDT-NOD-6004 3805 1234:333:aaa:2333:3:2:333:e
U-UU-LVDT-NOD-6005 4288 1234:333:aaa:1400:3:2:333:1e
U-UU-LVDT-NOD-6006 2810 1234:333:aaa:a00:3:2:333:7a
U-UU-LVDT-NOD-6008 2803 1234:333:aaa:a00:3:2:333:66
U-UU-LVDT-NOD-9006 2320 1234:333:aaa:1400:3:2:333:22
U-UU-LVDT-NOD-9014 2095 1234:333:aaa:a00:3:2:333:d6
U-UU-LVDT-NOD-9014-MOD2 2 1234:333:aaa:a00:333:222:333:1d6
U-UU-LVDT-NOD-9014-MODEL2015 1234567890 1:3:a:a0:3:2:3:6
If you want to try this script on a Solaris/SunOS system, change awk to /usr/xpg4/bin/awk .
Hopefully, this is close to what you want. If not, you MUST give us a clear specification of your input file format and a clear specification of your desired output file format or we are all wasting our time trying to help you.