Format text with sed or awk

Am trying to format the below actual output to get in the same line for each disks

0. ct1d0 <INTEL-ADDPF2KX076T9S-2CV1-6.19TB>
   /pci@4,0/pci8086,347c@4/e,487c@0/disk@1
   /dev/chassis/SYS/DBP/HDD0/NVME/disk
1. c2t1d0 <INTEL-ADDPF2KX076T9S-2CV1-6.19TB>
   /pci@4,0/pci8086,347d@5/apci108e,487c@0/disk@1
   /dev/chassis/DBP/HDD1/NVME/disk
2. c3t0d0 <ATA-Min_5300_MAAAD-D3MU-223.57GB>
   /pci@0,0/pci8e,4872@17/disk@0,0
   /dev/chassis/MB/SSDR0/SSD0/disk
3. c4t2d0 <ATA-Min_5300_MTFD-D3MU-223.57GB>
   /pci@0,0/pci08e,4872@17/disk@2,0
   /dev/chassis/SYS/MB/SSDR0/SSD1/disk

Trying to get the expected output like below,

0. ct1d0 <INTEL-ADDPF2KX076T9S-2CV1-6.19TB>| /pci@4,0/pci8086,347c@4/e,487c@0/disk@1| /dev/chassis/SYS/DBP/HDD0/NVME/disk|
1. c2t1d0 <INTEL-ADDPF2KX076T9S-2CV1-6.19TB>| /pci@4,0/pci8086,347d@5/apci108e,487c@0/disk@1| /dev/chassis/DBP/HDD1/NVME/disk|
2. c3t0d0 <ATA-Min_5300_MAAAD-D3MU-223.57GB>| /pci@0,0/pci108e,4872@17/disk@0,0| /dev/chassis/MB/SSDR0/SSD0/disk|
3. c4t2d0 <ATA-Min_5300_MTFD-D3MU-223.57GB>| /pci@0,0/pci108e,4872@17/disk@2,0| /dev/chassis/SYS/MB/SSDR0/SSD1/disk|

I tried with below,

cat actual_output | tr -s " " | tr "\n" "|"

Which is resulting all in single line,

0. ct1d0 <INTEL-ADDPF2KX076T9S-2CV1-6.19TB>| /pci@4,0/pci8086,347c@4/e,487c@0/disk@1| /dev/chassis/SYS/DBP/HDD0/NVME/disk|1. c2t1d0 <INTEL-ADDPF2KX076T9S-2CV1-6.19TB>| /pci@4,0/pci8086,347d@5/apci108e,487c@0/disk@1| /dev/chassis/DBP/HDD1/NVME/disk|2. c3t0d0 <ATA-Micron_5300_MAAAD-D3MU-223.57GB>| /pci@0,0/pci108e,4872@17/disk@0,0| /dev/chassis/MB/SSDR0/SSD0/disk|3. c4t2d0 <ATA-Micron_5300_MTFD-D3MU-223.57GB>| /pci@0,0/pci108e,4872@17/disk@2,0| /dev/chassis/SYS/MB/SSDR0/SSD1/disk|

Now need to replace 0. until next 1. contents with newline(\n), so that will get expected result. Do we have any regex to do the same?

TIA

Solution

Modifying one data set to have only 2 lines:

$ cat disk.dat
0. ct1d0 <INTEL-ADDPF2KX076T9S-2CV1-6.19TB>
   /pci@4,0/pci8086,347c@4/e,487c@0/disk@1
   /dev/chassis/SYS/DBP/HDD0/NVME/disk
1. c2t1d0 <INTEL-ADDPF2KX076T9S-2CV1-6.19TB>
   /pci@4,0/pci8086,347d@5/apci108e,487c@0/disk@1
   /dev/chassis/DBP/HDD1/NVME/disk
2. c3t0d0 <ATA-Min_5300_MAAAD-D3MU-223.57GB>
   /pci@0,0/pci8e,4872@17/disk@0,0
3. c4t2d0 <ATA-Min_5300_MTFD-D3MU-223.57GB>
   /pci@0,0/pci08e,4872@17/disk@2,0
   /dev/chassis/SYS/MB/SSDR0/SSD1/disk

Extending OP's current code:

cat disk.dat | tr -s " " | tr "\n" "|" | sed -E "s/\|([0-9])/\|\n\1/g; s/$/\n/"

Where:

the 1st half of the sed script places a \n between a pipe (|) and a number ([0-9])
the 2nd half of the sed script adds a \n at the end of the line

An alternative awk idea:

awk -F'.' '                                        # input field delimiter is a period
           { sub(/[[:space:]]+/,"",$1) }           # remove leading white space from 1st field
($1+0)==$1 { if (NR>1) print ""; pfx="" }          # if 1st field is numeric; if beyond 1st row then terminate previous line of output; reset prefix to empty string
           { printf "%s%s|", pfx, $0; pfx=" " }    # print prefix plus current line; reset prefix to a single space
END        { if (NR>=1) print "" }                 # if we had at least one row of input then terminate previous line of output
' disk.dat

Both of these generate:

0. ct1d0 <INTEL-ADDPF2KX076T9S-2CV1-6.19TB>| /pci@4,0/pci8086,347c@4/e,487c@0/disk@1| /dev/chassis/SYS/DBP/HDD0/NVME/disk|
1. c2t1d0 <INTEL-ADDPF2KX076T9S-2CV1-6.19TB>| /pci@4,0/pci8086,347d@5/apci108e,487c@0/disk@1| /dev/chassis/DBP/HDD1/NVME/disk|
2. c3t0d0 <ATA-Min_5300_MAAAD-D3MU-223.57GB>| /pci@0,0/pci8e,4872@17/disk@0,0|
3. c4t2d0 <ATA-Min_5300_MTFD-D3MU-223.57GB>| /pci@0,0/pci08e,4872@17/disk@2,0| /dev/chassis/SYS/MB/SSDR0/SSD1/disk|