added a code example to nushell post.

content/posts/nushell.adoc

@@ -50,6 +50,36 @@ thoughts, and some criticisms along the way.
 == Parsing non-nu tools
 
 // show parsing initcall_debug logs, and how it then lets one do analysis on it
+```
+[    0.518096] calling  prandom_reseed+0x0/0x40 @ 1
+[    0.518119] initcall prandom_reseed+0x0/0x40 returned 0 after 12 usecs
+[    0.518127] calling  clk_debug_init+0x0/0x140 @ 1
+[    0.531128] initcall clk_debug_init+0x0/0x140 returned 0 after 12659 usecs
+[    0.531145] calling  imx_amp_power_init+0x0/0x13c @ 1
+[    0.531156] initcall imx_amp_power_init+0x0/0x13c returned 0 after 1 usecs
+[    0.531175] calling  deferred_probe_initcall+0x0/0x3c @ 1
+[    0.532275] imx_thermal 2000000.aips-bus:tempmon: Automotive CPU temperature grade - max:125C critical:120C passive:115C
+[    0.533166] pcm1753 pcm1753: Setting maximum volume limit of 226
+[    0.535167] asoc-simple-card sound: PCM1753-HiFi <-> 2024000.esai mapping ok
+[    0.536199] initcall deferred_probe_initcall+0x0/0x3c returned 0 after 4880 usecs
+[    0.536217] calling  pm_genpd_debug_init+0x0/0x70 @ 1
+[    0.536249] initcall pm_genpd_debug_init+0x0/0x70 returned 0 after 20 usecs
+[    0.536262] calling  genpd_poweroff_unused+0x0/0x8c @ 1
+[    0.536284] initcall genpd_poweroff_unused+0x0/0x8c returned 0 after 11 usecs
+[    0.536296] calling  gpio_keys_init+0x0/0x20 @ 1
+```
+
+{{<highlight nushell "linenos=false">}}
+open $file |
+lines |
+find '] initcall ' |
+parse -r '\[\s*(?<timestamp>\d+\.\d+)\] (?<message>.+) returned (?<return>\d+) after (?<delta>.+)' |
+update timestamp {into float} |
+update delta {str replace ' usecs' 'us'} |
+update delta {into duration} |
+update return {into int} |
+move delta --after timestamp
+{{</highlight>}}
 
 == Defining custom commands