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$: add PID example (#23540)

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Managor
2026-08-12 10:43:11 +08:00
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commit 97bc7a9938
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pages/common/$.md
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@@ -11,9 +11,9 @@
`${{VARIABLE}}`
- Print the exit status of the previous command:
- Print the PID or the exit status of the previous command:
`echo $?`
`echo {{$!|$?}}`
- Print a random number between 0 and 32767: