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echo: add exit code command (#10538) 

* echo: add exit code command

---------

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
Co-authored-by: Jack Lin <blueskyson1401@gmail.com>
Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>
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shreenidhi11 2023-07-25 13:17:16 -04:00 committed by GitHub
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pages/common/echo.md
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@ -22,3 +22,7 @@
- Enable interpretation of backslash escapes (special characters):
`echo -e "{{Column 1\tColumn 2}}"`
- Print the exit status of the last executed command (Note: In Windows Command Prompt and PowerShell the equivalent commands are `echo %errorlevel%` and `$lastexitcode` respectively):
`echo $?`