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BASH-Parameter extension

Shulou Source: shulou.com Published: 2022-06-03 06:06:39 09月24日 Update

BASH -Parameter Extension

root@localhost:/root> echo "AA/BB/CC/DD" >> testfile

root@localhost:/root> cat testfile

AA/BB/CC/DD

root@localhost:/root>

Ask to replace DD at the back

root@localhost:/root> TXT=`cat testfile` ; echo ${TXT%%DD}

AA/BB/CC/

root@localhost:/root>

Thinking:

http://www.linuxsir.org/bbs/forum60.html