shell regular expression match
2020年1月17日 — You cannot use shorthand notation like -d and -b in Bash. If you change the regex to use the [[:digit:]] character class, it will work: ,2010年7月24日 — You can do this with GNU grep's perl mode: echo "12 BBQ ,45 rofl, 89 lol"|grep -P '-d+ (?=rofl)' -o. -P means Perl-style, and -o means match ...
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 shell regular expression match 相關參考資料
Check if a string matches a regex in Bash script - Stack Overflow
2015年1月29日 — That is, you can define a regex in Bash matching the format you want. This way you can do: ... If your shell is POSIX compliant, do (echo "$date" ... https://stackoverflow.com How do I match a regex in a shell script conditional statement ...
2020年1月17日 — You cannot use shorthand notation like -d and -b in Bash. If you change the regex to use the [[:digit:]] character class, it will work: https://stackoverflow.com How to extract a value from a string using regex and a shell ...
2010年7月24日 — You can do this with GNU grep's perl mode: echo "12 BBQ ,45 rofl, 89 lol"|grep -P '-d+ (?=rofl)' -o. -P means Perl-style, and -o means match ... https://stackoverflow.com Linux Regular Expression Tutorial: Grep Regex Example
2020年12月7日 — Regular expressions (Regexp) are special characters which help search data, matching complex patterns. This Linux regular expression ... https://www.guru99.com Pattern Matching In Bash | Linux Journal
2019年4月15日 — Wildcards allow you to specify succinctly a pattern that matches a set of filenames (for example, *.pdf to get a list of all the PDF files). Wildcards ... https://www.linuxjournal.com regular expression to extract information in shell script - Unix ...
2 Answers · what is the purpose of "-oP" in "grep -oP" ? – Abdul Al Hazred Mar 29 '15 at 16:03 · 1 @AbdulAlHazred, "-o" is for printing only the matchin... https://unix.stackexchange.com Regular ExpressionsShell Regular Expressions - Wikibooks ...
boxes enable a single character to be matched against a character lists or character range. A compliment box enables a single character not within in a character list or character range to be matched.... https://en.wikibooks.org shell script. how to extract string using regular expressions ...
2013年11月2日 — Using bash regular expressions: re="http://([^/]+)/" if [[ $name =~ $re ]]; then echo $BASH_REMATCH[1]}; fi. Edit - OP asked for explanation of ... https://stackoverflow.com Unix Linux - Regular Expressions with SED - Tutorialspoint
A regular expression is a string that can be used to describe several sequences of characters. Regular expressions are used by several different Unix commands, ... https://www.tutorialspoint.com |