regex - grep/ack on Mac OS X finding multiple strings and respecting file types -


i run grep on mac os x meeting following criteria:

  • search files *.r or *.r extension , ignore other files
  • find strings: worda , wordb accounting fact strings may appear in format somerubbishwordarubbish (this valid match)
  • list files both strings appear irrespectively of order
  • print lines strings appear
  • highlight found words in colour
  • print file name header , lines under header. i'm inspired ack options.
  • ignoring case

approach

i thinking of making use of this discussion , starting following grep syntax:

grep --include=*.r -r setheader .

then combining following:

grep 'word1\|word2\|word3' /path

however, appreciate comments on ensuring of criteria stated above evaluated correctly.

groups

^(.*)(facet|map)(.*)(map|facet)(.*)$

regex101

ack

running ack -f shows *.r files searched solutions using ack accepted. example, running:

ack worda --colour -i -h --rr

gets desired results respect worda. thinking of combining solutions discussed here use and not or , ignore order in strings may appear. further tried:

ack --match worda --match wordb  --colour -i -h --rr

but produced results wordb.

here's script combines closely-named awk , ack commands:

find . -iname '*.r' | while read file;     awk '         begin { ignorecase=1; sawworda = 0; sawwordb = 0 }         /worda/ { sawworda = 1 }         /wordb/ { sawwordb = 1 }         sawworda && sawwordb { exit } # stop reading lines if both matches seen         end { exit !(sawworda && sawwordb) }         ' \         "${file}" \     && ack --nofilter -h -i 'worda|wordb' "${file}" done

the awk command...

  • lists files both strings appear irrespectively of order
  • ignores case

...and ack command...

  • prints lines strings appear
  • highlights found words in colour
  • prints file name header , lines under header inspired ack options
  • ignores case

the awk script sets flags if there search string matches. if both strings have been matched, snippet exit !(sawworda && sawwordb) return 0. if awk returns 0, ack command runs.

the ack --nofilter option tells ack avoid reading stdin. otherwise, ack try use stdin read command using.

in comments, konrad asked how use above code when passing in variables in shell script. below example:

#!/bin/sh  if [ $# -ne 2 ];     echo usage: $0 {string1} {string2}     e_badargs=65     exit $e_badargs fi  find . -maxdepth 1 -iname '*.r' | while read file;     awk "         begin { ignorecase=1; sawarg1 = 0; sawarg2 = 0 }         /$1/ { sawarg1 = 1 }         /$2/ { sawarg2 = 1 }         sawarg1 && sawarg2 { exit } # stop reading lines if both matches seen         end { exit !(sawarg1 && sawarg2) }         " \         "${file}" \     && ack --nofilter -h -i "$1|$2" "${file}" done

the above example doesn't escape special characters in arguments provided script. if escaping needed, script can modified needed.


Comments

Post a Comment

Popular posts from this blog

java - pagination of xlsx file to XSSFworkbook using apache POI -

right in code, reading xlsx file, xssfworkbook, , writing database. but, when size of xlsx file increases, causes outofmemory error. can not increase server size, or divide xlsx file pieces. tried loading workbook using file (instead of inputstream), didn't either. i looking way read 10k rows @ time (instead of entire file @ once) , iteratively write workbook , database. is there way apache poi? poi contains called "eventmodel" designed purpose. it's mentioned in faq : the ss eventmodel package api reading excel files without loading whole spreadsheet memory. require more knowledge on part of user, reduces memory consumption more tenfold. based on awt event model in combination sax. if need read-only access, best way it. however, may want double check first if issue somewhere else. check out this item : i think poi using memory! can do? 1 comes quite lot, reason isn't might think. so, first thing check - what's source of prob...
Read more

Unlimited choices in BASH case statement -

consider simple bash snippet: case $option in 1) image=${options[0]%.tar} ;; 2) image=${options[1]%.tar} ;; 3) image=${options[2]%.tar} ;; 4) image=${options[3]%.tar} ;; *) echo "invalid option" exit 1 esac in real script numbers goes 30. makes pretty long. can somehow specify cases variable? something this: case $option in $i) image=${options[$(($i-1))]%.tar} any pointer appreciated. you can match against multiple patterns in single clause: case $option in 1|2|3: echo "$option one, 2 or three" ;; esac if still typing you, can use simple pattern matching: case $option in # following matches # - single-digit numbers 0-9 # - two-digit numbers starting either 1 or 2 # - number 30 [0-9]|[12][0-9]|30) image=${options[$(($option-1))]%.tar} ;; *) echo "invalid option" 1>&2 exit 1 esac
Read more

apache - How do I stop my index.php being run twice for every user -

we've got webapp initial html served using apache , php. i noticed index.php being run twice every request. seems caused / effected rewrite rules in our .htaccess - rewritecond %{http_host} ^(www\.|hotels\.)ourdomain\.com$ [nc,or] rewritecond %{server_name} ^(www\.|hotels\.)ourdomain\.com$ [nc] rewriterule (.*) http://ourdomain.com/$1 [r=301] rewriterule ^hotels/([^/]+)/?\??(.*)$ ?d=$1&$2 [qsa] the final rule moving parameter url path query string. i.e. http://ourdomain.com/hotels/vegas?someparam=1 becomes http://ourdomain.com?d=vegas&someparam=1 if go directly query string version index.php run once. if use url redirected, index.php run twice (i'm checking adding error_log('end of index.php') file). so example going http://ourdomain.com/hotels/paris hits file twice http://ourdomain.com?d=paris hits once. i've seen this question , had @ blog mentioned , , can't find empty string url's (i've tried using yslow process). ...
Read more