regex - How to rename multiple directories into corresponding file names in bash -


i need bash script rename directory:

i want rename 6 directories first in order conduct analysis:

this original directory name rename: 

mcia-1-control_20170509 mcia-2-control_20170509 mcia-03-timesport_20170717 mcia-04-timesport_20170717 mcia-05-timesport_20170717 mcia-6-timesport_20170717

i need rename following:

subj-1-control subj-2-control subj-3-timesport subj-4-timesport subj-5-timesport subj-6-timesport

i declared several variables below:

$fnids #e.g.mcia-1-control_20170509...  $ren #e.g. 1-control... $raw_dir #data directory

then run loop, results did not expect:

for fn in ${fnids};      echo "+++this folder name rename: fnids:${fnids}+++"     echo "+++renameing folder: fn:${fn}+++"      rn in ${ren};         echo "=======add "subj" rename subj folder==========="         refn=subj-"$rn" #e.g. subj-1-control...         echo "refn:$refn"         echo "rename folder $fn $refn"          if ( test -d "$raw_dir"/"$fn"); #if dir exist             cp -r "$raw_dir"/"$fn" "$raw_dir"/"$refn" #copy , rename file             echo "cp rename subj folder:$raw_dir/$refn"         elif ( test -d "$raw_dir"/"$refn");then             echo "++++++renamed subject folder exists+++++++"                    else             echo "+++++somthing went wrong!name of subject folder not exists check "$fn $refn"+++++++++"             exit         fi     done done

when execute above script, doing things below:

+++renameing folder: fn:mcia-1-control_20170509+++ =======rename subj folder=========== renfn:subj-1-control rename folder mcia-1-control_20170509 subj-1-control rename folder mcia-1-control_20170509 subj-2-control

what want is:

rename folder mcia-1-control_20170509 subj-1-control rename folder mcia-2-control_20170509 subj-2-control...

basically, rename original folder name 6 different subj folder name... got stuck here while...

thanks me out...

this can done using bash regular expression matching capturing groups.

code

read -r -d '' input <<end mcia-0-control_20170509 mcia-1-control_20170509 mcia-2-control_20170509 mcia-03-timesport_20170717 mcia-04-timesport_20170717 mcia-05-timesport_20170717 mcia-6-timesport_20170717 end  name in $input;     [[ $name =~ ^mcia-0*([[:digit:]]+)-(control|timesport)_[[:digit:]]+$ ]] &&             echo mv "$name" "subj-${bash_rematch[1]}-${bash_rematch[2]}" done

output

mv mcia-0-control_20170509 subj-0-control mv mcia-1-control_20170509 subj-1-control mv mcia-2-control_20170509 subj-2-control mv mcia-03-timesport_20170717 subj-3-timesport mv mcia-04-timesport_20170717 subj-4-timesport mv mcia-05-timesport_20170717 subj-5-timesport mv mcia-6-timesport_20170717 subj-6-timesport

explanation

  • ^: match start of string.
  • mcia-: match current directory prefix.
  • 0*: optionally match number of leading zeroes. these not go capturing group, because want discard them.
  • ([[:digit:]]+): after discarding leading zeroes, capture 1 or more remaining digits first capture group.
  • -: match , discard additional hyphen.
  • (control|timesport): capture either "control" or "timesport" second capture group.
  • _[[:digit:]]+: match rest.
  • $: match end of string.

if input string match, build mv command destination concatenation of "subj", first capture group , second capture group. testing purposes, code sample uses echo print command instead of running it. can expand necessary validation, existence checks, etc. doing in original code sample.

for more details on regular expressions in bash, see advanced bash-scripting guide - 18.1. brief introduction regular expression.


Comments

Post a Comment

Popular posts from this blog

node.js - Node js - Trying to send POST request, but it is not loading javascript content -

i have been trying send post request website, , has not been loading full site. i guessing problem node js not loading javascript content, executing it. can see javascript in response, though never loads content javascript files producing in html. what mean is, doesn't execute javascript. how make node js code overcome this, , wait the full website load? have tried native code, , "request' module, both producing same errors. if helps, don't need native javascript. modules fine. some code have tried (request module): var options = { method: 'post', uri: 'https://url', formdata: { 'email': 'email', 'prize': '0', 'transactional': 'on' }, headers: { /* 'content-type': 'application/x-www-form-urlencoded' */ // set automatically } }; rp(options) .then(function (body) { console.log(body) }) .catch(function (err) { console.log(err) }); when fetch content...
Read more

javascript - Replicate keyboard event with html button -

i have tried few ways make happen. have javascript pinball game uses keyboard keys controls. converting application touch screen display. workaround, hoping overlay buttons when clicked simulate keyboard strokes. have done research , sounds should work. using jquery v3.2.1 here things have tried far... html element: <input type="button" class="coil"></input> $('.coil').trigger({type: 'keydown', which: 40, keycode: 40}); with this, not errors, nothing happens. var coilkey = $('body').keydown(function(e) { switch (e.keycode) { case 40: break;} }) $('.coil').click(coilkey); this 1 returns error in console... ((jquery.event.special[handleobj.origtype] || (intermediate value)).handle || handleobj.handler).apply not function below javascript game engine handles key listeners... addkeylistener: function (keyandlistener) { this.keylisteners.push(keyandlistener); }, // gi...
Read more

javascript - Web audio api 5.1 surround example not working in firefox -

i've been playing lott lately web audio api on both firefox , chrome. few days ago started experiment surround set. when trying surround audio in web audio api came notice example works fine in chrome v59 not in firefox v54. // create web audio api context var audioctx = new (window.audiocontext || window.webkitaudiocontext)(); audioctx.destination.channelinterpretation = 'discrete'; audioctx.destination.channelcountmode = 'explicit'; audioctx.destination.channelcount = 6; var oscillators = []; var merger = audioctx.createchannelmerger(6); console.log(audioctx.destination, merger); //merger.channelinterpretation = 'discrete'; //merger.channelcountmode = 'explicit'; //merger.channelcount = 6; var addoscilator = function(channel, frequency) { var oscillator = audioctx.createoscillator(); oscillator.frequency.value = frequency; // value in hertz oscillator.connect(merger,0,channel); oscillator.start(); oscillators.push(o...
Read more