自己写ls命令-Java版

鑷繁鍐檒s鍛戒护-Java鐗堜笂涓€绡囦粙缁峀inux鍛戒护绯诲垪ls-鍘熸潵鏈€绠€鍗曠殑ls杩欎箞澶嶆潅锛屾垜浠粩缁嗕粙缁嶄簡ls鍛戒护锛屾湰绡囨垜浠娇鐢↗ava浠ｇ爜鑷繁瀹炵幇ls鍛戒护锛屼粠鑰屽ls鍛戒护鏈夋洿娣卞叆鐨勭悊瑙ｃ€備唬鐮佸疄鐜版枃浠舵搷浣滅殑鍩烘湰鍘熺悊濡傛灉鎴戜滑鐢↗ava瀹炵幇涓€涓畝鍗曠殑ls鍛戒护锛屽叾瀹炲苟涓嶉毦锛屽洜涓篔ava宸茬粡涓烘垜浠彁渚涗簡涓€浜涙柟渚跨殑鏂囦欢绯荤粺鐩稿叧鐨凙PI銆傞毦鐐瑰湪浜庣悊瑙PI鍦ㄥ仛浠€涔堛€傚効瀛愶紒鍏跺疄杩欎簺API閮芥槸鎿嶄綔绯荤粺鎻愪緵缁欐垜浠殑锛岀劧鍚嶫ava灏佽浜嗕竴绯诲垪鐨勬搷浣滄潵涓烘垜浠彁渚涜繖浜涙搷浣溿€傝鎴戜滑浠旂粏鐪嬬湅灏佽绾у埆銆傞鍏堬紝鎿嶄綔绯荤粺浼氫负鎴戜滑鎻愪緵寰堝绯荤粺璋冪敤銆傚浜庝笌璁惧锛堢鐩樸€丆PU锛夌殑浜や簰锛屼緥濡備笌鏂囦欢鐨勪氦浜掑氨鏄鍐欐暟鎹€傚綋鐒舵垜浠殑Java绋嬪簭涔熼渶瑕佽繖浜涙搷浣滐紝鎵€浠VM涔熼渶瑕佷负鎴戜滑鎻愪緵杩欎簺鎿嶄綔锛屾墍浠VM杩涜绯荤粺璋冪敤銆備竴绯诲垪鐨勫皝瑁咃紝鍦↗ava涓殑鍏蜂綋褰㈠紡灏辨槸鍘熺敓淇グ鐨勬柟娉曘€傚鏋滀綘鏄竴涓湁缁忛獙鐨凧ava绋嬪簭鍛橈紝浣犱竴瀹氳杩嘕ava涓殑鏈湴鏂规硶銆傝繖浜涙柟娉曟槸Java涓烘垜浠皝瑁呯殑搴曞眰鎺ュ彛銆傛瘮濡侳ileInputStream涓湁涓€涓猺ead鏂规硶锛屽氨鏄鍙栨枃浠朵腑鐨勬暟鎹€傚唴瀹癸紝鎴戜滑鏉ョ湅鐪嬭繖涓柟娉曟槸濡備綍瀹炵幇鐨勶細publicintread()throwsIOException{returnread0();}杩欓噷涓轰簡璁╁ぇ瀹舵劅鍙楁洿娣变竴鐐桂煒傦紝鎴戝湪杩欓噷璐翠竴寮燜ileInputStream鐨勬簮鐮佸浘锛氫粠涓婇潰鐨勫浘鍙互鐪嬪嚭锛屽綋鎴戜滑璋冪敤FileInputStream鏂规硶鐨勬椂鍊欙紝纭疄鏄皟鐢ㄤ簡native鏂规硶銆備笅闈㈡垜浠潵鐪嬩竴浜涗笌鏂囦欢鎿嶄綔鐩稿叧鐨凙PI銆傚畠浠篃鏄娇鐢↗ava灏佽鐨勬湰鍦版柟娉曞疄鐜扮殑銆備笂闈富瑕佽浜嗕竴浜涘熀鏈殑鏂囦欢鎿嶄綔娴佺▼鐨勫師鐞嗭紝绠€鍗曡鏄庝簡Java灏嗗緢澶氱郴缁熸搷浣滃皝瑁呮垚native鏂规硶渚涙垜浠皟鐢ㄣ€備笅闈㈡垜浠潵鐪嬬湅瀹炵幇ls鍛戒护闇€瑕佸摢浜汚PI銆傛鏌ョ洰褰曚笅鏈夊摢浜涙枃浠跺拰鐩綍銆侸ava涓烘垜浠彁渚涗簡涓€涓被File銆傛垜浠彲浠ヤ娇鐢ㄨ繖涓被鏉ヨ幏鍙栨煇涓洰褰曚笅鏈夊摢浜涙枃浠跺拰鐩綍銆俻ublicvoidfileTest(){Filefile=newFile("./");//file.listFiles()鑾峰彇褰撳墠鏂囦欢瀵瑰簲鐩綍涓嬬殑鎵€鏈夋枃浠跺拰鐩綍for(FilelistFile:file.listFiles()){System.out.println(listFile.getName());//鎵撳嵃鏂囦欢鎴栫洰褰曠殑鍚嶇О}鏌ョ湅鏂囦欢鍜岀洰褰曠殑鍏冩暟鎹甁ava涓负鎴戜滑鎻愪緵浜嗕竴涓伐鍏风被鏉ユ煡鐪嬫枃浠剁殑涓€浜涘厓淇℃伅锛坢etadata锛夛紝姣斿uid锛堢敤鎴穒d锛夛紝gid锛堢敤鎴风粍锛塱d锛夛紝鏂囦欢鐨勫ぇ灏忓拰鏂囦欢鐨勯摼鎺ユ暟锛坣link锛夈€傝矾寰刾ath=Paths.get(".");System.out.println(Files.getAttribute(path,"unix:dev"));//鎵撳嵃瀛樺偍褰撳墠鐩綍鏁版嵁鐨勮澶囩殑璁惧idSystem.out.println(Files.getAttribute(path,"unix:ino"));//鎵撳嵃骞跺瓨鍌ㄥ綋鍓嶇洰褰曟暟鎹殑inode鍙稴ystem.out.println(Files.getAttribute(path,"unix:mode"));//鎵撳嵃骞跺瓨鍌ㄥ綋鍓嶇洰褰曟暟鎹鏁版嵁鐨勬ā寮忔暟鎹富瑕佺敤浜庢寚绀烘枃浠剁殑绫诲瀷System.out.println(Files.getAttribute(path,"unix:uid"));//鎵撳嵃骞跺瓨鍌ㄥ睘浜庡綋鍓嶇洰褰曠殑鐢ㄦ埛鐨勭敤鎴锋爣璇哠ystem.out.println(Files.getAttribute(path,"unix:gid"));//鎵撳嵃骞跺瓨鍌ㄥ綋鍓嶇洰褰曟墍灞炵粍鐨勭粍idSystem.out.println(Files.getAttribute(path,"unix:size"));//鎵撳嵃瀛樻斁褰撳墠鐩綍鏁版嵁鍗犵敤绌洪棿鐨勫ぇ灏廠ystem.out.println(Files.getAttribute(path,"unix:nlink"));//鎵撳嵃瀛樻斁褰撳墠鐩綍鏁版嵁鐨勯摼鎺ユ暟闄や簡涓婇潰鐨勬柟娉曪紝鎴戜滑杩樺彲浠ヤ娇鐢ㄤ笅闈㈢殑鏂规硶鏉ヨ幏鍙栨枃浠剁殑鍏冩暟鎹細publicvoidattrTest02()throwsIOException{Pathpath=Paths.get(".");//浼犲叆鐨勫弬鏁版槸鏂囦欢鎴栫洰褰曠殑璺緞銆傝繖鏄綋鍓嶇洰褰昉osixFileAttributesattr=Files.readAttributes(path,PosixFileAttributes.class,NOFOLLOW_LINKS);System.out.println锛堝睘鎬с€傛墍鏈夎€咃紙锛夛級;//鎵撳嵃鐢ㄦ埛鍚峉ystem.out.println(attr.group());//鎵撳嵃鐢ㄦ埛缁勫悕System.out.println(attr.isRegularFile());//鏄惁鏄€氱敤鏂囦欢绯荤粺銆俹ut.println(attr.isSymbolicLink());//鏄笉鏄鍙烽摼鎺ystem.out.println(attr.isDirectory());//鏄洰褰昐ystem.out.println(attr.isOther());//鍏朵粬绫诲瀷System.out.println(attr.permissions());//鎵撳嵃鏂囦欢鐨勬潈闄愭槸鍚﹀彲璇汇€佸彲鍐欍€佸彲鎵цSystem.out.println(attr.lastAccessTime());//涓婃璁块棶鏃堕棿System.out.println(attr.creationTime());//鍒涘缓鏃堕棿System.out.println(attr.lastModifiedTime());//鏈€鍚庝慨鏀规椂闂碨ystem.out.println(attr.fileKey());//鎵撳嵃鏂囦欢鍏朵粬鐩稿叧鍙傛暟涓昏鏄澶噄d鍜宨node鍙稴ystem.out.println(attr.size());//鏂囦欢澶у皬}root//杩欓噷鏄敤鎴峰悕root//杩欓噷鏄敤鎴风粍鍚峟alsefalsettruefalse[GROUP_READ,OTHERS_EXECUTE,OWNER_WRITE,OWNER_EXECUTE,OTHERS_READ,OWNER_READ,GROUP_EXECUTE]2022-10-09T18:08:47.791072133Z2022-10-09T13:10:51Z2022-10-09T18:08:23.746949182Z(dev=1000012,ino=16176823)192鏂囦欢鏉冮檺鍦↗ava涓粰鎴戜滑鎻愪緵浜嗕竴涓被鏉ヨ〃绀烘枃浠剁殑9绉嶆潈闄愶紙绗旇€呯殑璇诲啓鏉冮檺锛夋墽琛岋紝浣滆€呯粍璇诲啓鎵ц锛屽叾浠栦汉璇诲啓鎵ц锛屽叡涔濅釜鏉冮檺锛夛細packagejava.nio.file.attribute;publicenumPosixFilePermission{/***璇诲彇鏉冮檺锛屾墍鏈夎€呫€備綔鑰呰鍙栨潈闄?/OWNER_READ,/***鍐欏叆鏉冮檺锛屾墍鏈夎€呫€備綔鑰呭啓鏉冮檺*/OWNER_WRITE,/***鎵ц/鎼滅储鏉冮檺锛屾墍鏈夎€呫€備綔鑰呯殑鎵ц鏉冮檺*/OWNER_EXECUTE,/***璇绘潈闄愶紝缁勩€備綔鑰呮墍鍦ㄧ粍鐨勮鏉冮檺*/GROUP_READ,/***鍐欐潈闄愶紝缁勩€備綔鑰呯粍鐨勫啓鏉冮檺*/GROUP_WRITE,/***鎵ц/鎼滅储鏉冮檺锛岀粍銆?/GROUP_EXECUTE,/***璇诲彇鏉冮檺锛屽叾浠栥€備粬浜鸿鏉冮檺*/OTHERS_READ,/***鍐欐潈闄愶紝others.鍏朵粬鍐欐潈闄?/OTHERS_WRITE,/***鎵ц/鎼滅储鏉冮檺,others.Othersexecutepermissions*/OTHERS_EXECUTE;}褰撴煡鐪嬩笂闈竴涓枃浠舵垨鐩綍鐨勫厓鏁版嵁鏃讹紝鎴戜滑宸茬粡鑾峰彇鍒颁簡璇ユ枃浠剁殑鎵€鏈夋潈闄愪俊鎭細System.out.println(attr.permissions());//[GROUP_READ,OTHERS_EXECUTE,OWNER_WRITE,OWNER_EXECUTE,OTHERS_READ,OWNER_READ,GROUP_EXECUTE]鍑芥暟杩斿洖涓€涓泦鍚堬紝閲岄潰瀛樻斁浜嗘枃浠跺悇绉嶆潈闄愮殑淇℃伅銆傛瘮濡傛垜浠殑渚嬪瓙涓紝鍙互鐪嬪埌To锛屾湁缁勮锛屾湁鍒汉鎵ц锛屾湁浣滆€呰嚜宸卞啓锛屾湁浣滆€呮墽琛岋紝鏈夊埆浜鸿锛屾湁浣滆€呰銆傚鏋滄垜浠鍒ゆ柇鎵撶牬鏌愪釜鏉冮檺锛屽彧闇€瑕佹鏌ラ泦鍚堜腑鏄惁鍖呭惈瀹屾暣鐨勪唬鐮佸疄鐜颁笂闈㈠叧浜巐s鍛戒护鐨勫疄鐜扮粏鑺傛垜浠兘璇村畬浜嗭紝鏉ョ湅鐪嬫垜浠殑浠ｇ爜瀹炵幇锛歩mportjava.io.File;importjava.io.IOException;importjava.nio.file.Files锛涘鍏ava.nio.file.Path锛涘鍏ava.nio.file.Paths锛涘鍏ava.nio.file.attribute.PosixFileAttributes锛涘鍏ava.nio.file.attribute.PosixFilePermission锛涘鍏ava.util.Objects锛涘鍏ava.util.Set;importstaticjava.nio.file.LinkOption.NOFOLLOW_LINKS;publicclassLS{publicstaticbooleanhasRight(Setset,PosixFilePermissionpermission){returnset.contains(permission);}publicstaticvoidechoCharacter(Setset){//鐢ㄦ埛if(hasRight(set,PosixFilePermission.OWNER_READ))System.out.print('r');鍚﹀垯System.out.print('-');濡傛灉锛坔asRight锛堣缃紝PosixFilePermission.OWNER_WRITE锛夛級System.out.print锛?w'锛?鍚﹀垯System.out.print('-');if(hasRight(set,PosixFilePermission.OWNER_EXECUTE))System.out.print('x');鍚﹀垯System.out.print('-');//鍒嗙粍if(hasRight(set,PosixFilePermission.GROUP_READ))System.out.print('r');鍚﹀垯System.out.print('-');if(hasRight(set,PosixFilePermission.GROUP_WRITE))System.out.print('w');鍚﹀垯System.out.print('-');if(hasRight(set,PosixFilePermission.GROUP_EXECUTE))System.out.print('x');鍚﹀垯System.out.print('-');//鍏朵粬if(hasRight(set,PosixFilePermission.OTHERS_READ))System.out.print('r');鍚﹀垯System.out.print('-');濡傛灉锛坔asRight锛堣缃紝PosixFilePermission.OTHERS_WRITE锛夛級System.out.print锛?w'锛?鍚﹀垯System.out.print('-');if(hasRight(set,PosixFilePermission.OTHERS_EXECUTE))System.out.print('x');鍚﹀垯System.out.print('-');}publicstaticvoidechoType(PosixFileAttributesattributes){if(attributes.isDirectory())System.out.print('d');鍚﹀垯濡傛灉锛堝睘鎬?isRegularFile锛堬級)System.out.print('-');elseif(attributes.isSymbolicLink())System.out.print('l');鍚﹀垯System.out.print('o');}publicstaticvoidechoFileInformation(Stringargs)鎶涘嚭IOException{Pathpath=Paths.get(args);PosixFileAttributes灞炴€?Files.readAttributes(path,PosixFileAttributes.class,NOFOLLOW_LINKS);echoType锛堝睘鎬э級锛沞choCharacter(attributes.permissions());System.out.printf("\t%-2d",Files.getAttribute(path,"unix:nlink"));System.out.print("\t"+attributes.owner().getName());System.out.print("\t"+attributes.group().getName());System.out.printf("\t%-5d",attributes.size());System.out.printf("\t%10s",attributes.lastAccessTime());System.out.println("\t"+path.getFileName());}publicstaticvoidmain(String[]args)throwsIOException{Filefile=newFile(args[0]);瀵逛簬锛堟枃浠跺垪琛ㄦ枃浠?Objects.requireNonNull(file.listFiles())){echoFileInformation(listFile.toString());}}}涓婇潰鐨勪唬鐮佸緢鐭紝濡傛灉浣犱簡瑙ｄ笂闈ain涓彁鍒扮殑api锛屽簲璇ュ緢瀹规槗鐞嗚В鎴戜滑鏉ョ湅鐪嬬▼搴忕殑杈撳嚭锛氬彲浠ョ湅鍒版垜浠▼搴忕殑杈撳嚭鏄竴鏍风殑鍜宭s鍛戒护鐨勮緭鍑轰竴鏍凤紝鍙槸鏃堕棿鐨勮〃杈炬柟寮忔湁鍖哄埆锛屾棤鎵€璋撱€備互涓婂氨鏄湰鏂囩殑鍏ㄩ儴鍐呭锛屾垜鏄疞eHung锛屾垜浠笅鏈熷啀瑙侊紒锛侊紒鏇村绮惧僵鍐呭鍚堥泦鍙互璁块棶椤圭洰锛歨ttps://github.com/Chang-LeHu...鍏虫敞鍏紬鍙凤細涓€涓病鐢ㄧ殑鐮旂┒鍍э紝瀛︿範鏇村璁＄畻鏈虹煡璇嗭紙Java锛孭ython锛岃绠楁満绯荤粺鍩虹锛岀畻娉曞拰鏁版嵁缁撴瀯锛夌煡璇嗐€?/p>