🌹作者:云小逸
📝个人主页:云小逸的主页
📝Github:云小逸的Github
🤟motto:要敢于一个人默默的面对自己,强大自己才是核心。不要等到什么都没有了,才下定决心去做。种一颗树,最好的时间是十年前,其次就是现在!学会自己和解,与过去和解,努力爱自己。==希望春天来之前,我们一起面朝大海,春暖花开!==🤟
👏专栏:C++👏 👏专栏:Java语言👏
👏专栏:C语言初阶👏👏专栏:数据结构👏👏专栏:Liunx学习👏
今天我们开始进行Linux知识的学习,这篇文章主要是承接上一篇文章【Linux常见指令大全(一)】继续书写Linux的基本指令!!!本系列的Linux的指令操作都是在云服务器上操作的。
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首先先写上几句话:献给坚持创作的我和点开这篇文章希望进步的你
1.无论你在寻找什么,亲情,友情,或爱情,终其一生,其实你都是一个人,极少有人能真正的像你一样理解你自己,哪怕是亲人,朋友或恋人,他们只能辅助你去理解自己,你唯一的人生课题就是找到自己。
2.不懂得爱自己的人,是没办法爱别人的。某些时候,怜悯不是爱,纵容不是爱,正确的爱是刚柔并济,褒贬具存的,是懒惰时的严厉,哭泣时的拥抱,懦弱时的鼓励,黑夜里的路灯。爱是让风筝飞行的风,是荒漠里久逢甘露,是戈壁滩种下的树,是暴风雨中飞翔的鸟,是你手中紧紧握住又愿意放出的风筝线,正确的爱不会让任何人痛苦,只会让你的精神和心灵在任何天气里都能走得更远站的更高。
3.有时候最大的伤害都来自于最亲近的人,但是你要记住你很好,而且做你自己就好,也不要怨恨,不要变成自己讨厌的样子,不要一直陷在怪圈里,对伤害最好的反击就是:让伤害到我为止。让伤害到我为止不是打碎牙往肚子里咽,而是我有能力消化离开,将我对美好未来的愿望积累,超过我对过去耿耿于怀的怨恨,不再执着责备,不愿耗费一分,可以忍着痛把它抹零,重新开始。理解过去的根源,消解过去的伤痛,和脱离这个怪圈。不计较是否解气是否公平是否委屈,有能忘却一切的决心和离开重新开始新的生活的勇气。
4.人生能真正有效改变自己的,只有为数不多的十来年,珍惜机遇,尤其是你还年轻的时候,比如读书。
5.每个人的生活都下了雪,尽量自己清扫自己的屋檐,体谅别人的辛苦,原谅偶尔的冷漠,没有人是永不疲惫的超人。但是如果可以,你要尽量力所能及做一个能温暖别人的人, 这种感觉也很好。
Linux的命令有很多参数,我们不可能全记住,我们可以通过查看联机手册获取帮助。访问Linux手册页的命令是man
-k 根据关键字搜索联机帮助
num 只在第num章节找
-a 将所有章节的都显示出来,比如 man printf 它缺省从第一章开始搜索,知道就停止,用a选项,当按 下q退出,他会继续往后面搜索,直到所有章节都搜索完毕。
解释一下,面手册分为8章
1 是普通的命令
2 是系统调用,如open,write之类的(通过这个,至少可以很方便的查到调用这个函数,需要加什么头文 件)
3 是库函数,如printf,fread
4是特殊文件,也就是/dev下的各种设备文件
5 是指文件的格式,比如passwd,
就会说明这个文件中各个字段的含义
6 是给游戏留的,由各个游戏自己定义
7 是附件还有一些变量,比如向environ这种全局变量在这里就有说明
8 是系统管理用的命令,这些命令只能由root使用,如ifconfig
1.man是一个查看命令,系统调用,C接口的一个手册!
2.手册是有编号的。
3.man默认是从1号手册开始查找,找到即停。
4.man可以根据指定手册查找man1/2/3------命令/接口/C
上面是Linux系统对man指令的解释【man man】
cp指令用于复制文件或目录,如同时指定两个以上的文件或目录,且最后的目的地是一个已经存在的目录,
则它会把前面指定的所有文件或目录复制到此目录中。若同时指定多个文件或目录,而最后的目的地并非一个已存
在的目录,则会出现错误信息
-f 或 --force 强行复制文件或目录, 不论目的文件或目录是否已经存在
-i 或 --interactive 覆盖文件之前先询问用户
-r递归处理,将指定目录下的文件与子目录一并处理。若源文件或目录的形态,不属于目录或符号链 接,则一律视为普通文件处理8处理
cp 拷贝目录和文件,-r -f -i,同rm中的用法。
[root@VM-4-9-centos KongQing]# tree .
.0 directories, 0 files
[root@VM-4-9-centos KongQing]# touch test.txt
[root@VM-4-9-centos KongQing]# mkdir a/b/c
mkdir: cannot create directory ‘a/b/c’: No such file or directory
[root@VM-4-9-centos KongQing]# tree .
.
`-- test.txt0 directories, 1 file
[root@VM-4-9-centos KongQing]# mkdir -p a/b/c
[root@VM-4-9-centos KongQing]# tree .
.
|-- a
| `-- b
| `-- c
`-- test.txt3 directories, 1 file
[root@VM-4-9-centos KongQing]# mkdir d
[root@VM-4-9-centos KongQing]# cp test.txt d
[root@VM-4-9-centos KongQing]# tree .
.
|-- a
| `-- b
| `-- c
|-- d
| `-- test.txt
`-- test.txt4 directories, 2 files
[root@VM-4-9-centos KongQing]#
[root@VM-4-9-centos KongQing]#
[root@VM-4-9-centos KongQing]# cp d a
cp: omitting directory ‘d’
[root@VM-4-9-centos KongQing]# cp -rf d a
[root@VM-4-9-centos KongQing]# tree .
.
|-- a
| |-- b
| | `-- c
| `-- d
| `-- test.txt
|-- d
| `-- test.txt
`-- test.txt5 directories, 3 files
[root@VM-4-9-centos KongQing]#
mv命令是move的缩写,可以用来移动文件或者将文件改名(move (rename) files),是Linux系统下常用的命
令,经常用来备份文件或者目录。
1.类似剪切功能,move,移动文件或者目录
2.对文件或者目录进行重命名
-f :force 强制的意思,如果目标文件已经存在,不会询问而直接覆盖
-i :若目标文件 (destination) 已经存在时,就会询问是否覆盖
将rm改造成mv
vim ~/.bashrc #修改这个文件
mkdir -p ~/.trash
alias rm=trash
alias ur=undelfile
undelfile() {
mv -i ~/.trash/\$@ ./
}
trash() {
mv $@ ~/.trash/
}
[root@VM-4-9-centos KongQing]# tree .
.0 directories, 0 files
[root@VM-4-9-centos KongQing]# touch test
[root@VM-4-9-centos KongQing]# mkdir a/b/c
mkdir: cannot create directory ‘a/b/c’: No such file or directory
[root@VM-4-9-centos KongQing]# mkdir -p a/b/c
[root@VM-4-9-centos KongQing]# tree .
.
|-- a
| `-- b
| `-- c
`-- test3 directories, 1 file
[root@VM-4-9-centos KongQing]# mkdir s
[root@VM-4-9-centos KongQing]# mv test s
[root@VM-4-9-centos KongQing]# tree .
.
|-- a
| `-- b
| `-- c
`-- s`-- test4 directories, 1 file
[root@VM-4-9-centos KongQing]# mv s a
[root@VM-4-9-centos KongQing]# tree .
.
`-- a|-- b| `-- c`-- s`-- test4 directories, 1 file
[root@VM-4-9-centos KongQing]#
-b 对非空输出行编号
-n 对输出的所有行编号
-s 不输出多行空行
# cnt=0; while [ $cnt -le 1000 ] ; do echo "hello 106 [$cnt]"; let cnt++; done > test.txt
打印一千行【hello 106】在test.txt文件里;
[root@VM-4-9-centos KongQing]# cnt=0; while [ $cnt -le 1000 ] ; do echo "hello 106 [$cnt]"; let cnt++; done > test.txt
[root@VM-4-9-centos KongQing]# cat test.txt
hello 106 [0]
hello 106 [1]
hello 106 [2]
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[root@VM-4-9-centos KongQing]# cat -n test.txt1 hello 106 [0]2 hello 106 [1]3 hello 106 [2]4 hello 106 [3]5 hello 106 [4]6 hello 106 [5]7 hello 106 [6]8 hello 106 [7]9 hello 106 [8]10 hello 106 [9]11 hello 106 [10]12 hello 106 [11]13 hello 106 [12]14 hello 106 [13]15 hello 106 [14]16 hello 106 [15]17 hello 106 [16]18 hello 106 [17]19 hello 106 [18]20 hello 106 [19]21 hello 106 [20]22 hello 106 [21]23 hello 106 [22]24 hello 106 [23]25 hello 106 [24]26 hello 106 [25]27 hello 106 [26]28 hello 106 [27]29 hello 106 [28]30 hello 106 [29]31 hello 106 [30]32 hello 106 [31]33 hello 106 [32]34 hello 106 [33]35 hello 106 [34]36 hello 106 [35]37 hello 106 [36]38 hello 106 [37]39 hello 106 [38]40 hello 106 [39]41 hello 106 [40]42 hello 106 [41]43 hello 106 [42]44 hello 106 [43]45 hello 106 [44]46 hello 106 [45]47 hello 106 [46]48 hello 106 [47]49 hello 106 [48]50 hello 106 [49]51 hello 106 [50]52 hello 106 [51]53 hello 106 [52]54 hello 106 [53]55 hello 106 [54]56 hello 106 [55]57 hello 106 [56]58 hello 106 [57]59 hello 106 [58]60 hello 106 [59]61 hello 106 [60]62 hello 106 [61]63 hello 106 [62]64 hello 106 [63]65 hello 106 [64]66 hello 106 [65]67 hello 106 [66]68 hello 106 [67]69 hello 106 [68]70 hello 106 [69]71 hello 106 [70]72 hello 106 [71]73 hello 106 [72]74 hello 106 [73]75 hello 106 [74]76 hello 106 [75]77 hello 106 [76]78 hello 106 [77]79 hello 106 [78]80 hello 106 [79]81 hello 106 [80]82 hello 106 [81]83 hello 106 [82]84 hello 106 [83]85 hello 106 [84]86 hello 106 [85]87 hello 106 [86]88 hello 106 [87]89 hello 106 [88]90 hello 106 [89]91 hello 106 [90]92 hello 106 [91]93 hello 106 [92]94 hello 106 [93]95 hello 106 [94]96 hello 106 [95]97 hello 106 [96]98 hello 106 [97]99 hello 106 [98]100 hello 106 [99]101 hello 106 [100]102 hello 106 [101]103 hello 106 [102]104 hello 106 [103]105 hello 106 [104]106 hello 106 [105]107 hello 106 [106]108 hello 106 [107]109 hello 106 [108]110 hello 106 [109]111 hello 106 [110]112 hello 106 [111]113 hello 106 [112]114 hello 106 [113]115 hello 106 [114]116 hello 106 [115]117 hello 106 [116]118 hello 106 [117]119 hello 106 [118]120 hello 106 [119]121 hello 106 [120]122 hello 106 [121]123 hello 106 [122]124 hello 106 [123]125 hello 106 [124]126 hello 106 [125]127 hello 106 [126]128 hello 106 [127]129 hello 106 [128]130 hello 106 [129]131 hello 106 [130]132 hello 106 [131]133 hello 106 [132]134 hello 106 [133]135 hello 106 [134]136 hello 106 [135]137 hello 106 [136]138 hello 106 [137]139 hello 106 [138]140 hello 106 [139]141 hello 106 [140]142 hello 106 [141]143 hello 106 [142]144 hello 106 [143]145 hello 106 [144]146 hello 106 [145]147 hello 106 [146]148 hello 106 [147]149 hello 106 [148]150 hello 106 [149]151 hello 106 [150]152 hello 106 [151]153 hello 106 [152]154 hello 106 [153]155 hello 106 [154]156 hello 106 [155]157 hello 106 [156]158 hello 106 [157]159 hello 106 [158]160 hello 106 [159]161 hello 106 [160]162 hello 106 [161]163 hello 106 [162]164 hello 106 [163]165 hello 106 [164]166 hello 106 [165]167 hello 106 [166]168 hello 106 [167]169 hello 106 [168]170 hello 106 [169]171 hello 106 [170]172 hello 106 [171]173 hello 106 [172]174 hello 106 [173]175 hello 106 [174]176 hello 106 [175]177 hello 106 [176]178 hello 106 [177]179 hello 106 [178]180 hello 106 [179]181 hello 106 [180]182 hello 106 [181]183 hello 106 [182]184 hello 106 [183]185 hello 106 [184]186 hello 106 [185]187 hello 106 [186]188 hello 106 [187]189 hello 106 [188]190 hello 106 [189]191 hello 106 [190]192 hello 106 [191]193 hello 106 [192]194 hello 106 [193]195 hello 106 [194]196 hello 106 [195]197 hello 106 [196]198 hello 106 [197]199 hello 106 [198]200 hello 106 [199]201 hello 106 [200]202 hello 106 [201]203 hello 106 [202]204 hello 106 [203]205 hello 106 [204]206 hello 106 [205]207 hello 106 [206]208 hello 106 [207]209 hello 106 [208]210 hello 106 [209]211 hello 106 [210]212 hello 106 [211]213 hello 106 [212]214 hello 106 [213]215 hello 106 [214]216 hello 106 [215]217 hello 106 [216]218 hello 106 [217]219 hello 106 [218]220 hello 106 [219]221 hello 106 [220]222 hello 106 [221]223 hello 106 [222]224 hello 106 [223]225 hello 106 [224]226 hello 106 [225]227 hello 106 [226]228 hello 106 [227]229 hello 106 [228]230 hello 106 [229]231 hello 106 [230]232 hello 106 [231]233 hello 106 [232]234 hello 106 [233]235 hello 106 [234]236 hello 106 [235]237 hello 106 [236]238 hello 106 [237]239 hello 106 [238]240 hello 106 [239]241 hello 106 [240]242 hello 106 [241]243 hello 106 [242]244 hello 106 [243]245 hello 106 [244]246 hello 106 [245]247 hello 106 [246]248 hello 106 [247]249 hello 106 [248]250 hello 106 [249]251 hello 106 [250]252 hello 106 [251]253 hello 106 [252]254 hello 106 [253]255 hello 106 [254]256 hello 106 [255]257 hello 106 [256]258 hello 106 [257]259 hello 106 [258]260 hello 106 [259]261 hello 106 [260]262 hello 106 [261]263 hello 106 [262]264 hello 106 [263]265 hello 106 [264]266 hello 106 [265]267 hello 106 [266]268 hello 106 [267]269 hello 106 [268]270 hello 106 [269]271 hello 106 [270]272 hello 106 [271]273 hello 106 [272]274 hello 106 [273]275 hello 106 [274]276 hello 106 [275]277 hello 106 [276]278 hello 106 [277]279 hello 106 [278]280 hello 106 [279]281 hello 106 [280]282 hello 106 [281]283 hello 106 [282]284 hello 106 [283]285 hello 106 [284]286 hello 106 [285]287 hello 106 [286]288 hello 106 [287]289 hello 106 [288]290 hello 106 [289]291 hello 106 [290]292 hello 106 [291]293 hello 106 [292]294 hello 106 [293]295 hello 106 [294]296 hello 106 [295]297 hello 106 [296]298 hello 106 [297]299 hello 106 [298]300 hello 106 [299]301 hello 106 [300]302 hello 106 [301]303 hello 106 [302]304 hello 106 [303]305 hello 106 [304]306 hello 106 [305]307 hello 106 [306]308 hello 106 [307]309 hello 106 [308]310 hello 106 [309]311 hello 106 [310]312 hello 106 [311]313 hello 106 [312]314 hello 106 [313]315 hello 106 [314]316 hello 106 [315]317 hello 106 [316]318 hello 106 [317]319 hello 106 [318]320 hello 106 [319]321 hello 106 [320]322 hello 106 [321]323 hello 106 [322]324 hello 106 [323]325 hello 106 [324]326 hello 106 [325]327 hello 106 [326]328 hello 106 [327]329 hello 106 [328]330 hello 106 [329]331 hello 106 [330]332 hello 106 [331]333 hello 106 [332]334 hello 106 [333]335 hello 106 [334]336 hello 106 [335]337 hello 106 [336]338 hello 106 [337]339 hello 106 [338]340 hello 106 [339]341 hello 106 [340]342 hello 106 [341]343 hello 106 [342]344 hello 106 [343]345 hello 106 [344]346 hello 106 [345]347 hello 106 [346]348 hello 106 [347]349 hello 106 [348]350 hello 106 [349]351 hello 106 [350]352 hello 106 [351]353 hello 106 [352]354 hello 106 [353]355 hello 106 [354]356 hello 106 [355]357 hello 106 [356]358 hello 106 [357]359 hello 106 [358]360 hello 106 [359]361 hello 106 [360]362 hello 106 [361]363 hello 106 [362]364 hello 106 [363]365 hello 106 [364]366 hello 106 [365]367 hello 106 [366]368 hello 106 [367]369 hello 106 [368]370 hello 106 [369]371 hello 106 [370]372 hello 106 [371]373 hello 106 [372]374 hello 106 [373]375 hello 106 [374]376 hello 106 [375]377 hello 106 [376]378 hello 106 [377]379 hello 106 [378]380 hello 106 [379]381 hello 106 [380]382 hello 106 [381]383 hello 106 [382]384 hello 106 [383]385 hello 106 [384]386 hello 106 [385]387 hello 106 [386]388 hello 106 [387]389 hello 106 [388]390 hello 106 [389]391 hello 106 [390]392 hello 106 [391]393 hello 106 [392]394 hello 106 [393]395 hello 106 [394]396 hello 106 [395]397 hello 106 [396]398 hello 106 [397]399 hello 106 [398]400 hello 106 [399]401 hello 106 [400]402 hello 106 [401]403 hello 106 [402]404 hello 106 [403]405 hello 106 [404]406 hello 106 [405]407 hello 106 [406]408 hello 106 [407]409 hello 106 [408]410 hello 106 [409]411 hello 106 [410]412 hello 106 [411]413 hello 106 [412]414 hello 106 [413]415 hello 106 [414]416 hello 106 [415]417 hello 106 [416]418 hello 106 [417]419 hello 106 [418]420 hello 106 [419]421 hello 106 [420]422 hello 106 [421]423 hello 106 [422]424 hello 106 [423]425 hello 106 [424]426 hello 106 [425]427 hello 106 [426]428 hello 106 [427]429 hello 106 [428]430 hello 106 [429]431 hello 106 [430]432 hello 106 [431]433 hello 106 [432]434 hello 106 [433]435 hello 106 [434]436 hello 106 [435]437 hello 106 [436]438 hello 106 [437]439 hello 106 [438]440 hello 106 [439]441 hello 106 [440]442 hello 106 [441]443 hello 106 [442]444 hello 106 [443]445 hello 106 [444]446 hello 106 [445]447 hello 106 [446]448 hello 106 [447]449 hello 106 [448]450 hello 106 [449]451 hello 106 [450]452 hello 106 [451]453 hello 106 [452]454 hello 106 [453]455 hello 106 [454]456 hello 106 [455]457 hello 106 [456]458 hello 106 [457]459 hello 106 [458]460 hello 106 [459]461 hello 106 [460]462 hello 106 [461]463 hello 106 [462]464 hello 106 [463]465 hello 106 [464]466 hello 106 [465]467 hello 106 [466]468 hello 106 [467]469 hello 106 [468]470 hello 106 [469]471 hello 106 [470]472 hello 106 [471]473 hello 106 [472]474 hello 106 [473]475 hello 106 [474]476 hello 106 [475]477 hello 106 [476]478 hello 106 [477]479 hello 106 [478]480 hello 106 [479]481 hello 106 [480]482 hello 106 [481]483 hello 106 [482]484 hello 106 [483]485 hello 106 [484]486 hello 106 [485]487 hello 106 [486]488 hello 106 [487]489 hello 106 [488]490 hello 106 [489]491 hello 106 [490]492 hello 106 [491]493 hello 106 [492]494 hello 106 [493]495 hello 106 [494]496 hello 106 [495]497 hello 106 [496]498 hello 106 [497]499 hello 106 [498]500 hello 106 [499]501 hello 106 [500]502 hello 106 [501]503 hello 106 [502]504 hello 106 [503]505 hello 106 [504]506 hello 106 [505]507 hello 106 [506]508 hello 106 [507]509 hello 106 [508]510 hello 106 [509]511 hello 106 [510]512 hello 106 [511]513 hello 106 [512]514 hello 106 [513]515 hello 106 [514]516 hello 106 [515]517 hello 106 [516]518 hello 106 [517]519 hello 106 [518]520 hello 106 [519]521 hello 106 [520]522 hello 106 [521]523 hello 106 [522]524 hello 106 [523]525 hello 106 [524]526 hello 106 [525]527 hello 106 [526]528 hello 106 [527]529 hello 106 [528]530 hello 106 [529]531 hello 106 [530]532 hello 106 [531]533 hello 106 [532]534 hello 106 [533]535 hello 106 [534]536 hello 106 [535]537 hello 106 [536]538 hello 106 [537]539 hello 106 [538]540 hello 106 [539]541 hello 106 [540]542 hello 106 [541]543 hello 106 [542]544 hello 106 [543]545 hello 106 [544]546 hello 106 [545]547 hello 106 [546]548 hello 106 [547]549 hello 106 [548]550 hello 106 [549]551 hello 106 [550]552 hello 106 [551]553 hello 106 [552]554 hello 106 [553]555 hello 106 [554]556 hello 106 [555]557 hello 106 [556]558 hello 106 [557]559 hello 106 [558]560 hello 106 [559]561 hello 106 [560]562 hello 106 [561]563 hello 106 [562]564 hello 106 [563]565 hello 106 [564]566 hello 106 [565]567 hello 106 [566]568 hello 106 [567]569 hello 106 [568]570 hello 106 [569]571 hello 106 [570]572 hello 106 [571]573 hello 106 [572]574 hello 106 [573]575 hello 106 [574]576 hello 106 [575]577 hello 106 [576]578 hello 106 [577]579 hello 106 [578]580 hello 106 [579]581 hello 106 [580]582 hello 106 [581]583 hello 106 [582]584 hello 106 [583]585 hello 106 [584]586 hello 106 [585]587 hello 106 [586]588 hello 106 [587]589 hello 106 [588]590 hello 106 [589]591 hello 106 [590]592 hello 106 [591]593 hello 106 [592]594 hello 106 [593]595 hello 106 [594]596 hello 106 [595]597 hello 106 [596]598 hello 106 [597]599 hello 106 [598]600 hello 106 [599]601 hello 106 [600]602 hello 106 [601]603 hello 106 [602]604 hello 106 [603]605 hello 106 [604]606 hello 106 [605]607 hello 106 [606]608 hello 106 [607]609 hello 106 [608]610 hello 106 [609]611 hello 106 [610]612 hello 106 [611]613 hello 106 [612]614 hello 106 [613]615 hello 106 [614]616 hello 106 [615]617 hello 106 [616]618 hello 106 [617]619 hello 106 [618]620 hello 106 [619]621 hello 106 [620]622 hello 106 [621]623 hello 106 [622]624 hello 106 [623]625 hello 106 [624]626 hello 106 [625]627 hello 106 [626]628 hello 106 [627]629 hello 106 [628]630 hello 106 [629]631 hello 106 [630]632 hello 106 [631]633 hello 106 [632]634 hello 106 [633]635 hello 106 [634]636 hello 106 [635]637 hello 106 [636]638 hello 106 [637]639 hello 106 [638]640 hello 106 [639]641 hello 106 [640]642 hello 106 [641]643 hello 106 [642]644 hello 106 [643]645 hello 106 [644]646 hello 106 [645]647 hello 106 [646]648 hello 106 [647]649 hello 106 [648]650 hello 106 [649]651 hello 106 [650]652 hello 106 [651]653 hello 106 [652]654 hello 106 [653]655 hello 106 [654]656 hello 106 [655]657 hello 106 [656]658 hello 106 [657]659 hello 106 [658]660 hello 106 [659]661 hello 106 [660]662 hello 106 [661]663 hello 106 [662]664 hello 106 [663]665 hello 106 [664]666 hello 106 [665]667 hello 106 [666]668 hello 106 [667]669 hello 106 [668]670 hello 106 [669]671 hello 106 [670]672 hello 106 [671]673 hello 106 [672]674 hello 106 [673]675 hello 106 [674]676 hello 106 [675]677 hello 106 [676]678 hello 106 [677]679 hello 106 [678]680 hello 106 [679]681 hello 106 [680]682 hello 106 [681]683 hello 106 [682]684 hello 106 [683]685 hello 106 [684]686 hello 106 [685]687 hello 106 [686]688 hello 106 [687]689 hello 106 [688]690 hello 106 [689]691 hello 106 [690]692 hello 106 [691]693 hello 106 [692]694 hello 106 [693]695 hello 106 [694]696 hello 106 [695]697 hello 106 [696]698 hello 106 [697]699 hello 106 [698]700 hello 106 [699]701 hello 106 [700]702 hello 106 [701]703 hello 106 [702]704 hello 106 [703]705 hello 106 [704]706 hello 106 [705]707 hello 106 [706]708 hello 106 [707]709 hello 106 [708]710 hello 106 [709]711 hello 106 [710]712 hello 106 [711]713 hello 106 [712]714 hello 106 [713]715 hello 106 [714]716 hello 106 [715]717 hello 106 [716]718 hello 106 [717]719 hello 106 [718]720 hello 106 [719]721 hello 106 [720]722 hello 106 [721]723 hello 106 [722]724 hello 106 [723]725 hello 106 [724]726 hello 106 [725]727 hello 106 [726]728 hello 106 [727]729 hello 106 [728]730 hello 106 [729]731 hello 106 [730]732 hello 106 [731]733 hello 106 [732]734 hello 106 [733]735 hello 106 [734]736 hello 106 [735]737 hello 106 [736]738 hello 106 [737]739 hello 106 [738]740 hello 106 [739]741 hello 106 [740]742 hello 106 [741]743 hello 106 [742]744 hello 106 [743]745 hello 106 [744]746 hello 106 [745]747 hello 106 [746]748 hello 106 [747]749 hello 106 [748]750 hello 106 [749]751 hello 106 [750]752 hello 106 [751]753 hello 106 [752]754 hello 106 [753]755 hello 106 [754]756 hello 106 [755]757 hello 106 [756]758 hello 106 [757]759 hello 106 [758]760 hello 106 [759]761 hello 106 [760]762 hello 106 [761]763 hello 106 [762]764 hello 106 [763]765 hello 106 [764]766 hello 106 [765]767 hello 106 [766]768 hello 106 [767]769 hello 106 [768]770 hello 106 [769]771 hello 106 [770]772 hello 106 [771]773 hello 106 [772]774 hello 106 [773]775 hello 106 [774]776 hello 106 [775]777 hello 106 [776]778 hello 106 [777]779 hello 106 [778]780 hello 106 [779]781 hello 106 [780]782 hello 106 [781]783 hello 106 [782]784 hello 106 [783]785 hello 106 [784]786 hello 106 [785]787 hello 106 [786]788 hello 106 [787]789 hello 106 [788]790 hello 106 [789]791 hello 106 [790]792 hello 106 [791]793 hello 106 [792]794 hello 106 [793]795 hello 106 [794]796 hello 106 [795]797 hello 106 [796]798 hello 106 [797]799 hello 106 [798]800 hello 106 [799]801 hello 106 [800]802 hello 106 [801]803 hello 106 [802]804 hello 106 [803]805 hello 106 [804]806 hello 106 [805]807 hello 106 [806]808 hello 106 [807]809 hello 106 [808]810 hello 106 [809]811 hello 106 [810]812 hello 106 [811]813 hello 106 [812]814 hello 106 [813]815 hello 106 [814]816 hello 106 [815]817 hello 106 [816]818 hello 106 [817]819 hello 106 [818]820 hello 106 [819]821 hello 106 [820]822 hello 106 [821]823 hello 106 [822]824 hello 106 [823]825 hello 106 [824]826 hello 106 [825]827 hello 106 [826]828 hello 106 [827]829 hello 106 [828]830 hello 106 [829]831 hello 106 [830]832 hello 106 [831]833 hello 106 [832]834 hello 106 [833]835 hello 106 [834]836 hello 106 [835]837 hello 106 [836]838 hello 106 [837]839 hello 106 [838]840 hello 106 [839]841 hello 106 [840]842 hello 106 [841]843 hello 106 [842]844 hello 106 [843]845 hello 106 [844]846 hello 106 [845]847 hello 106 [846]848 hello 106 [847]849 hello 106 [848]850 hello 106 [849]851 hello 106 [850]852 hello 106 [851]853 hello 106 [852]854 hello 106 [853]855 hello 106 [854]856 hello 106 [855]857 hello 106 [856]858 hello 106 [857]859 hello 106 [858]860 hello 106 [859]861 hello 106 [860]862 hello 106 [861]863 hello 106 [862]864 hello 106 [863]865 hello 106 [864]866 hello 106 [865]867 hello 106 [866]868 hello 106 [867]869 hello 106 [868]870 hello 106 [869]871 hello 106 [870]872 hello 106 [871]873 hello 106 [872]874 hello 106 [873]875 hello 106 [874]876 hello 106 [875]877 hello 106 [876]878 hello 106 [877]879 hello 106 [878]880 hello 106 [879]881 hello 106 [880]882 hello 106 [881]883 hello 106 [882]884 hello 106 [883]885 hello 106 [884]886 hello 106 [885]887 hello 106 [886]888 hello 106 [887]889 hello 106 [888]890 hello 106 [889]891 hello 106 [890]892 hello 106 [891]893 hello 106 [892]894 hello 106 [893]895 hello 106 [894]896 hello 106 [895]897 hello 106 [896]898 hello 106 [897]899 hello 106 [898]900 hello 106 [899]901 hello 106 [900]902 hello 106 [901]903 hello 106 [902]904 hello 106 [903]905 hello 106 [904]906 hello 106 [905]907 hello 106 [906]908 hello 106 [907]909 hello 106 [908]910 hello 106 [909]911 hello 106 [910]912 hello 106 [911]913 hello 106 [912]914 hello 106 [913]915 hello 106 [914]916 hello 106 [915]917 hello 106 [916]918 hello 106 [917]919 hello 106 [918]920 hello 106 [919]921 hello 106 [920]922 hello 106 [921]923 hello 106 [922]924 hello 106 [923]925 hello 106 [924]926 hello 106 [925]927 hello 106 [926]928 hello 106 [927]929 hello 106 [928]930 hello 106 [929]931 hello 106 [930]932 hello 106 [931]933 hello 106 [932]934 hello 106 [933]935 hello 106 [934]936 hello 106 [935]937 hello 106 [936]938 hello 106 [937]939 hello 106 [938]940 hello 106 [939]941 hello 106 [940]942 hello 106 [941]943 hello 106 [942]944 hello 106 [943]945 hello 106 [944]946 hello 106 [945]947 hello 106 [946]948 hello 106 [947]949 hello 106 [948]950 hello 106 [949]951 hello 106 [950]952 hello 106 [951]953 hello 106 [952]954 hello 106 [953]955 hello 106 [954]956 hello 106 [955]957 hello 106 [956]958 hello 106 [957]959 hello 106 [958]960 hello 106 [959]961 hello 106 [960]962 hello 106 [961]963 hello 106 [962]964 hello 106 [963]965 hello 106 [964]966 hello 106 [965]967 hello 106 [966]968 hello 106 [967]969 hello 106 [968]970 hello 106 [969]971 hello 106 [970]972 hello 106 [971]973 hello 106 [972]974 hello 106 [973]975 hello 106 [974]976 hello 106 [975]977 hello 106 [976]978 hello 106 [977]979 hello 106 [978]980 hello 106 [979]981 hello 106 [980]982 hello 106 [981]983 hello 106 [982]984 hello 106 [983]985 hello 106 [984]986 hello 106 [985]987 hello 106 [986]988 hello 106 [987]989 hello 106 [988]990 hello 106 [989]991 hello 106 [990]992 hello 106 [991]993 hello 106 [992]994 hello 106 [993]995 hello 106 [994]996 hello 106 [995]997 hello 106 [996]998 hello 106 [997]999 hello 106 [998]1000 hello 106 [999]1001 hello 106 [1000]
[root@VM-4-9-centos KongQing]#
cat指令是从第一行打印文本内容!!!
tac是逆序打印文本内容
但是两者不还是会查看大文本,适合小文本或者代码片段!
-n 对输出的所有行编号
q 退出more
[atong@LiWenTong ~]$ ls -l / | more
total 162
drwxr-xr-x 2 root root 4096 Apr 25 05:39 bin
drwxr-xr-x 4 root root 1024 Apr 25 04:11boot
drwxr-xr-x 9 root root 3820 May 4 23:20 dev
drwxr-xr-x 84 root root 4096 May 5 00:37 etc
[root@VM-4-9-centos KongQing]# more -10 test.txt
# 打印文本的前十行
hello 106 [0]
hello 106 [1]
hello 106 [2]
hello 106 [3]
hello 106 [4]
hello 106 [5]
hello 106 [6]
hello 106 [7]
hello 106 [8]
hello 106 [9]
--More--(0%)
less 工具也是对文件或其它输出进行分页显示的工具,应该说是linux正统查看文件内容的工具,功能极其强大。 less 的用法比起
more 更加的有弹性。在 more 的时候,我们并没有办法向前面翻, 只能往后面看 但若使用了 less 时,就可以使用
[pageup][pagedown] 等按键的功能来往前往后翻看文件,更容易用 来查看一个文件的内容! 除此之外,在 less
里头可以拥有更多的搜索功能,不止可以向下搜,也可以向上搜
。
less与more类似,但使用less可以随意浏览文件,而more仅能向前移动,却不能向后移动,而且less在查看之前
不会加载整个文件。
-i 忽略搜索时的大小写
-N 显示每行的行号
/字符串:向下搜索“字符串”的功能
?字符串:向上搜索“字符串”的功能
n:重复前一个搜索(与 / 或 ? 有关)
N:反向重复前一个搜索(与 / 或 ? 有关) q:quit
less test.txt
使用less查看的时候,可以上下键进行查看
less和more适合查看大文本
可以在光标处输入/然后再输入你想查找的东西即可
head 与 tail 就像它的名字一样的浅显易懂,它是用来显示开头或结尾某个数量的文字区块,head 用来显示档案的 开头至标准输出中,而
tail 想当然尔就是看档案的结尾。
head 用来显示档案的开头至标准输出中,默认head命令打印其相应文件的开头10行。
-n<行数> 显示的行数
tail 命令从指定点开始将文件写到标准输出.使用tail命令的-f选项可以方便的查阅正在改变的日志文件,tail - ffilename会把filename里最尾部的内容显示在屏幕上,并且不但刷新,使你看到最新的文件内容.
-f 循环读取
-n<行数> 显示行数
有一个文件共有100行内容,请取出第50行内容
seq 1 100 > test # 生成1到100的序列装入test
方法1 head -n50 test > tmp #将前50行装入临时文件tmp
tail -n1 tmp #得到中建行
方法2 head -n50 test | tail -n1
[root@VM-4-9-centos KongQing]# less test.txt
[root@VM-4-9-centos KongQing]# head -3 test.txt
hello 106 [0]
hello 106 [1]
hello 106 [2]
[root@VM-4-9-centos KongQing]# tail -3 test.txt
hello 106 [998]
hello 106 [999]
hello 106 [1000]
[root@VM-4-9-centos KongQing]# head -101 test.txt > tem.txt
[root@VM-4-9-centos KongQing]# tail -3 tem.txt
hello 106 [98]
hello 106 [99]
hello 106 [100]
【>】重定向符将内容写入后面的文本文件中
[root@VM-4-9-centos KongQing]# head -101 test.txt | tail -3
hello 106 [98]
hello 106 [99]
hello 106 [100]
并逆置,提前前三行
十分感谢你可以耐着性子把它读完和我可以坚持写到这里,送几句话,对你,也对我:
1.有时候你可以自私,你不必坚强,你可以哭泣,你可以做任何别人无法理解的事情来发泄你的烦恼(别犯法),当你休息好,要记得再出发。
2.很多成就,大的成就小的成就,都是在痛苦,挫折,困难中收获的。只做简单的事情,你没法成长也很正常。
3.注意健康,好好活着。来人间一趟不容易。
4.当你害怕时不要退缩,我劝你迎难而上,如果你是个小朋友,在学校被人揍了,一定要当场给我揍回去,但是反击适当,不要太重。哪怕打不过,下一次他揍你之前也会好好想想。如果你不反击,他连想都不会想。
5.如果有一天,让你心动的再也感动不了你,让你愤怒的再也激怒不了你,让你悲伤的再也不能让你流泪,你便知道这时光、这生活给了你什么,你为了成长,付出了什么。
最后如果觉得我写的还不错,请不要忘记点赞✌,收藏✌,加关注✌哦(。・ω・。)
愿我们一起加油,奔向更美好的未来,愿我们从懵懵懂懂的一枚菜鸟逐渐成为大佬。加油,为自己点赞!
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