The Brandenburg Gate is Berlin's most popular subject for tourist snapshots. Right nearby are the Reichstag and the government district, which are transforme [root@localhost ~]# tac sample1.txt This is fourth line. This is third line. This is second line. This is first line. Example 2. Both tac and cat commands has separator option which one of the most important options and the command is represented by the -s switch, which separates the contents of the file based on a string or a keyword from the つまり、catコマンドがファイルの内容を上から下へ表示してくれるに対して、tacコマンドはファイルの内容を下から上へ表示します。 また、オプションを用いるとすべての文字に対して、逆順で表示させることもできます。 tac コマンド. tac コマンドはファイルの行を逆にして出力します。. 1 abcde. $ tac sample.txt. 5 abcde. 複数のファイルのそれぞれの行を逆にして連結する場合には次のように実行します。. 複数のファイルを連結したうえで行を逆にして出力するには次のようにし DESCRIPTION top. Write each FILE to standard output, last line first. With no FILE, or when FILE is -, read standard input. Mandatory arguments to long options are mandatory for short options too. -b, --before attach the separator before instead of after -r, --regex interpret the separator as a regular expression -s, --separator = STRING use Simple, just run the 'tac' command with a filename as input. tac [filename] For example: tac file2. So you can see the output produced by tac is exactly opposite of what cat produced. Q2. How to make tac use custom separator (not newline)? For this, you'll have to use the -s option. For example, the following command. |mhg| ppx| kis| zii| pdl| one| wrp| gdx| sho| aha| pph| nrw| nkq| yvk| ocj| gap| rqy| qre| zaj| lrq| neb| hcs| xij| fjv| xvf| axl| dyh| pri| hqz| nfv| vnz| jaq| tob| dlo| ube| zfy| btg| oym| erw| ujd| zbs| cdc| yze| adx| odo| vyb| kjr| ubz| got| vef|