Bash-Oneliner
Skip to the content. Bash-Oneliner I am glad that you are here! I was working on bioinformatics a few years ago and was amazed by those single-word bash commands which are much faster than my dull scripts, time saved through learning command-line shortcuts and scripting. Recent years I am working on cloud computing and I keep recording those useful commands here. Not all of them is oneliner, but i
How to sleep for 1 second between each xargs command?
For example, if I execute ps aux | awk '{print $1}' | xargs -I {} echo {} I want to let the shell sleep for 1 second between each echo. How can I change my shell command?
Using xargs with input from a file
Say I have a file with the following bob john sue Now these directly corrospond to (in this case) URL pattern such as http://example.com/persons/bob.tar, john.tar, sue.tar. I would like to take these lines and run them through xargs. I don't know what is passed to the command being executed though. How do I access the parameter either from the prompt (say I want to simply echo each line like cat f
大量のファイルをシェルのコマンドで一括リネームする | DevelopersIO
コマンド $ ls | sed -e s/\.txt// | awk '{print $1 ".txt " $1 "_document.md"}' | xargs -n 2 mv 戦略について まず前提として、ファイルのリネームを行うには、 xargs -n 2 mv にパイプで 元ファイル名 リネーム後のファイル名 のようなフォーマットの文字列を渡せば OK です。 $ ls before.txt $ echo "before.txt after.txt" before.txt after.txt $ echo "before.txt after.txt" | xargs -n 2 mv $ ls after.txt この文字列が複数行ある場合、 xargs -n 2 mv は1行ずつ順次処理します。 $ ls 1.txt 2.txt $ echo "1.txt 11.txt\n2.tx
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