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What does gt; dev null 2 gt; 1 mean in this article of crontab . . . ls 2> 1 > dev null Indeed, in the later case, file descriptor 2 is set to the current address of file descriptor ``1 (which is stdout at this very moment), and then the file descriptor 1 is redirected to dev null
How does gt; dev null 2 gt; 1 work? - Unix Linux Stack Exchange In those cases > dev null 2> 1 will achieve the desired result However this is a little confusing to me Can someone break down exactly how this works? What is particularly confusing is the 1 part If I see I think "run in background " Don't know what the 1 is for, what if it was a 2?
gt; dev null 2 gt; 1 の順番・意味について | teratail 「commandA 2>$1 > dev null」と 「commandA > dev null」に違いはあるのか 悩んでいる経緯 現在シェルスクリプトを勉強中の初心者です。 コマンドの標準出力とエラー出力両方を表示しないオプションとして タイトルのオプションがあると思います。 そこで
Why we need to have 2 gt; 1 in dev null 2 gt; 1? - Unix Linux . . . Alternatively You could also use ls file1 file12 2> dev null 1> 2 with the same effect—which first redirects stderr to dev null and then redirects stdout to point to the same place stderr is currently pointing to
redirecting to dev null - Unix Linux Stack Exchange I'm trying to understand the use of dev null 2> 1 here At first, I thought this script uses dev null in order to gracefully ignore errors, without causing the script to crash (kind of like try catch exception handling in programming languages)
What does 2 gt; 1 in this command mean? [duplicate] So > dev null 2> 1 first redirects stdout to dev null and then redirects stderr there as well This effectively silences all output (regular or error) from the wget command
Difference between gt; dev null 2 gt; 1 and lt; dev null gt; dev null program_name > dev null 2> 1 But recently I came across this webpage where the following method was recommended: program_name < dev null > dev null Now, I know what the first one means It means to point stderr to stdout and stdout to dev null i e both stderr and stdout is now pointed to null But what does the second one means?