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I want to change all files in directory creation/modification date to 0/0/0. I tried to use find $PWD -exec touch -m -d '0/0/0' {} + command. …

'Explain the difference between running in ring 0 on x86 and running as UID 0 in Linux. Give an example of something that each one enables, but the other does not.' … My current understanding is that ring 0 on x86 is the most privileged OS level and that kernel code is run in ring 0. UID 0 is the linux superuser that can essentially run anything. …

I have heard that RAID 1+0 is more fault-reliant than RAID 0+1, because a secondary drive failure is more likely to cause data loss in RAID 0+1 than RAID 1+0. …

In my kernel log, I can see entries like: [ 0.765510] sd 3:0:0:0: [sdb] 3907029168 512-byte logical blocks: (2.00 TB/1.81 TiB) and when something fails, it's usually something like: [ 6007.433977 …

I am trying to use case to run this function if [[ $input -gt 0 || $input -eq 0 ]]; Is it possible to put in case to test the input for greater than 0 or equal to 0, or even 0 and less than 0, in case …

friends, I don't know why "0.0u 0.0s 0:00.00 0.0% 0+0k 0+0io 0pf+0w" (and many lines like this) will display when I run some C shell script, but not when some others run. …

I'm using a signal handler with siginfo_t field for gathering some informations, if the field si_pid is 0 it means that the sender of the signal is the same who receives it? … Example: Process 1 sends SIGALRM, Process 1 signal handler's output relative to si_pid equals 0, this means that it's like Process1 is doing raise(SIGALRM)? …

The first is the id that i want to store the second is a 0 and i guess its the result code. … This is my code import os cmd = "/path/to/ctl so list | tail -1 | awk '{print $1}'" event_id = os.system(cmd) print(event_id) and this is the result: 225 0 how can i delete that 0. Thanks …

I find that centos7.8 is using "net.ifnames=0" without "biosdevname=0" in its kernel parameters, the result seems be same: I got traditional nic name such as eth0. … Just curious, what is the difference of "net.ifnames=0" and "biosdevname=0"? …

I am learning the shell commands and came across the short tags eg.[0-9],[[:digit:]] etc.. … the directory 0.txt and 9.txt and it deleted the files 0.txt and 9.txt .I guessed that the expression [0-9] is expanded and then read as 0.txt 1.txt 2.txt .... …

I was suprised to discover that although it does generate a runtime error, the exit status is still 0: $ echo 41 + 1 | bc 42 $ echo $? … 0 $ echo 42/0 | bc Runtime error (func=(main), adr=6): Divide by zero $ echo $? 0 Why does the bc utility not fail with a non-zero exit status? …

When the RESULT variable receives an empty value it does not echo "-1", it returns a 0. Why does bash turn the empty value into 0? …

I'm tring to use ss but it seems to always produce 0 as a exit code , also if the expression is nor matched. … On this host I've a service listening on port 53 , it matches and has exit code 0 $ ss -ntl sport = :53 ; echo $? …

I just discovered that substr() in awk accepts either 0 or 1 as the initial index in a string. … For consistency with the documentation and with the fact that index() returns 1 for the first position and 0 for no match, it would be good policy to always use 1. …

My question is like this: I want to check all the rows from the 4th column till the end whether the field values are only 0 (formatted as 0.00) , 1 (formatted as 1.00) or NA, and if so replace the 0 values … = 1 { for (i = 4; i <= NF; ++i) { if ($i = "0" || $i= "1") { $i = "0.01"; } } } { print $0 } Thanks in advance! …