Unix & Linux Weekly Newsletter - Tuesday, September 29, 2015

Top new questions this week: Official list of programs to be included in Linux? Is there a standard that I can refer to for the list of programs (e.g. cat, ls) that must be included in Linux? / linux / shell   asked by Ron Vince 20 votes answered by muru 29 votes Search for a previous command with the prefix I just typed We can use up and down arrow to navigate in command history. In some IDE, such as matlab, if we input sth and then press the arrow keys, we stroll among only the history commands starting with what ... / bash / shell / command-history   asked by Lee 15 votes answered by John1024 23 votes timeout, breaking pipes and wc I had an idea to quickly benchmark some decompression programs. E.g. for gz, I would run the command: timeout 10 zcat foo.gz | wc -c Which would measure the amount of data the decompressor could ... / pipe / timeout   asked by P.Péter 15 votes answered by Marco 19 votes What is the difference between * and *.* while copying? What is the difference between following 2 commands? cp -rp /dir1/*.* /dir2/ cp -rp /dir1/* /dir2/ / shell / shell-script / command-line / cp   asked by stany 13 votes answered by David Dai 19 votes Why does niceness range from -20 to 19? The nice command allows you to adjust the scheduling priority ("niceness") of a program. On all Unix-like systems I've used, niceness is specified by a range of integers, where -20 is the most ... / history / scheduling / nice / priority   asked by Psychonaut 13 votes answered by cxw 5 votes Why is the maximum PID in a 64-bit Linux system 2^22? Why not 2^62, or 2^31 or anything else? What is the maximum value of the PID of a process? / linux / process   asked by Teresa 9 votes answered by muru 18 votes How can I configure such that I can always SSH to my system over the internet on a dynamic IP? Basically I want to be able to do something like teamviewer, where regardless of what the network configuration is, as long as both my ssh server (Machine A) and ssh client (Machine B) have internet ... / networking / ssh   asked by user2813274 8 votes answered by Anthon 7 votes Greatest hits from previous weeks: How can I fix "cannot find a valid baseurl for repo" errors on CentOS? I finished installing CentOS 6, but when I tried running yum update I got: [root@centos6test ~]# yum update Loaded plugins: fastestmirror, refresh-packagekit Determining fastest mirrors Could not ... / centos   asked by user1002795 25 votes answered by Jorge 22 votes How do I make my pc speaker beep Using bash, how can I make the pc speaker beep? Something like echo 'beepsound' > /dev/pcspkr would be nice. / command-line   asked by Stefan 52 votes answered by echox 37 votes Can you answer these? Procedure to figuring out U-Boot environment location from binary/hex dump TL;DR: I have a u-boot (version 1.6.1) enabled board, I have dumped the partition that contains the environment variables to a binary file using dd and now am stumped at finding out how to translate ... / embedded / boot-loader / u-boot / hexdump   asked by Asmyldof 3 votes How do I increase the maximum swap space on Mac OS X? On Mac OS X Yosemite 10.10.5, when I try to run a calculation that needs to allocate and use 128 GB of memory (it is a command line program written in C), the kernel kills my process with extreme ... / osx / configuration / swap / virtual-memory / darwin   asked by Mark Adler 5 votes Where can I set advanced settings (like fast_reauth) in network-manager? Is there any possibility to change "advanced" default settings in Linux Mint's network-manager (like fast_reauth=0)? I can see that there are config files in /etc/NetworkManager/system-connections/, ... / linux-mint / networkmanager / settings   asked by colidyre 3 votes

Subscribe to more Stack Exchange newsletters Unsubscribe from this newsletter or change your email preferences by visiting your subscriptions page on stackexchange.com. Questions? Comments? Let us know on our feedback site. If you no longer want to receive mail from Stack Exchange, unsubscribe from all stackexchange.com emails. Stack Exchange, Inc. 110 William St, 28th Floor, NY NY 10038 <3