Unix & Linux Weekly Newsletter - Tuesday, March 31, 2015

Top new questions this week: `command .*` acts on the parent directory Someone of our team wanted to recursively change the user permissions on all hidden directories in a users home directory. To do so he executed the following command: cd /home/username chown -R ... / bash / shell / directory / wildcards / dot-files   asked by g000ze 20 votes answered by pgoetz 16 votes Why is "grep keyword" causing the terminal to stand by forever? When I type "grep doc" in the terminal, it just don't do anything, stopping the terminal from doing anything else before I escape using Ctrl+C or Z. I know this isn't how I'm supposed to use grep, ... / grep   asked by March3April4 18 votes answered by Arkadiusz Drabczyk 28 votes Where is "export var=value" not available? I have picked up -- probably on Usenet in the mid-1990s (!) -- that the construct export var=value is a Bashism, and that the portable expression is var=value export var I have been advocating ... / shell / history / compatibility   asked by tripleee 15 votes answered by jlliagre 17 votes How can I implement a circular flow of data among interconnected commands? I know of two types how commands can be connected with each other: by using a Pipe (putting std-output into std-input of the next command). by using a Tee (splice the output into many ... / shell / command-line / scripting / pipe   asked by Abdul Al Hazred 13 votes answered by John1024 9 votes Transfer a file over a unstable SSH connection I'm trying to upload some big files (around 10GB) with a slow upload speed (200kb/s) on a often disconnected SSH connection (due to poor network conditions). I'm trying to use scp, but if there is a ... / ssh / scp / file-copy   asked by blue112 10 votes answered by GMaster 18 votes Is using "while true" to keep a script alive a good idea? I'm just jumping into unix from a different world, and wanted to know if while true do /someperlscript.pl done The perl script itself internally has a folder/file watcher that executes when ... / shell / perl   asked by Abhinav Gujjar 8 votes answered by jlliagre 11 votes Can scp create a directory if it doesn't exist? I want to use scp to upload files but sometimes the target directory may not exist. Is it possible to create the folder automatically? If so, how? If not, what alternative way can I try? / scp   asked by Aw Qirui Guo 7 votes answered by Warren Young 7 votes Greatest hits from previous weeks: How do I set my DNS on Ubuntu 14.04? Most of the info I see online says to edit /etc/resolv.conf, but any changes I make just get overridden. $ cat /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by ... / ubuntu / dns / dnsmasq   asked by Seán Hayes 42 votes answered by Seán Hayes 2 votes Uploading directories with sftp? I'm having some trouble uploading directories(which contain other directories a few levels deep) by sftp. I realize I could work around this by gzipping, but I don't see why that's necessary. Anyway, ... / linux / ssh / sftp   asked by Earlz 29 votes answered by Jander 5 votes Can you answer these? rsync's --link-dest option does not link identical files if an old file exists One might think that --link-dest'ing to an identical file would work in all cases. But it does not when the file exists, even if the file is out of date/has different contents. It is because of this, ... / rsync   asked by math 3 votes Why reading from and writing to framebuffer shows no effect ? I read a very short description of how to make a Screenshot by making use of the file which represents the framebuffer /dev/fb0. in order to write the screen content: cat /dev/fb0 > file in ... / command-line / devices / framebuffer   asked by Abdul Al Hazred 2 votes How to make zsh correct remember my decision I have enabled correction (I wouldn't call it autocorrection specifically because of this issue) in zsh by enabling setopt correct in my .zshrc. Now, when I type dtae in a terminal, I get: dtae ... / zsh / autocorrection   asked by shrx 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