To kill the outer loop I usually add a sleep command and press CTRL-C some more times: while :; do LONGTIME_COMMAND; sleep 1; done. Please notice: the colon behind while is …

2024年2月27日 · I connected my university-vpn via openvpn on Windows, Ubuntu and Manjaro. Windows worked instantly, no configuration was needed. When using any Linux-System, …

2011年8月7日 · I encountered the following in /var/log/syslog on Ubuntu 14.04. Mar 24 09:41:19 ripple pulseaudio[4838]: [autospawn] core-util.c: Failed to create secure directory …

I have problem sending AT commands to my USB modem. At first I tried php-serial class, but when I was reading data, I got endless loop with strange data. Then I tried to debug problem …

I use screen for my command-line tasks while managing the servers where I work. I usually run small commands (mostly file-system tasks) but sometimes I run more extensive tasks (like …

2021年4月9日 · Also, in while [ true ], the test checks if true is a non-empty string. It obviously is, so this does work in giving an endless loop. But [ false ] would also be always true, so a test …

2018年7月26日 · I've bought a new Asus laptop and it has an Endless OS installed. I want Fedora to be my only os so I've installed Fedora from USB but Endless is still on my laptop and I can't …

I have a program which produces useful information on stdout but also reads from stdin. I want to redirect its standard output to a file without providing anything on standard input. So far, so goo...

2016年1月10日 · When trying to redirect to /dev/null and /dev/zero, the output it is discarded. It seems both /dev/null and /dev/zero accept and discard all input. So, what is the difference …

2013年1月31日 · 64 /dev/zero is a special file (in this case, a pseudo-device) that provides an endless stream of null characters (so hex 0x00)? That's why your cat is not outputting anything …