Why does “$(( ~33 ))” produce -34?
NOT x = −x − 1
Unix & Linux
Need a loop to sleep for a fraction of second
On my machine I need to execute a cycle that iterates 1 simple command that must have a delay expressed in fractions of second.
Remap keyboard on the Linux console
I’m using Debian and I want to remap my keyboard because it has some problem. I googled and found xmodmap. But it doesn’t work in graphicless mode, like tty1.
What are the differences between rdesktop and xfreerdp?
rdesktop and xfreerdp are both linux clients for RDP.
What is the terminal’s graphic API?
How can certain programs set background and font colors, write characters to the same location on screen (e.g. to the third row, fifth column) more than once?
Edit home directory for an LDAP user in Linux
I have an LDAP user who accesses a server based on having the appropriate LDAP host attribute via sssd. This user does not show up in /etc/passwd because he is not local. How do I modify his home dir location if he has already logged in and it was created in the default location? RHEL 6 Is it just usermod -d /new/location -m?
How to check, which limit was exceeded? (Process terminated because of ulimit. )
Let’s assume process runs in ulimited environment :
Kill backgrounded SSH when shell exits
I’m trying to spawn an SSH from my bash profile script that runs in the background for connection sharing (via its control socket). The problem I’m running into is a reliable way to ensure the SSH doesn’t stay running once the TTY is closed (or more directly; once the parent bash shell has exited).
Systemd linked unit files on mounted disk fail to load
We have an internal application with systemd services that we want to deploy outside of the normal systemd directories (/etc/systemd/system and /usr/lib/systemd/system). That location is on another disk (/mnt/data in the example).
Where are the contents of /proc of the Linux kernel documented?
Is there a site someplace that lists the contents of /proc and what each entry means?