grep : ‘+’ special character
At that link to the POSIX specification you gave, you can read: An ordinary character is a BRE that matches itself: any character … Read more
Unix and Linux
File location for Syslogs in Centos machine
File location for Syslogs in Centos machine
“service {FOO} start” vs. “/etc/init.d/{FOO} start”? [closed]
“service {FOO} start” vs. “/etc/init.d/{FOO} start”? [closed]
How to loop through json file?
A very simple sample using python: #!/usr/bin/env python import sys import json def print_first(data): for item in data[“items”]: if item[“name”].startswith(“first”): print item[“hostRef”][“hostId”] def … Read more
Making environment variables available for downstream processes started within an init.d script
In addition to using Environment directive in the systemd service itself as suggested in this answer, another option is the EnvironmentFile directive. Please … Read more
How to work out why Apache is attempting “execmem”?
How to work out why Apache is attempting “execmem”?
Why do we need initramfs and initrd
There are many reason to have an initramfs, some are below. When you need have a separate /usr,/var as some distros depends on … Read more
Unable to verify the kernel signature “gpg: Can’t check signature: public key not found”
Unable to verify the kernel signature “gpg: Can’t check signature: public key not found”
ZFS: send / receive with rolling snapshots
Snapshots have arbitrary names. And zfs send -i [snapshot1] [snapshot2] can send the difference between any two snapshots. You can make use of … Read more
Universal way to logout from terminal via dbus
Universal way to logout from terminal via dbus
