Trap Ctrl-C in a Bash script
How to trap Ctrl-C in a Bash script?
The piece of code:
# trap ctrl-c and call ctrl_c()
trap ctrl_c INT
function ctrl_c() {
echo
echo "Ctrl-C by user"
# do the jobs
exit
}
Similar Posts
Linux boots failed with “sulogin: can not open password database” while the /etc/passwd and /etc/shadow files look fine
ByEric Ma
Linux boots failed with “sulogin: can not open password database” while the /etc/passwd and /etc/shadow files look fine. How to fix this? The OS is Fedora 22. You may try this trick Step 1: boot Linux with rw init=/bin/bash following this tutorial. Step 2: after Linux booted, disable SELinux following this tutorial. Reboot. If it…
Git Merging FAQs
ByEric Ma
git merge is frequently used during development of projects managed by git. There are many common questions about git merge and I find most are solved and discussed on StackOverflow. Here, I summarize useful ones so that others who want to learn git merge need to do the search again. Merge, rebase, fast forward and…
How to convert .pptx slides to .jpg or .png images on Linux in command line?
ByEric Ma
How to convert .pptx slides to .jpg or .png images on Linux in command line? This following method works best for me. First, convert .pptx file to .pdf using libreoffice: libreoffice –headless –convert-to pdf file.pptx –headless makes libreoffice run in batch mode and not start the GUI. The pdf file will be named file.pdf by…
Make Grub2 Boot Older Kernel Version in Ubuntu 20.04
In a Linux system, we may have multiple kernels installed. Usually, it is the latest kernel configured to be the default one the system boot loader will use during automatic boot if there is no manual kernel choosing. In many cases, such as there is no driver ready yet for some devices in newer kernels,…
Linux Kernel: drm/i915/guc: Don’t enable GuC/HuC in auto mode on pre-Gen11
ByTony
This change “drm/i915/guc: Don’t enable GuC/HuC in auto mode on pre-Gen11” (commit 87d855e) in Linux kernel is authored by Michal Wajdeczko <michal.wajdeczko [at] intel.com> on Fri Jul 12 11:14:44 2019 +0000. Description of “drm/i915/guc: Don’t enable GuC/HuC in auto mode on pre-Gen11” The change “drm/i915/guc: Don’t enable GuC/HuC in auto mode on pre-Gen11” introduces changes…
Quick method to sniff the data left on a Linux VM in the public cloud
ByQ A
VM disks in public cloud may be shared by customers. This is privacy problem. Is there a quick method to sniff the data left on a Linux VM? One possible method: # dd if=/dev/xvda bs=1M | strings -n 100 > strings.txt Using the dd and strings which are pervasive on Linux systems. Read more: Data…