Copyright 1998 - 2023 DPG Media B.V. Thu, 12 Jan 2023 04:06:59 GMT Thu, 12 Jan 2023 04:06:59 GMT https://tweakers.net/reviews/76 Tweakblogs.net is the weblog service provided by Tweakers, the largest hardwaresite and techcommunity in the Netherlands. https://tweakblogs.net/ https://tweakers.net/g/if/logo.gif Tweakblogs.net en https://vanaalten.tweakblogs.net gathering@tweakers.net https://vanaalten.tweakblogs.net/blog/19686/custom-debian-live-iso#r_275912 @sfranken "Don't use backticks anymore, that's been deprecated for quite a while." I know. I just can't get used to the $(...) notation. Too much typing! But good point about copying the current resolv.conf - makes the script at least easier to reuse by others. I'll probably update the blog somewhere in the near future with all these minor changes.vanaalten https://vanaalten.tweakblogs.net/blog/19686/custom-debian-live-iso#r_275912#reacties https://vanaalten.tweakblogs.net/blog/19686#r_275912 Fri, 15 Oct 2021 09:28:51 GMT https://vanaalten.tweakblogs.net/blog/19686/custom-debian-live-iso#r_275910 Don't use backticks anymore, that's been deprecated for quite a while. Use $(...) for shell commands and ${...} for variables, like so: code:1 2 3 4 5 6 7 8 9 10 #!/bin/bash iso=$(wget -O - -o /dev/null https://cdimage.debian.org/debian-cd/current-live/amd64/iso-hybrid | grep amd64-gnome.iso | sed 's/^.*a href="//;s/".*$//') if [[ ${?} -ne 0 ]]; then echo "Couldn't determine Debian ISO filename." exit 2 fi newiso=$(echo ${iso} | sed 's/gnome/gnome-personal/') For the resolv.conf thing, you can also copy the current one: code:1 sudo cp -v --dereference /etc/resolv.conf squashfs/etc/resolv.confsfranken https://vanaalten.tweakblogs.net/blog/19686/custom-debian-live-iso#r_275910#reacties https://vanaalten.tweakblogs.net/blog/19686#r_275910 Fri, 15 Oct 2021 09:11:25 GMT https://vanaalten.tweakblogs.net/blog/19686/custom-debian-live-iso#r_275908 @eXcyle Clear, thanks! And indeed, just tested the live image and the nameserver is hard coded in /etc/resolv.conf - so better to remove it.vanaalten https://vanaalten.tweakblogs.net/blog/19686/custom-debian-live-iso#r_275908#reacties https://vanaalten.tweakblogs.net/blog/19686#r_275908 Fri, 15 Oct 2021 07:01:09 GMT https://vanaalten.tweakblogs.net/blog/19686/custom-debian-live-iso#r_275904 code:1 echo "nameserver 192.168.1.1" > squashfs/etc/resolv.conf Not sure why the first line is needed - but if I don't add this, running 'apt' in the chroot environment later on doesn't work because it cannot resolve the URL for the Debian repositories.when you use the chroot command, you change the root directory ( / and all relative subdirectories beneath it) for the command that follows to the directory you specified ( /root/squashfs/ ). code:1 chroot squashfs /bin/bash -c "apt -y update && apt -y upgrade && apt -y autoremove" so using this command you start /bin/bash and set/redirect the root directory to be your /root/squashfs directory When the apt command runs within the bash shell you just spawned, it tries to locate your nameserver by reading the /etc/resolv.conf file, but because of the chroot, it is actualy reading the content from /root/squashfs/etc/resolv.conf, and not the /etc/resolv.conf file from your normal OS filesystem. Without the chroot command apt would install the software into your actual system and not the new LiveCD filesystem. You might also want to remove the nameserver line from the "/root/squashfs/etc/resolv.conf" file when you are done, otherwise the nameserver would be hardcoded into the new live cd (it should get overwritten by the dhcp-service, but stilleXcyle https://vanaalten.tweakblogs.net/blog/19686/custom-debian-live-iso#r_275904#reacties https://vanaalten.tweakblogs.net/blog/19686#r_275904 Thu, 14 Oct 2021 22:37:53 GMT