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diff --git a/content/en/blog/commands/_index.md b/content/en/blog/commands/_index.md new file mode 100644 index 0000000..c061e46 --- /dev/null +++ b/content/en/blog/commands/_index.md @@ -0,0 +1,5 @@ +--- +title: "Commands" +linkTitle: "Commands" +weight: 40 +--- diff --git a/content/en/blog/commands/asterisk-call-you.md b/content/en/blog/commands/asterisk-call-you.md new file mode 100755 index 0000000..7dd65f3 --- /dev/null +++ b/content/en/blog/commands/asterisk-call-you.md @@ -0,0 +1,11 @@ +--- +title: "List active calls on asterisk" +linkTitle: "List active calls on asterisk" +date: 2018-09-25 +description: > + How to show active calls on an asterisk system +--- + +{{< highlight yaml >}} +watch -d -n1 'asterisk -rx “core show channels”' +{{< /highlight >}} diff --git a/content/en/blog/commands/asterisk-list-active-calls.md b/content/en/blog/commands/asterisk-list-active-calls.md new file mode 100755 index 0000000..73c712e --- /dev/null +++ b/content/en/blog/commands/asterisk-list-active-calls.md @@ -0,0 +1,14 @@ +--- +title: "How to have asterisk call you into a meeting" +linkTitle: "How to have asterisk call you into a meeting" +date: 2018-09-25 +description: > + How to have asterisk call you itself into a meeting +--- + +At alterway we sometimes have DTMF problems that prevent my mobile from joining a conference room. Here is something I use to have asterisk call me +and place me inside the room : + +{{< highlight yaml >}} +channel originate SIP/numlog/06XXXXXXXX application MeetMe 85224,M,secret +{{< /highlight >}} diff --git a/content/en/blog/commands/busybox-web-server.md b/content/en/blog/commands/busybox-web-server.md new file mode 100644 index 0000000..37f9ac6 --- /dev/null +++ b/content/en/blog/commands/busybox-web-server.md @@ -0,0 +1,13 @@ +--- +title: "Busybox web server" +linkTitle: "Busybox web server" +date: 2019-04-16 +description: > + Busybox web server +--- + +If you have been using things like `python -m SimpleHTTPServer`, here is something even more simple and lightweight to use : + +{{< highlight sh >}} +busybox httpd -vfp 80 +{{< /highlight >}} diff --git a/content/en/blog/commands/capture-desktop-video.md b/content/en/blog/commands/capture-desktop-video.md new file mode 100644 index 0000000..f56572a --- /dev/null +++ b/content/en/blog/commands/capture-desktop-video.md @@ -0,0 +1,13 @@ +--- +title: "Capture a video of your desktop" +linkTitle: "Capture a video of your desktop" +date: 2011-11-20 +description: > + Capture a video of your desktop +--- + +You can capture a video of your linux desktop with ffmpeg : + +{{< highlight sh >}} +ffmpeg -f x11grab -s xga -r 25 -i :0.0 -sameq /tmp/out.mpg +{{< /highlight >}} diff --git a/content/en/blog/commands/clean-conntrack-states.md b/content/en/blog/commands/clean-conntrack-states.md new file mode 100644 index 0000000..8a78930 --- /dev/null +++ b/content/en/blog/commands/clean-conntrack-states.md @@ -0,0 +1,17 @@ +--- +title: "Clean conntrack states" +linkTitle: "Clean conntrack states" +date: 2018-03-02 +description: > + Clean conntrack states +--- + +Here is an example of how to clean conntrack states that match a specific query on a linux firewall : + +{{< highlight sh >}} +conntrack -L conntrack -p tcp –orig-dport 65372 | \ +while read _ _ _ _ src dst sport dport _; do + conntrack -D conntrack –proto tcp –orig-src ${src#*=} –orig-dst ${dst#*=} \ + –sport ${sport#*=} –dport ${dport#*=} + done +{{< /highlight >}} diff --git a/content/en/blog/commands/date.md b/content/en/blog/commands/date.md new file mode 100644 index 0000000..e0b2bcc --- /dev/null +++ b/content/en/blog/commands/date.md @@ -0,0 +1,14 @@ +--- +title: "Convert unix timestamp to readable date" +linkTitle: "Convert unix timestamp to readable date" +date: 2011-01-06 +description: > + Convert unix timestamp to readable date +--- + +As I somehow have a hard time remembering this simple date flags as I rarely need it, I decided to write it down here : + +{{< highlight sh >}} +$ date -d @1294319676 +Thu Jan 6 13:14:36 GMT 2011 +{{< /highlight >}} diff --git a/content/en/blog/commands/dmidecode.md b/content/en/blog/commands/dmidecode.md new file mode 100644 index 0000000..c7bcc1f --- /dev/null +++ b/content/en/blog/commands/dmidecode.md @@ -0,0 +1,20 @@ +--- +title: "DMIdecode" +linkTitle: "DMIdecode" +date: 2011-02-16 +description: > + DMIdecode +--- + +DMIdecode to obtain Hardware informations. + +## Mose useful commands + +- System informations: `dmidecode -t1` +- Chassis informations: `dmidecode -t4` +- CPU informations: `dmidecode -t4` +- RAM informations: `dmidecode -t17` + +## Sources + +- `man 8 dmidecode` diff --git a/content/en/blog/commands/find-hardlinks.md b/content/en/blog/commands/find-hardlinks.md new file mode 100644 index 0000000..dd1b424 --- /dev/null +++ b/content/en/blog/commands/find-hardlinks.md @@ -0,0 +1,12 @@ +--- +title: "Find hardlinks to a same file" +linkTitle: "Find hardlinks to a same file" +date: 2018-03-02 +description: > + Find hardlinks to a same file +--- + +{{< highlight sh >}} +find . -samefile /path/to/file +{{< /highlight >}} + diff --git a/content/en/blog/commands/find-inodes-used.md b/content/en/blog/commands/find-inodes-used.md new file mode 100644 index 0000000..d9965a4 --- /dev/null +++ b/content/en/blog/commands/find-inodes-used.md @@ -0,0 +1,12 @@ +--- +title: "Find where inodes are used" +linkTitle: "Find where inodes are used" +date: 2018-04-25 +description: > + Find where inodes are used +--- + +{{< highlight sh >}} +find . -xdev -printf '%h\n' | sort | uniq -c | sort -k 1 -n +{{< /highlight >}} + diff --git a/content/en/blog/commands/git-import-commits.md b/content/en/blog/commands/git-import-commits.md new file mode 100644 index 0000000..5ec2bc1 --- /dev/null +++ b/content/en/blog/commands/git-import-commits.md @@ -0,0 +1,13 @@ +--- +title: "Import commits from one git repo to another" +linkTitle: "Import commits from one git repo to another" +date: 2018-09-25 +description: > + Import commits from one git repo to another +--- + +This imports commits from a repo in the `../masterfiles` folder and applies them to the repository inside the current folder : +{{< highlight sh >}} +(cd ../masterfiles/; git format-patch –stdout origin/master) | git am +{{< /highlight >}} + diff --git a/content/en/blog/commands/git-rewrite-commit-history.md b/content/en/blog/commands/git-rewrite-commit-history.md new file mode 100644 index 0000000..6d241ed --- /dev/null +++ b/content/en/blog/commands/git-rewrite-commit-history.md @@ -0,0 +1,13 @@ +--- +title: "Rewrite a git commit history" +linkTitle: "Rewrite a git commit history" +date: 2018-03-05 +description: > + Rewrite a git commit history +--- + +Here is how to rewrite a git commit history, for example to remove a file : +{{< highlight sh >}} +git filter-branch –index-filter "git rm --cached --ignore-unmatch ${file}" --prune-empty --tag-name-filter cat - -all +{{< /highlight >}} + diff --git a/content/en/blog/commands/ipmi.md b/content/en/blog/commands/ipmi.md new file mode 100644 index 0000000..93ca26d --- /dev/null +++ b/content/en/blog/commands/ipmi.md @@ -0,0 +1,19 @@ +--- +title: "ipmitool" +linkTitle: "ipmitool" +date: 2018-03-05 +description: > + ipmitool +--- + +- launch ipmi shell : `ipmitool -H XX.XX.XX.XX -C3 -I lanplus -U <ipmi_user> shell` +- launch ipmi remote text console : `ipmitool -H XX.XX.XX.XX -C3 -I lanplus -U <ipmi_user> sol activate` +- Show local ipmi lan configuration : `ipmitool lan print` +- Update local ipmi lan configuration : +{{< highlight sh >}} +ipmitool lan set 1 ipsrc static +ipmitool lan set 1 ipaddr 10.31.149.39 +ipmitool lan set 1 netmask 255.255.255.0 +mc reset cold +{{< /highlight >}} + diff --git a/content/en/blog/commands/mdadm.md b/content/en/blog/commands/mdadm.md new file mode 100644 index 0000000..1dbc3f8 --- /dev/null +++ b/content/en/blog/commands/mdadm.md @@ -0,0 +1,42 @@ +--- +title: "mdadm" +linkTitle: "mdadm" +date: 2011-11-15 +description: > + mdadm +--- + +## Watch the array status + +{{< highlight sh >}} +watch -d -n10 mdadm --detail /dev/md127 +{{< /highlight >}} + +## Recovery from livecd + +{{< highlight sh >}} +mdadm --examine --scan >> /etc/mdadm.conf +mdadm --assemble --scan /dev/md/root +mount /dev/md127 /mnt # or vgscan... +{{< /highlight >}} + +If auto detection does not work, you can still assemble an array manually : +{{< highlight sh >}} +mdadm --assemble /dev/md0 /dev/sda1 /dev/sdb1 +{{< /highlight >}} + +## Resync an array + +First rigorously check the output of `cat /proc/mdstat` +{{< highlight sh >}} +mdadm --manage --re-add /dev/md0 /dev/sdb1 +{{< /highlight >}} + +## Destroy an array + +{{< highlight sh >}} +mdadm --stop /dev/md0 +mdadm --zero-superblock /dev/sda +mdadm --zero-superblock /dev/sdb +{{< /highlight >}} + diff --git a/content/en/blog/commands/megacli.md b/content/en/blog/commands/megacli.md new file mode 100644 index 0000000..8eb32a8 --- /dev/null +++ b/content/en/blog/commands/megacli.md @@ -0,0 +1,11 @@ +--- +title: "MegaCLI" +linkTitle: "MegaCLI" +date: 2018-03-05 +description: > + MegaCLI for dell hardware investigations +--- + +- `megacli -LDInfo -LALL -aALL|grep state` +- `MegaCli -PDlist -a0|less` + diff --git a/content/en/blog/commands/omreport.md b/content/en/blog/commands/omreport.md new file mode 100644 index 0000000..b3d0ffd --- /dev/null +++ b/content/en/blog/commands/omreport.md @@ -0,0 +1,20 @@ +--- +title: "omreport" +linkTitle: "omreport" +date: 2018-03-05 +description: > + omreport +--- + +## Your raid status at a glance + +- `omreport storage pdisk controller=0 vdisk=0|grep -E '^ID|State|Capacity|Part Number'|grep -B1 -A2 Failed` + +## Other commands + +{{< highlight sh >}} +omreport storage vdisk +omreport storage pdisk controller=0 vdisk=0 +omreport storage pdisk controller=0 pdisk=0:0:4 +{{< /highlight >}} + diff --git a/content/en/blog/commands/qemu-nbd.md b/content/en/blog/commands/qemu-nbd.md new file mode 100644 index 0000000..ea09658 --- /dev/null +++ b/content/en/blog/commands/qemu-nbd.md @@ -0,0 +1,17 @@ +--- +title: "qemu-nbd" +linkTitle: "qemu-nbd" +date: 2019-07-01 +description: > + qemu-nbd +--- + +{{< highlight sh >}} +modprobe nbd max_part=8 +qemu-nbd -c /dev/nbd0 image.img +mount /dev/nbd0p1 /mnt # or vgscan && vgchange -ay +[...] +umount /mnt +qemu-nbd -d /dev/nbd0 +{{< /highlight >}} + diff --git a/content/en/blog/commands/qemu.md b/content/en/blog/commands/qemu.md new file mode 100644 index 0000000..b3beb2c --- /dev/null +++ b/content/en/blog/commands/qemu.md @@ -0,0 +1,31 @@ +--- +title: "Qemu" +linkTitle: "Qemu" +date: 2019-06-10 +description: > + Qemu +--- + +## Quickly launch a qemu vm with local qcow as hard drive + +In this example I am using the docker0 bridge because I do not want to have to modify my shorewall config, but any proper bridge would do : +{{< highlight sh >}} +ip tuntap add tap0 mode tap +brctl addif docker0 tap0 +qemu-img create -f qcow2 obsd.qcow2 10G +qemu-system-x86_64 -curses -drive file=install65.fs,format=raw -drive file=obsd.qcow2 -net nic,model=virtio,macaddr=00:00:00:00:00:01 -net tap,ifname=tap0 +qemu-system-x86_64 -curses -drive file=obsd.qcow2 -net nic,model=virtio,macaddr=00:00:00:00:00:01 -net tap,ifname=tap0 +{{< /highlight >}} + +The first qemu command runs the installer, the second one just runs the vm. + +## Launch a qemu vm with your local hard drive + +My use case for this is to install openbsd on a server from a hosting provider that doesn't provide an openbsd installer : +{{< highlight sh >}} +qemu-system-x86_64 -curses -drive file=miniroot65.fs -drive file=/dev/sda -net nic -net user +{{< /highlight >}} + +## Ressources + +- https://github.com/dodoritfort/OpenBSD/wiki/Installer-OpenBSD-sur-votre-serveur-Kimsufi diff --git a/content/en/blog/commands/rrdtool.md b/content/en/blog/commands/rrdtool.md new file mode 100644 index 0000000..33f54dc --- /dev/null +++ b/content/en/blog/commands/rrdtool.md @@ -0,0 +1,21 @@ +--- +title: "rrdtool" +linkTitle: "rrdtool" +date: 2018-09-25 +description: > + rrdtool +--- + +## Graph manually + +{{< highlight sh >}} +for i in `ls`; do + rrdtool graph $i.png -w 1024 -h 768 -a PNG --slope-mode --font DEFAULT:7: \ + --start -3days --end now DEF:in=$i:netin:MAX DEF:out=$i:netout:MAX \ + LINE1:in#0000FF:"in" LINE1:out#00FF00:"out" +done +{{< /highlight >}} + +## References + +- https://calomel.org/rrdtool.html |