How to merge multiple jpg images to a pdf on Linux?
I have multiple jpg images as files like 001.jpg, 002.jpg …
How to merge multiple jpg images to a pdf on Linux?
convert is your good friend:
convert *.jpg output.pdf
I have multiple jpg images as files like 001.jpg, 002.jpg …
How to merge multiple jpg images to a pdf on Linux?
convert is your good friend:
convert *.jpg output.pdf
How to download a rtmp video stream on Linux? You can use mplayer to dump the rtmp stream like: mplayer -dumpstream rtmp://example.com/path/to/stream.mp4 It will generate ./stream.dump and you can rename it to the file with the extension you need like stream.mp4. The rtmp link usually can be found from the HTML or JavaScript source code…
iptables is a mechanism in Linux kernel for port forwarding, NAT, firewalls etc. In Linux distros, such as Fedora, the iptables is configured to be as a “strict” firewall that opens a limited know ports, such as 22 for SSH. However, in some network environment, such as a private cluster, the nodes are trusted and…
Abstract Sometimes, we may want to migrate one process/thread to one specific CPU for some specific purpose. In the Unix/Linux systems, you may choose sched_setaffinity to finish this job. This article will help you to understand how sched_setaffinity (or other APIs like pthread_setaffinity_np in user-space) works internal Linux kernel. Details SYSCALL_DEFINE3(sched_setaffinity, pid_t, pid, unsigned int,…
LVM is a great tool to manage hard disks on Linux—you can abstract the hard drives away and manage logical volumes from volume groups, you can dynamically add or remove hard drives while the file systems on the logical volumes need not to backed up and recovered, and you may create many snapshots of the…
Linux port forwarding is simple to do with iptables which may probably already being used as the firewall or part of the setting up a Linux gateway. In the Linux kernel, port forwarding is achieved by packet filter rules in iptables. Port forwarding Port forwarding also called “port mapping” commonly refers to the network address…
The Linux disk names (e.g. sda1, hdb3, etc.) are not reliable—they may be changed if there are hardware changes, such an adding or removing a disk. Additionally, the order for the Linux device names is not always the same as the order of SATA poets. For example, the disk connected to SATA port 0 (first…
Note that convert will read the uncompressed input files into memory before converting to pdf, so if you have a lot of files, you might run out of memory.
An alternative approach is first convert each file to pdf, and then combine the pdfs into one.