In the screen, copying the history of the window output is quite hard. How to save the screen easily to a file?
First type Ctrl + A then : to get to command mode.
In the command mode, execute
hardcopy -h /path/to/file
screen will save the window output to /path/to/file.
Programs may want to catch the kill signals sent by the kill command in C programs on Linux so that it can gracefully shutdown itself before it is killed. For example, I have a daemon progd running, and it may be killed by pkill progd. The progd may want to save some in-memory state to…
Any suggestions on good tutorials for screen on Linux? To start with screen: A quick tutorial on screen. After can use the basic functions of screen, you may check out A dummies introduction to GNU Screen and A guide to GNU Screen. During all the progresses, frequently check the screen man page. Read more: How…
Any good tutorial on how to install and configure a MySQL cluster on CentOS/RHEL 6.3? Check these posts: Installing MySQL Cluster on CentOS 6.3Configuring the MySQL Cluster General tutorials: MySQL Cluster Installation and CentOS 6: Install MySQL Cluster – The Simple Way. Read more: How to configure ifcfg-eth0 network scripts on Fedora/RHEL Linux? How To…
For example, try to less the error messages generated by the compiler with make | less Use this command: make 2>&1 | less or, if you want stderr only: make 2>&1 >/dev/null | less Read more: How to judge whether its STDERR is redirected to a file in a Bash script on Linux? How to…
What is the implementation of strstr in glibc? Implementation of STRSTR in glibc (string/strstr.c): /* Return the first occurrence of NEEDLE in HAYSTACK. Return HAYSTACK if NEEDLE is empty, otherwise NULL if NEEDLE is not found in HAYSTACK. */ char * STRSTR (const char *haystack_start, const char *needle_start) { const char *haystack = haystack_start; const…
In C, how to print a string as a line to STDOUT? That is, the string and the newline character, nicely? And similarly, how to print the line to STDERR? In C, to print to STDOUT, you may do this: printf(“%sn”, your_str); For example, $ cat t.c #include <stdio.h> void main() { printf(“%sn”, “hello world!”);…