gu(glielmo's) mon(itor)

crowbar MMXII

A simple Linux system monitor written in C for bar, dzen2, etc..

Configuration

All the configuration is done in the config.h file. These are the sections available so far:

• CPUs (T)
• MEMORY info
• SWAP info
• Available space on hard disks
• Disks IO (T)
• Network Interfaces IO (T)
• Time and Uptime
• Temperatures reading (T)
• Battery status and remaining percentage (T)
• Music Player Daemon info (can be removed by undefining MPD in config.h)
• ALSA mixer status and volume (can be removed by undefining ALSA in config.h)

Every section marked with (T) means that is configured in this way, let's take the CPUs section as an example:

static const char *cpus[] = {"cpu","cpu0","cpu1"}; 

static const char *cpusf[][3] = { {"| CPU : LOW%.0f | ","| CPU : NORM%.0f | ","| CPU : HIGH%.0f | "}
                                  {"CPU0: LOW%.0f | ","CPU0: NORM%.0f | ","CPU0: HIGH%.0f | "},
                                  {"CPU1: LOW%.0f | ","CPU1: NORM%.0f | ","CPU1: HIGH%.0f | "}};

static const float cpusthres[][2] = { {25.,75.},
                                      {50.,75.},
                                      {50.,80.} };

1. The first item is an array that contains the names of the cpus that will be monitored;
2. the second item is a matrix containing the formats with which the cpu's average load will be printed;
3. the third item is a matrix containg the thresholds for the different formats.

For example if the load for cpu is < 25 , for cpu0 is > 50 and < 75 and for cpu1 is > 80, the output will be

| CPU : LOW%.0f | CPU0: NORM%.0f | CPU1: HIGH%.0f |

Every other section has a format char array, used to format the output of the data, and optionally a list of the interfaces to monitor.

For example

static const char *mountpoints[] = {"/","/home"}; /*List of mountpoints to monitor*/
static const char *mountpointsf[] = {"/ %.2f GB | ","/home %.2f GB"}; /* format of the remaining size in GB */

The Print Order

At the end of the file the order with which all the data will be printed can be set, by adding elements to the porder[] array. All the possible choices are in the enum PrintOrder definition. For example, let's assume that one wants to print the Network,Cpu and Memory info in such order.

Then porder can be set as follows:

static const enum PrintOrder porder[] = {Pnetwork,Pcpus,Pmem};

The Plsep,Pcsep,Prsep items, will respectively print the strings in separators[0],separators[1],separators[2].

Defaults

The default config.h prints data formatted for the awesome bar, and uses the stlarch_font. Change it as you wish!

Usage

gumon's output can be passed to another program, such as bar or dzen2, via pipe. For example:

gumon | bar

or

gumon | dzen2