Little used, but useful command line apps
"I pressed TAB twice and picked some commands from the list that I never use and made a howto out of it"
Please note that I am running !OpenZaurus 3.2 and I have added alot of programs so you might not have some of these.
free shows you how much free memory you have.
shows you who is logged on at the moment.
print effective userid (shows you who your loged on as)
Send files to and receive files from win95
Get wireless statistics from specific nodes. Iwspy is used to set a list of addresses in a wireless network interface
and to read back quality of link information for each of those. This information
is the same as the one available in /proc/net/wireless : quality of the link, signal strength and noise level.
df tells you how much free storage space you have left.
output the first part of files head prints the first part (10 lines by default) of each given file; it reads from standard input if no files are given or when a filename of `-' is encountered. If more than one file is given, it prints a header consisting of the file's name enclosed in `==>' and `<==' before the output for each file.
output the last part of files tail is just like head, it just prints out the last 10 lines of the file.
The sed utility reads the specified files, or the standard input if no files are specified, modifying the input as specified by a list of commands. The input is then written to the standard output.
vlock is a program to lock one or more sessions on the Linux console. This is especially useful for Linux machines which have multiple users with access to the console. One user may lock his or her session(s) while still allowing other users to use the system on other virtual consoles. If desired, the entire console may be locked and virtual console switching disabled.
Tell how long the system has been running. uptime gives a one line display of the following information. The current time, how long the system has been running, how many users are currently logged on, and the system load averages for the past 1, 5, and 15 minutes.
display a tree of processes. pstree shows running processes as a tree. The tree is rooted at either pid or init if pid is omitted. If a user name is specified, all process trees rooted at processes owned by that user are shown.
change file timestamps. Update the access and modification times of each FILE to the current time.
estimate file space usage. Summarize disk usage of each FILE, recursively for directories.
remove empty directories. Remove the DIRECTORY(ies), if they are empty.
Hostname is the program that is used to either set or display the current host, domain or node name of the system. These names are used by many of the networking programs to identify the machine. The domain name is also used by NIS/YP.