list of commands utilities [WAS: change file names]
Hello All, With the recent change file names experience, I'm wondering if there is a simply way to get a comprehensive list of A*L*L available commands utilities on a given linux OS.(Mine is Red Hat Enterprise). If so, how? If I have the list, I definitely will go through it to see if I could find any command/utility which might be helpful for solving my problem, before I post any question here. Thanks a lot! Zhao ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss
Re: list of commands utilities [WAS: change file names]
Bruce, type the tab key twice worked well on my system, thank you! I have 2 different userid on the system. One has Display all 2430 possibilities, another one has Display all 2457 possibilities. Why are they different? (Because some commands are not available for some userid?) Zhao Bruce Dawson wrote: Just list all the files in the directories in the PATH variable - that's where Unix finds all its commands. You can do this with the following command: for dir in `echo $PATH | sed -e 's/:/ /g' ` ; do ls $dir ; done Note the two different quotes are used ` is the back-tick - usually on the same key as the ~ charater. And the ' - is the single quote. Another method, if you're using the 'bash' shell, is to just type the tab key twice. Note that it'll print more than 1 thousand commands on the typical Linux system. - --Bruce ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss
Re: list of commands utilities [WAS: change file names]
Zhao Peng writes: With the recent change file names experience, I'm wondering if there is a simply way to get a comprehensive list of A*L*L available commands utilities on a given linux OS.(Mine is Red Hat Enterprise). If so, how? Assuming you're using bash, press tab -- twice. If I have the list, I definitely will go through it to see if I could find any command/utility which might be helpful for solving my problem, before I post any question here. My previous answer was unhelpful, but you're asking a difficult question. Might I suggest instead that you read the associated documentation for these things?: bash, tr, sed, awk, test, perl, cut, sort, uniq, mv, cp, find, grep, ssh, scp, tar, gzip, bzip2, fortune I'm sure that I missed quite a few things here, but this prunes the list down by quite a bit. Still, if you want to be familiar with command line tools, these are a good place to start. You can't go wrong by fully grokking what these things do. Kind regards, --kevin -- GnuPG ID: B280F24E And the madness of the crowd alumni.unh.edu!kdc Is an epileptic fit -- Tom Waits ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss
Re: list of commands utilities [WAS: change file names]
On 2/22/06, Zhao Peng [EMAIL PROTECTED] wrote: With the recent change file names experience, I'm wondering if there is a simply way to get a comprehensive list of A*L*L available commands utilities on a given linux OS.(Mine is Red Hat Enterprise). If so, how? Well, a full install of Red Hat Enterprise Linux will have something like 4500 or so programs available in the default PATH, so you likely won't want to list them all. But, if you really insist, try hitting the [TAB] key twice at a command prompt. You'll see something like this: $ Display all 4735 possibilities? (y or n) I answered no. :) Now, there are a few things that might prove useful to you. COMMANDS The man command should give you information (the man page) on a command. For example, man man will tell you how to use the man command. Not all programs have man pages, unfortunately. These man pages are also typically intended to be a reference for when you already know what you are looking for, so are typically less useful to the novice user. The man pages are divided into number sections. The section number is often given after the entry name, like this: man(1) The sections are: 1 - user commands 2 - system calls 3 - library functions 4 - device drivers 5 - files and file formats 6 - games 7 - miscellaneous 8 - system commands Some names exist in multiple sections. If you need to tell the man command which section you want it to look in, you give the section number first, like this: man 2 intro The above will give you the introduction to section 2. Every section is supposed to have an entry called intro, so if you forget what the section numbers are, man # intro will tell you. If you don't even know what command you are looking for, then try the -k switch to the man(1) command (also known as apropos). For example: man -k search will find commands about searching. The -k (lowercase) just searches the first line of each man page. To each the *contents* of each man page, use the -K (uppercase) switch: man -K search Be warned that a full search can take *a very long time*, and also may match *many* results. If you want to know what a command does, try use the whatis(1) command: $ whatis man man (1) - format and display the on-line manual pages WEB RESOURCES Don't forget about Google. For example, this query: http://www.google.com/search?q=linux+rename+files would have answered your previous question for you. :-) The Linux Documentation Project (LDP, on the web at http://www.tldp.org/) has a wealth of information. There are HOWTOs, which provide step-by-step instructions on how to accomplish something. Then there are the more general Guides, which serve as tutorials, for general education. The following guides will likely be very useful to you: Introduction to Linux - A Hands on Guide http://www.tldp.org/LDP/intro-linux/html/index.html an overview of the Linux Operating System, geared toward new users Linux Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html An alphabetical glossary of commands, programs, and concepts. Bash Guide for Beginners http://www.tldp.org/LDP/Bash-Beginners-Guide/html/index.html Advanced Bash-Scripting Guide http://www.tldp.org/LDP/abs/html/index.html Hope this helps! -- Ben ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss
Re: list of commands utilities [WAS: change file names]
On 2/22/06, Zhao Peng [EMAIL PROTECTED] wrote: type the tab key twice worked well on my system, thank you! I have 2 different userid on the system. One has Display all 2430 possibilities, another one has Display all 2457 possibilities. Why are they different? Most likely, the different users have a different PATH environment variable. The PATH tells the shell (bash) where to look. As each user, try this command: echo $PATH That will show you the PATH. -- Ben ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss
Re: list of commands utilities [WAS: change file names]
different users have a different PATH Many factors come into play when trying to answer this (somewhat inexact) question. For example, the program files (and components of the directory paths by which they're reached) may be such that they're accessible/ executable by one user but not another, so even if those users do have the same definitions for their $PATH, the set of commands available to each user can be different. ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss
