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This is article about how to do some script programing on linux Wink



1. any text editor like vi , pico etc ...

2. after writing shell script set execute promission for your script like follows

examples:

# if you srcipt is called hello than

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$ chmod +x hello
$ chmod 755 hello


|||
|||
||----- this (5) will set read , execute for other
||
||-------- this (5) will set read , execute for group
|
|------------- this (7) will set read , write , execute promissions for owner


3. to execute your shell script use

examples:
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$ bash
$ sh
$ ./hello


now lets write some easy script Smiley

type this in your editor

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# clears the screen
# echos I made script on screen
clear
echo "hi to all"


save this as hello

now set promissions like
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chmod +x hello
chmod 755 hello


and now run script

do this
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./hello


new script

Write following shell script, save it, execute it and note down the it's output.
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clear
echo "Hello $USER" # say hello to active user
echo "Today is \c ";date # print's date
echo "Number of user login : \c" ; who | wc -l # number of logins
echo "Calendar" # calendar
cal
exit 0


This is simple howto for shell scripts

If there are errors or something correct me

I belive it will be usefull to other members

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$ bash
$ sh
$ ./hello

You dont need to bash and then sh cause all you're doing is running a shell within a shell within a shell. If you want your shell scripts to run through a certain app/program use something like:

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#!/usr/bin/perl

You see that alot at the beginning of perl scripts or:

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#!/usr/bin/sh
#!/usr/bin/awk

You can also pass flags/command line arguments like to run a perl script through perl with warnings on you'd do

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#!/usr/bin/perl -w

Also if you want to see more enviroment varibles like the

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echo "Hello $USER" # say hello to active user

used in your example type:

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env

theres alot more to shell scripting, if you're really curious read the bash manpage regarding loops and etc.

~c

Hey,
what commands should I use to send a mail with attachment?
thanks

kotuk wrote:Hey,
what commands should I use to send a mail with attachment?
thanks

should be it's own topic really kotuk, but what your looking for is:

uuencode $file |mail -s "mail subject" [email protected]

try usig "pine" to send and manage emails from a shell.. it has its own "gui" to get rid of commandline switches \o/

Post Stickied.

Thanks. This is probably the most intricate and useful how-to I've ever read on these boards.

Well done.

Thank you, I've been looking for a easy tutorial for a while now.

but to me this is not so easy :

ravenhair wrote:

kotuk wrote:Hey,
what commands should I use to send a mail with attachment?
thanks

should be it's own topic really kotuk, but what your looking for is:

uuencode $file |mail -s "mail subject" [email protected]

Just a small modification it is rather that :

uuencode $file $file |mail -s "mail subject" [email protected]

Note : uuencode is provided by sharutils package (if you don't want to compile it)

dlx wrote:try usig "pine" to send and manage emails from a shell.. it has its own "gui" to get rid of commandline switches \o/

You can do more with pine but, personnaly I prefer mutt (just enough efficient for me, especially for local mailboxes).

useful thinks ......

i got something new 2day

you have out togather alot of good information here

Very interesting information guys, well done .

I have yet to become a pro a shell scripting, but takes time and patience.

Note: I know this been here for awhile, but never saw it before lol

Some good info here, im going to sit and have a play when i have a bit of spare time