[Bash] - sed

mrq · 08-24-2009, 05:37 AM

Hi, it's my first post in this forum.I just started bash programming to automate some things on my server. I've done about half of the job but I'm stuck with two issues because i'm not experienced.

1. I want to use sed to read a file and run the commands in that file.Basically I want to compile php but because configure param take multiple lines i put them in a separate file. Now from a script, lest's call it web.sh i want to read all param of php, from php_conf.txt, and run it. How do i do that ?

2. I want to read all lines from a separate file and append to an existing file, at the end, and then save it. For example I have the file bash_conf.txt and want all the lines from it to be appended, at the end, to file bash.txt and then save the file. How do i do that ?

Thank you

Wim Sturkenboom · 08-24-2009, 05:51 AM

1)
check the -f option for sed

2)
check cat and >> (redirection)

pixellany · 08-24-2009, 05:51 AM

<<EDit: Wim is faster than I am-----and also much more succinct!>>

Is this homework?

Quote:

I want to use sed to read a file and run the commands in that file

SED can run it's own syntax from a file---is that what you mean? (See this for the -f option to SED: http://www.grymoire.com/Unix/Sed.html#uh-16 More generally, that site is the best SED tutorial)

Quote:

Basically I want to compile php but because configure param take multiple lines i put them in a separate file. Now from a script, lest's call it web.sh i want to read all param of php, from php_conf.txt, and run it. How do i do that ?

Is this related to the SED question? Regardless, you do not "compile PHP". PHP is a server-side scripting language.

Quote:

I want to read all lines from a separate file and append to an existing file, at the end, and then save it.

Take a look at the "cat" command and also at the redirection operators ">" and ">>".

If you don't have it already, go to http://tldp.org and get the Bash Guide for Beginners.

Good luck and Welcome to LQ!!

mrq · 08-24-2009, 06:27 AM

Quote:

Originally Posted by pixellany

<<EDit: Wim is faster than I am-----and also much more succinct!>>

Is this homework?

SED can run it's own syntax from a file---is that what you mean? (See this for the -f option to SED: http://www.grymoire.com/Unix/Sed.html#uh-16 More generally, that site is the best SED tutorial)

Is this related to the SED question? Regardless, you do not "compile PHP". PHP is a server-side scripting language.

Take a look at the "cat" command and also at the redirection operators ">" and ">>".

If you don't have it already, go to http://tldp.org and get the Bash Guide for Beginners.

Good luck and Welcome to LQ!!

What ? What do you mean "you don't compile php" ? If i'm wrong here maybe php.net is wrong also and half of the internet. Perhaps "install php from sources" is more apropriate but "compile php from sources" is definately not wrong.
Even if is my first post here I'm not a noob and this is not my homework.I'm not very experienced with linux, I'm a noob in bash, but please don't treat me with superiority, trust me is not the case. No offense, maybe I misunderstood but I'm having the impression that you're ironic.

Sturkenboom thank you.
pixellany also thank you for the links

pixellany · 08-24-2009, 06:43 AM

Nobody is "treating you with superiority".

I mis-read "compile PHP" to mean "compile PHP code"----Sorry. I don't know why you need to install PHP from source, but you obviously know more about PHP than I do.

Quote:

I'm having the impression that you're ironic.

What does this mean? "Ironic" is not normally used as an attribute for a person.