spiralbound.net

• Data and Technology

  Posted on January 17th, 2006

  Written by cliff

  Related Posts

  • RHEL useradd Syntax
  • Bash For loop Example
  • Using Sort to List Directories by Size

  Tags

  foreach, grep, ls, shell, syntax, tcsh

  I always forget the foreach syntax. Here is a quick example that reads all the contents of a directory into an array, prints out the name of each file, runs a simple grep on it, and ends.

  foreach i ( ` /bin/ls * ` )
  foreach? echo $i
  foreach?/bin/grep your_grep_string $i
  foreach? end

  This entry was posted on Tuesday, January 17th, 2006 at 10:51 am and is filed under Data and Technology. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

• 6 Comments

  Take a look at some of the responses we have had to this article.

• 1. spiralbound.net » Using Sort to List Directories by Size

     Nov 27th
     Reply

     [...] If you have nested directories, you will need to incorporate foreach to recurse through and get all the directory names. [...]
  2. 

     Anuj Arora

     Jun 8th
     Reply

     gr8 link, help a lot, thanks….
  3. spiralbound.net » Bash For loop Example

     Jul 23rd
     Reply

     [...] forgetting the syntax to make “for” loops in Bash. I guess it serves me right for using foreach most of my UNIX life instead. Anyhow, I know I will have to come back here to find it, so I thought [...]
  4. 

     Dennis

     Nov 12th
     Reply

     Thanks a lot, men!
  5. 

     naga

     Sep 8th
     Reply

     How I can write loop without nubmers but with some strings like ‘a’, ‘b’, ‘c’?
  6. 

     Brian

     Mar 3rd
     Reply

     Thanks for the info! Very simple. Helps a lot

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