Sed stands for Stream EDitor - one of the basic tools in the POSIX environment. It processes one or more files according to an editing script and writes the results to standard output. Created in Bell Labs, it has been around since mid-70s.

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sed php.ini memory_limit

The following works great: phpmemory_limit=256M #or what ever you want it set to sed -i 's/memory_limit = 16M/memory_limit = '${phpmemory_limit}'/' /etc/php5/apache2/php.ini If the memory_limit is ...
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How can I echo changes made in a sed expression to the console?

I have a simple sed expression: sed -i 's/foo/bar/g' blat.xml Because the expression modifies the file in place it is hard to see which lines were changed. Is there a way to echo the modified ...
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bash script - print from line N to EOF

I want to be able to print the number of lines from bash as such: Line number (as counted from the top) -> end of the file It seems tail will only count lines from the bottom. Does anyone know how ...
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vi syntax to comment out non-commented lines (cron)

Anyone know if it's possible in vi to replace only uncommented/non-blank lines with comments? If I want to replace a commented line with something I know I can use :%s/^#/##foo##/g -- but I am ...
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How to recursively search and replace from command line on unix/linux system

So I want to change several files at one with one command. This is what I have so far: find -regex ".*\.ext$" | xargs grep -l searchText 2> /dev/null | xargs -i sed 's/searchText/replaceText/' ...
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How to get all running process ids only?

I know that ps ax returns the pids 1 ? Ss 0:01 /sbin/init 2 ? S< 0:00 [kthreadd] 3 ? S< 0:00 [migration/0] All I need is to clean those strings, but I ...
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How can I use grep to find the most frequently recurring errors in my log file?

I've got a PHP application that is generating large amounts of warnings and notices in the log file.. I'm fixing these one at a time. I would like to be able to fix the most frequently occurring ...
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SED Find & Replace w\ Regular Expressions

Alright, So i'm confused & out of ideas. I'm trying to replace all the old IP addresses with a new one. find -type f | grep \.php$ | xargs sed -r -i ...
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Getting correct linefeeds in emails generated from linux

I have a script that emails certain linux log entries to me, and I read the email in MS Outlook. The problem is that all the lines run together with no linefeeds between the lines. To address this I ...