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#1 (permalink)

03-02-2009

figaro

Registered User

Join Date: Jan 2007

Posts: 268

Checking whether program is installed

I currently use this construction to check whether a certain program is installed:

Code:

if [ ! -e `which sqlite3` ]; then
        cd /usr/ports/databases/sqlite3 && make install clean
else 
        echo "sqlite already installed"
fi

Is this method recommended? Is this an effective method, ie sufficiently robust for other examples, such as gcc, php, perl etc? Are there any caveats to this? The snippet is run as part of a script as root.

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