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Bourne shell scripting help?

Bourne shell scripting help?

mattpd	30 Oct, 2009 - 10:57 AM Post #1
New D.I.C Head Joined: 15 Mar, 2008 Posts: 21	I have a text file, and I need to write a script to search the text file for the users input. If the input already exists, print error. Otherwise add input to the text file. My question is, can you set a 'flag' when you use grep to search the file for the input? I know how to do the rest... So if grep finds something, error, else add to txt file.
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brds	RE: Bourne Shell Scripting Help? 30 Oct, 2009 - 04:48 PM Post #2
D.I.C Regular Joined: 22 Oct, 2008 Posts: 442 Thanked: 36 times My Contributions	You mean like capture the out of grep? CODE $myvar=`grep "expr" file`
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baavgai	RE: Bourne Shell Scripting Help? 30 Oct, 2009 - 05:05 PM Post #3
Dreaming Coder Joined: 16 Oct, 2007 Posts: 4,348 Thanked: 411 times Dream Kudos: 550 Expert In: C, C++, Java, C#, ASP.NET, PHP, Perl, Python, Oracle, SQL Server, MySql, HTML, JavaScript, Lua, Cheese My Contributions	Your grep should have a '-c' flag. This gets you a count of matches. So a zero means no matches. You should be able to take if from there.
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