Creates a customized search command

alias cr='find . 2>/dev/null -regex '\''.*\.\(c\|cpp\|pc\|h\|hpp\|cc\)$'\'' | xargs grep --color=always -ni -C2'
Creates a command alias ('cr' in the above example) that searches the contents of files matching a set of file extensions (C & C++ source-code in the above example) recursively within the current directory. Search configured to be in colour, ignore-case, show line numbers and show 4 lines of context. Put in shell initialisation file of your choice. Trivially easy to use, e.g: cr sha1_init
Sample Output
./openssl/signatures.c-600-xmlSecOpenSSLDsaSha1EvpInit(EVP_MD_CTX *ctx)
./openssl/signatures.c-601-{
./openssl/signatures.c:602:    return SHA1_Init(ctx->md_data);
./openssl/signatures.c-603-}
./openssl/signatures.c-604-
--
./openssl/signatures.c-706-    NULL,
./openssl/signatures.c-707-#else /* XMLSEC_OPENSSL_096 */
./openssl/signatures.c:708:    SHA1_Init,
./openssl/signatures.c-709-    SHA1_Update,
./openssl/signatures.c-710-    SHA1_Final,

0
By: chrisdrew
2009-01-26 08:54:25

What Others Think

I appreciate the use of the --color switch to grep.
root · 701 weeks ago
May want to use the -s switch to grep, or fix it so it handles paths with spaces. i.e.: alias cr='find . 2>/dev/null -regex '\''.*\.\(c\|cpp\|pc\|h\|hpp\|cc\)$'\'' | xargs grep --color=always -ni -C2' Someone with more talent could probably make this work with weird filenames rather than just cutting them out
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Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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