Differences between version 7 and predecessor to the previous major change of RegularExpression.
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| Newer page: | version 7 | Last edited on Friday, May 16, 2003 11:13:03 am | by FelipeAlmeida | Revert |
| Older page: | version 5 | Last edited on Friday, March 14, 2003 12:04:34 pm | by JohnMcPherson | Revert |
@@ -19,8 +19,14 @@
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sed(1) is a "__s__cript __ed__itor" which uses regex's. sed is usually used for it's amazing search and replace capability. for (simple) example:
sed 's/foo/baz/g' <a.txt >b.txt
will search for "foo" and replace it with "baz" in a.txt and output the result in b.txt
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+using perl(1) insted of sed(1) for inplace substitution:
+ perl -pi -e 's/foo/bar/g' filename
+will search for "foo" and replace it with "bar" in filename and output the result in filename itself
+
+See also: perlrun(1)
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awk(1) is a tool for doing processing on record orientated files. It allows you to specify different actions to perform based on regex's.
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See also: File [Glob]s
