Usually I read a lot of bash tips, codes, snippets, but some tips are hard to find, let see 2 tips:
Read Line
The ideia is, read each line of a file using bash, some people use terrible ways to do this job.
Bash has a simple way, $(< filename)
echo $(< file.txt)
Apparently the command did’n work, but the fact’s, the command worked, but printed line by line without ‘\n’.
This for show how to work with each line.
for i in $(<file); do echo $i; done
Rename only the extension
This is simple, some tasks need a in file and a out file, the two files can be different, if we need a ‘for’ we need create a good number of files.
Instead of create something like foo.txt and foo.txt.xml, you can create one foo.xml.
Let’s use ${//} to improve your work.
$variable = name.foo
echo ${variable/foo/bar}
Inside a for, is awesome:
for i in */*.xml; do xml2xsd $i ${i/xml/xsd}; done
Thanks
