Use the shell globbing syntax:
grep pattern -r --include=\*.cpp --include=\*.h rootdir
The syntax for --exclude
is identical.
Note that the star is escaped with a backslash to prevent it from being expanded by the shell (quoting it, such as --include="*.cpp"
, would work just as well). Otherwise, if you had any files in the current working directory that matched the pattern, the command line would expand to something like grep pattern -r --include=foo.cpp --include=bar.cpp rootdir
, which would only search files named foo.cpp
and bar.cpp
, which is quite likely not what you wanted.
Update 2021-03-04
I've edited the original answer to remove the use of brace expansion, which is a feature provided by several shells such as Bash and zsh to simplify patterns like this; but note that brace expansion is not POSIX shell-compliant.
The original example was:
grep pattern -r --include=\*.{cpp,h} rootdir
to search through all .cpp
and .h
files rooted in the directory rootdir
.
With Python 2.6+ you can do:
echo '{"foo": "lorem", "bar": "ipsum"}' | python -m json.tool
or, if the JSON is in a file, you can do:
python -m json.tool my_json.json
if the JSON is from an internet source such as an API, you can use
curl http://my_url/ | python -m json.tool
For convenience in all of these cases you can make an alias:
alias prettyjson='python -m json.tool'
For even more convenience with a bit more typing to get it ready:
prettyjson_s() {
echo "$1" | python -m json.tool
}
prettyjson_f() {
python -m json.tool "$1"
}
prettyjson_w() {
curl "$1" | python -m json.tool
}
for all the above cases. You can put this in .bashrc
and it will be available every time in shell. Invoke it like prettyjson_s '{"foo": "lorem", "bar": "ipsum"}'
.
Note that as @pnd pointed out in the comments below, in Python 3.5+ the JSON object is no longer sorted by default. To sort, add the --sort-keys
flag to the end. I.e. ... | python -m json.tool --sort-keys
.
Best Answer
The dot at the end searches the current directory. Meaning for each parameter:
grep -nr 'MobileAppSer*' .
(Would findMobileAppServlet.java
orMobileAppServlet.class
orMobileAppServlet.txt
;'MobileAppASer*.*'
is another way to do the same thing.)To check more parameters use man grep command.