大约有 800 项符合查询结果（耗时：0.0281秒） [XML]
More elegant “ps aux | grep -v grep”
... Note that this works with GNU's ps (Linux), but not with the BSD ps.
– Josh
Feb 5 '13 at 23:06
...
How to remove trailing whitespaces with sed?
...t's on OSX (you can use gsed to avoid this problem). It may delete them on BSD too.
If you don't have gsed, here is the correct (but hard-to-read) sed syntax on OSX:
sed -i '' -E 's/[ '$'\t'']+$//' "$1"
Three single-quoted strings ultimately become concatenated into a single argument/expression....
Rename multiple files based on pattern in Unix
...
rename 's/^fgh/jkl/' fgh*
Real pretty, but rename is not present on BSD, which is the most common unix system afaik.
rename fgh jkl fgh*
ls | perl -ne 'chomp; next unless -e; $o = $_; s/fgh/jkl/; next if -e; rename $o, $_';
If you insist on using Perl, but there is no rename on your system, ...
How to check if a symlink exists
...
According to the GNU manpage, -h is identical to -L, but according to the BSD manpage, it should not be used:
-h file True if file exists and is a symbolic link. This operator is retained for compatibility with previous versions of this program. Do not rely on its existence; use -L inste...
How can I search for a multiline pattern in a file?
... experimental and grep -P may warn of unimplemented features. Of course in BSD grep it's not there at all. Would be nice if it wasn't so experimental but it's nice to be reminded of it - little though I'm likely to use it.
– Pryftan
Sep 23 '19 at 0:10
...
grep a file, but show several surrounding lines?
...
For BSD or GNU grep you can use -B num to set how many lines before the match and -A num for the number of lines after the match.
grep -B 3 -A 2 foo README.txt
If you want the same number of lines before and after you can use ...
Set up a scheduled job?
...
BSD, Mac, and any Unix-like OS have cron.
– DylanYoung
Sep 3 '16 at 16:26
add a comment
...
How to make a transparent UIWebView
... these properties in Interface Builder will work for iOS 5.0+, but for iOS 4.3 you must set the backgroundColor in code)
And include this into your HTML code:
<body style="background-color: transparent;">
share
...
Total size of the contents of all the files in a directory [closed]
...
yeah, good point. if it wasn't in bsd 4.2 I don't remember to use it :-(
– Nelson
Aug 6 '09 at 22:24
3
...
Read each line of txt file to new array element
...e. Even PHP stores the content of parsed files. I mean, we're far from PHP 4.3
– Yanick Rochon
Jul 16 at 2:32
add a comment
|
...