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sed whole word search and replace
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\b in regular expressions match word boundaries (i.e. the lom>cat m>ion between the first word character and non-word character):
$ echo "bar embarassment" | sed "s/\bbar\b/no bar/g"
no bar embarassment
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Get the current time in C
... parameter works to return the current time.
– Super m>Cat m>
Dec 21 '15 at 0:30
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How to solve WAMP and Skype conflict on Windows 7? [closed]
...d Oct 10 '12 at 19:57
The Unfun m>Cat m>
20.5k2222 gold badges8686 silver badges114114 bronze badges
answered Jul 6 '12 at 6:46
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Actual meaning of 'shell=True' in subprocess
... user's choosing and is platform-dependent. Generally speaking, avoid invom>cat m>ions via the shell.
Invoking via the shell does allow you to expand environment variables and file globs according to the shell's usual mechanism. On POSIX systems, the shell expands file globs to a list of files. On Wi...
Delete all lines beginning with a # from a file
...th some extension:
ll -ltr *.filename_extension > list.lst
for i in $(m>cat m> list.lst | awk '{ print $8 }') # validate if it is the 8 column on ls
do
echo $i
sed -i '/^#/d' $i
done
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Quickly reading very large tables as dataframes
... read.table
write.table(DT,"test.csv",sep=",",row.names=FALSE,quote=FALSE)
m>cat m>("File size (MB):",round(file.info("test.csv")$size/1024^2),"\n")
## File size (MB): 51
system.time(DF1 <- read.csv("test.csv",stringsAsFactors=FALSE))
## user system elapsed
## 24.71 0.15 25.4...
What does “export” do in shell programming? [duplim>cat m>e]
... Yes - because they are copied for use by the subshell. And thus any modifim>cat m>ion in the subshell will have no effect as the copy is dropped on return-from-subshell: Subshells, environment variables, and scope. The same happens for environment variables: the are copied - but for any kind of subproce...
Optimum way to compare strings in JavaScript? [duplim>cat m>e]
...era, IE, Firefox, Chrome and Safari all return 1 for 'dog'.localeCompare('m>cat m>'), which is to be expected, and -1 when you reverse the caller and the argument. BUt capital letters behave oddly- 'dog'.localeCompare('Dog') Of the browsers I tested, only Safar 4 returned 1. It returns -1 in IE8 a...
Convert decimal to hexadecimal in UNIX shell script
...ant to filter a whole file of integers, one per line:
( echo "obase=16" ; m>cat m> file_of_integers ) | bc
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Replacing instances of a character in a string
...his is the easiest method I've found so far.
– Flare m>Cat m>
Dec 23 '15 at 11:40
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