Commands using ls (517)

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Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Remove comments in XML file
In Redhat, xmlstarlet is called just xml which can be found in xmlstarlet RPM.

Increment the filename of png in a given directory by one

a simple bash one-liner to create php file and call php function

Compare an archive with filesystem
and you quickly know the files you changed

Remove comments and empty lines from a conf file
Some conf file are very long (squid.conf) This command help to read it.

Delete all non-printing characters from a file
tr has some predefined sets of characters that are more convenient to use than characters codes

add static arp entry to default gateway, arp poison protection

revert a committed change in SVN
This command can be used to revert a particular changeset in the local copy. I find this useful because I frequently import files into the wrong directory. After the import it says "Committed revision 123" or similar. to revert this change in the working copy do: svn merge -c -123 . (don't forget the .) and then commit.

View an info page on a nice interface
Nice interface for an info page.


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