Commands by slashbang (2)

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Display last exit status of a command
The variable ? contain the last exit status of a command, it can be printed for troubleshooting purpose.

Find 'foo' string inside files

Prepend section dates to individual entries in a summary log file
Searches for dates on lines by themselves. Uses that date to prepend all rows that contain SEARCHSTRING with the date, until it reaches another line with a date by itself. This fixed an issue with a specific log export where there would be a date, followed by all of the entries for that date.

Find the package that installed a command

Create a file and manipulate the date

Look for English words in /dev/urandom
Little faster alternative.

Sort files in multiple directories by date
This sorts files in multiple directories by their modification date. Note that sorting is done at the end using "sort", instead of using the "-ltr" options to "ls". This ensures correct results when sorting a large number of files, in which case "find" will call "ls" multiple times.

rsync over ssh via non-default ssh port
tested on cygwin and Fedora 9 . good to remember for those jobs where you cannot set a site-specific connect option in your ~/.ssh/config file.

Live filter a log file using grep and show x# of lines above and below

Adding specific CustomLog for each Virtual Domain of Apache

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