Commands using sed

Also removes translator comments. You can remove the header by omitting --keep-header, but if your msgids contain non-ASCII characters you will need the header to specify a suitable charset.

This functionality seems to be missing from commands like dpkg. Ideally, I want to duplicate the behavior of rpm --verify, but it seems difficult to do this in one relatively short command pipeline.

Reference:

http://stackoverflow.com/a/4455706

Find all the occurrences in the git repo of 'foo' and replace with 'bar'

# find assumes email files start with a number 1-9

# sed joins the lines starting with " " to the previous line

# gawk print the received and from lines

# sort according to the second field (received+from)

# uniq print the duplicated filename

# a message is viewed as duplicate if it is received at the same time as another message, and from the same person.

The command was intended to be run under cron. If run in a terminal, mutt can be used:

mutt -e "push otD~=xq" -f $folder

It is often recommended to enclose capital letters in a BibTeX file in braces, so the letters will not be transformed to lower case, when imported from LaTeX. This is an attempt to apply this rule to a BibTeX database file.

DO NOT USE sed '...' input.bib > input.bib as it will empty the file!

How it works:

Apply the search-and-replace rule to lines that start (^) with zero or more white spaces (\s*), followed by any character ([...]) that is *NOT* a "@" or a "%" (^@%).

Search (s) for some stuff and replace by other stuff. Do that globally (g) for all matches in each processed line.

Matches at least one uppercase letter ([A-Z][A-Z]*) followed by a character that is EITHER not "}" and not a capital letter ([^}A-Z]) OR (|) it actually IS a "}", which is followed by "," at the end of the line ($).

Putting regular expressions in escaped parentheses (\( and \), respectively) allows to dereference the matched string later.

Replace the matched string by "{", followed by part 1 of the matched string (\1), followed by "}", followed by the second part of the matched string (\2).

I tried this with GNU sed, only, version 4.2.1.

This was tested on Ubuntu 12.04 (Precise) LTS Server. It returns the name of the symlink within /dev/disk/by-id for the physical drive you specify. Change /dev/sda to the one you want, and replace ata- with scsi- or the appropriate type for your drive.

I used this to pre-configure grub-pc during a non-interactive install because I had to tell it which disk to install grub on, and physical disks don't have a UUID such as that blkid provides.

Use optimized sed to big file/stream to reduce execution time

Use

insted of sed

Quietly get a webpage from wikipedia: curl -s

By default, don't output anything: sed -n

Search for interesting lines: /<tr valign="top">/

With the matching lines: {}

Search and replace any html tags: s/<[^>]*>//g

Finally print the result: p

This command downloads the actual 20 most popular pictures from the website 500px. It uses a random name due to the fact the the pictures in 500px are stored with the same name.

UPDATED: doesn't work if no referrer is specified: --referer='http://500px.com/'

http://www.ivorde.ro/How_to_remove_first_last_character_from_a_string_using_SED-75.html

Take a screenshot, give $1 seconds pause to choose what to screenshot, then upload and get URI of post in ompdlr.org

Create a .png from output command or whatever, the upload and give URI from ompdlr.org

Catches some background colors missed by the highest rated alternative.