01-16-2017
Hey again guys!
Thanks so much for your time and precisions!
Great material right there (especially for a beginner!).
@Bakunin: Your comments were heard! Hahahaha! Next version of the script I'll post will, hopefully, be well organized (if not correct me!
).
@MadeinGermany: The difference between the 2 is clear! Thanks a lot for that.
I'd like to come back to an earlier comment from Bakunin though:
Quote:
As a rule of thumb: grep/sed/awk | grep/sed/awk is always wrong because it can be done in the respective tool chosen.
I've been working on grep exclusively lately to try to find the correct syntax to extract the info right away but I can't seem to find a way (other than using a SED) to extract a specific portion of a line
.
Take as an example, your correction of the link extraction:
Quote:
You can do all in sed without an additional egrep:
Code:
link=$( curl "your-link-here" |\ sed -n '/href.*view more/ s/.*href="\([^"]*\).*/\1/p' \ )
Could you have done that with a grep instead of a sed? I'm trying to determine the limitation of each of these 3 commands
(don't worry, you don't have to explain that to me here, I'll figure it out on my own!
).
Thanks as usual!
Best!
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PYP(1) General Commands Manual PYP(1)
NAME
pyp - The Pyed Piper: A Modern Python Alternative to awk, sed and Other Unix Text Manipulation Utilities
SYNOPSIS
pyp [options] files ...
DESCRIPTION
pyp, the Pyed Piper, is a command line tool for text manipulation. It is similar to awk and sed in functionality, but its subcommands are
Python based, and thus more familiar to many programmers.
It can operate both on a per-line base and on the complete input stream. Different features can be pipelined in a single command by using
the pipe character familiar from shell commands.
pyp backs up its input for reruns with modified commands, and can save commands as macros. On the downside, the rerun feature makes it
unsuitable for continuous pipe operation.
OPTIONS
These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is
included below. For a complete description, use --manual.
-h, --help
Show this help message and exit.
-m, --manual
Prints out extended help.
-l, --macro_list
Lists all available macros.
-s MACRO_SAVE_NAME, --macro_save=MACRO_SAVE_NAME
Saves current command as macro. use "#" for adding
comments EXAMPLE:
pyp -s "great_macro # prints first letter" "p[1]".
-f MACRO_FIND_NAME, --macro_find=MACRO_FIND_NAME
Searches for macros with keyword or user name.
-d MACRO_DELETE_NAME, --macro_delete=MACRO_DELETE_NAME
Deletes specified public macro.
-g, --macro_group
Specify group macros for save and delete; default is user.
-t TEXT_FILE, --text_file=TEXT_FILE
Specify text file to load. For advanced users,
you should typically cat a file into pyp.
-x, --execute
Execute all commands.
-c, --turn_off_color
Prints raw, uncolored output.
-u, --unmodified_config
Prints out generic PypCustom.py config file.
-b BLANK_INPUTS, --blank_inputs=BLANK_INPUTS
Generate this number of blank input lines; useful for
generating numbered lists with variable 'n'.
-n, --no_input
Use with command that generates output with no input;
same as --dummy_input 1.
-k, --keep_false
Print blank lines for lines that test as False.
default is to filter out False lines from the output.
-r, --rerun
Rerun based on automatically cached data from the last run.
Use this after executing "pyp", pasting input into the shell,
and hitting CTRL-D.
SEE ALSO
awk(1), grep(1), sed(1).
AUTHOR
pyp was written by Toby Rosen <tobyrosen@gmail.com>.
This manual page was written by Khalid El Fathi <khalid@elfathi.fr>, for the Debian project (and may be used by others).
March 19, 2012 PYP(1)