Sed formatting

I redirected the output of ls -lh $ZSH/themes to the file themeslist
and want to extract only pure themes names list to get them prepared for insertion into my .zshrc, but formatted as per:

#3den
#abden
#af-magic
#afowler
#agnoster (and so on)

How do I do this using sed - how do I get rid of all the excessive elements? Thanks!

-rw-rw-r-- 1 tlil tlil 330 Mar 24 15:10 3den.zsh-theme
-rw-rw-r-- 1 tlil tlil 4.5K Mar 24 15:10 adben.zsh-theme
-rw-rw-r-- 1 tlil tlil 986 Mar 24 15:10 af-magic.zsh-theme
-rw-rw-r-- 1 tlil tlil 394 Mar 24 15:10 afowler.zsh-theme
-rw-rw-r-- 1 tlil tlil 7.2K Mar 24 15:10 agnoster.zsh-theme
-rw-rw-r-- 1 tlil tlil 1.1K Mar 24 15:10 alanpeabody.zsh-theme
-rw-rw-r-- 1 tlil tlil 748 Mar 24 15:10 amuse.zsh-theme
-rw-rw-r-- 1 tlil tlil 822 Mar 24 15:10 apple.zsh-theme
-rw-rw-r-- 1 tlil tlil 506 Mar 24 15:10 arrow.zsh-theme
-rw-rw-r-- 1 tlil tlil 325 Mar 24 15:10 aussiegeek.zsh-theme
-rw-rw-r-- 1 tlil tlil 3.4K Mar 24 15:10 avit.zsh-theme
-rw-rw-r-- 1 tlil tlil 750 Mar 24 15:10 awesomepanda.zsh-theme
-rw-rw-r-- 1 tlil tlil 980 Mar 24 15:10 bira.zsh-theme
-rw-rw-r-- 1 tlil tlil 979 Mar 24 15:10 blinks.zsh-theme
-rw-rw-r-- 1 tlil tlil 3.3K Mar 24 15:10 bureau.zsh-theme
-rw-rw-r-- 1 tlil tlil 1.2K Mar 24 15:10 candy-kingdom.zsh-theme
-rw-rw-r-- 1 tlil tlil 365 Mar 24 15:10 candy.zsh-theme
-rw-rw-r-- 1 tlil tlil 1.3K Mar 24 15:10 clean.zsh-theme
-rw-rw-r-- 1 tlil tlil 476 Mar 24 15:10 cloud.zsh-theme
-rw-rw-r-- 1 tlil tlil 372 Mar 24 15:10 crcandy.zsh-theme
-rw-rw-r-- 1 tlil tlil 1.9K Mar 24 15:10 crunch.zsh-theme
-rw-rw-r-- 1 tlil tlil 262 Mar 24 15:10 cypher.zsh-theme

 cat awk-themes | awk '{print "#"$9}' | sed 's|\.[a-z].*||'
#3den
#adben
#af-magic
#afowler
#agnoster
#alanpeabody
#amuse

'awk-themes' That is what I named the file, if you want to put that output into another file just redirect it into it.

I'd have started with

ls -1 $ZSH/themes

(that's a one, not an ell) which would have put

3den.zsh-theme
adben.zsh-theme
af-magic.zsh-theme
afowler.zsh-theme
agnoster.zsh-theme
...

in your output file, then

sed -e 's/^/#/' -e 's/.zsh-theme//' themeslist

Or, all at once:

ls -1 $ZSH/themes | sed -e 's/^/#/' -e 's/.zsh-theme//' > themeslist

where themeslist is list as requested for insertion.

Thank you! Isn't this marvelous? Sed and awk the real power things!

Just for fun, a bash one-liner

for f in *.zsh-theme; do [[ "$f" =~ ([[:alnum:]]+).zsh-theme ]] && echo "#${BASH_REMATCH[1]}"; done

Lads, could you please point me to some good materials where I could learn those things in-depth? I mean, sed, awk, (ba)sh power tricks... Thanks a million!

I recommend these:

Wooledge's Bash Guide
Wooledge's Bash Pitfalls
Wooledge's Bash Frequently Asked Questions
The Bash Hackers' Wiki

Bruce Barnett' AWK Grymoire

Bruce Barnett' sed Grymoire
sed One-Liners Explained

It's a matter of figuring out what each tool is best at and where to look up the details.

it'd be simple for no space name;

ls -lh $ZSH/themes |sed -E 's/^.*\s(\S+)-theme$/\1/i'