Veni, Vidi, VISA

# List all files older than 15mins

  $ ls -ldrt -- *(mm+15)

# Just regular files

  $ ls -ldrt -- *(.mm+15)

# the age of the pointed to file for symlinks

  $ ls -Lldrt -- *(-mm+15)

# Use find(1) to find all directories except the ".svn" ones, then use grep on all *.c/*.h/*.S

# files in each directory.

  $ setopt extendedglob

  $ grep pattern (^.svn/)#*.[xhS](.)  # skips dot files and dot directories

# or - without Zsh

  $ find . -type d ! -name .svn | sed 's/./\\&/g;s|.*|grep whatever &/*.[xhS]|' | sh

# Quote from Usenet

# > I need to write a script that searches through a folder on my Linux

# > home server and copies only files where the width is greater than the

# > height, but it also needs to flatten the directory structure and

# > rename files as it copies.  So the first picture found may be several

# > directories deep in the source but this should be copied to the root

# > of the SD card and named say 00000001.JPG and the next file found

# > where width > height should be copied and renamed 00000002.JPG.

width_greater_than_height() {

  local w h

  identify -format '%w %h' ${1-$REPLY} |

    read w h && ((w > h))

}



typeset -Z8 i=0

setopt extendedglob

for f (**/*.(#i)jp(e|)g(D.+width_greater_than_height)) {

  ((i++))

  cp -- $f /path/to/dest/$i.JPG



}

# remove leading zeros

  $ var=00004402

  $ echo ${var##0#}

# or

  $ var=00004402

  $ echo ${var/(#m)<->/$((MATCH))}

# find all directories, list their contents and output the first item in the above list. 

  $ print -rl /home/me/**/*(D/e{'reply=($REPLY/*(N[-1]:t))'})

# rename a section of a filename, i. e. example.1.{txt,conf,db} or 12345.1.{wav,ogg,mp3} and

# change the 1 to a 2 in the filename while preserving the rest of it. 

  $ zmv -n '(*.)(<->)(.[^.]#)' '$1$(($2+1))$3' # would rename x.0001.y to x.2.y.

  $ zmv -n '(*.0#)(<->)(.[^.]#)' '$1$(($2+1))$3'

# Rename files to lower case

  $ zmv '*' '${(L)f}'