Felipe Barriga Richards » Bash http://blog.felipebarriga.cl Blog personal de Felipe Barriga Richards Sat, 17 Jul 2010 23:52:35 +0000 en hourly 1 http://wordpress.org/?v=3.0 Listing and deleting files in a terminal (bash) http://blog.felipebarriga.cl/otros/listing-and-deleting-files-in-a-terminal-bash/ http://blog.felipebarriga.cl/otros/listing-and-deleting-files-in-a-terminal-bash/#comments Wed, 05 May 2010 19:03:37 +0000 fbarriga http://blog.felipebarriga.cl/?p=313 There are infinite ways of doing the following commands but here you can find some examples. They can be very useful when you need to manage a lot of files in different directories.

Using ‘find’

Delete empty files using find:

felipe@funstation:$ find dir/ -type f -empty -print0 | xargs rm -f


Or create an script (to watch it before deleting those files):

felipe@funstation:$ find dir/ -type f -empty -print0 | xargs -0 echo rm -f > delete_script.sh


Using ‘du’

List with size all *.txt files on a tree dir:

felipe@funstation:$ du -ha dir/ | grep \.txt


Also that doesn’t match an specific size (256K):

felipe@funstation:$ du -ha dir/ | grep \.txt | grep -v "256K"


Also add another possible value (256K or 512K):

felipe@funstation:$ du -ha dir/ | grep \.txt | grep -v "256K" | grep -v "512K"

or:

felipe@funstation:$ du -ha dir/ | grep \.txt | grep -v "256K\|512K"


Count how many they are:

felipe@funstation:$ du -ha dir/ | grep \.txt | grep -v "256K\|512K" | wc -l


Get only the filenames:

felipe@funstation:$ du -ha dir/ | grep \.txt | grep -v "256K\|512K" | cut -f 2


All in one line (remove trailing newline character):

felipe@funstation:$ du -ha dir/ | grep \.txt | grep -v "256K\|512K" | cut -f 2 | tr "\n" " "


Delete Them:

felipe@funstation:$ du -ha dir/ | grep \.txt | grep -v "256K\|512K" | cut -f 2 | tr "\n" " " | xargs rm -f


Notes: You can get errors with grep because it won’t distinct if the string is in the size or in the filename

Related in spanish: http://systemadmin.es/2009/04/uso-de-xargs-herramientas-unix-ii

]]> http://blog.felipebarriga.cl/otros/listing-and-deleting-files-in-a-terminal-bash/feed/ 0 Acortando el Path en el prompt del terminal (bash) http://blog.felipebarriga.cl/otros/acortando-el-path-en-el-prompt-del-terminal-bash/ http://blog.felipebarriga.cl/otros/acortando-el-path-en-el-prompt-del-terminal-bash/#comments Sat, 05 Sep 2009 23:42:44 +0000 fbarriga http://blog.felipebarriga.cl/?p=61 A mas de alguno le habra pasado que cuando estan en un directorio con muchos niveles de profundidad del tipo:
/home/user/mis_archivos/personal/documentos/documentos-importantes/
Les ocupa la mitad de la linea del terminal. Para solucionar eso solo necesitan cambiar la variable PS1.

La variable original que viene con mi distro (Gentoo) es:

user@computer:$ PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\] \w \$\[\033[00m\]'

Y decidi reemplazarla por esta que restringe el tamaño del path a mostrar:

user@computer:$ PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\] ${PWD/????????????????????????????*/...${PWD:${#PWD}-30}} \$\[\033[00m\]'
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