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scripts's Introduction

scripts en general

comando cat

opcion cut

'cut' extrae columnas, '-c 1-10' caracteres de la 1 a la 10.

cat archivo.txt | cut -c 1-10

opcion cut + sort + uniq

'cut' extrae columnas, '-d " "' delimitadas por espacio, '-f 1,2' las columnas 1 y 2, 'sort' ordena lo extraido, 'uniq' solo deja lo que no se repite, '-c' cuenta la cantidad de repetidos.

cat archivo.txt | cut -d " " -f 1,2 | sort | uniq -c

comando grep

opcion awk

'grep 127' busca string 127, 'awk' formatear la salida.

cat archivo.txt | grep 127 | awk ' { print "host ::" $2 " | IP :: " $1 } '

opcion wc

'grep 127' busca string 127, 'wc -l' cuenta cantidad de ocurrencias.

cat archivo.txt | grep 127 | wc -l

comando varios

comando lsof

'lsof -i -P' puertos abiertos, 'grep -i listen' puerto escuchandos.

sudo lsof -i -P | grep -i listen

comando dpkg

'dpkg -l' versiones instaladas, 'grep golang-go' programa especifico.

dpkg -l | grep golang-go

comando apt-cache

'apt-cache madison' versiones disponibles para apt install, ' golang-go' programa especifico.

apt-cache madison golang-go

listar solo directorios

ls -d */

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