/linux-commands

Set of useful linux commands

Linux Commands

This repo aims to list the set of Linux commands that helped me in my work life.

curl

Transfer data from or to a server.

See Man Page

cut

Remove sections from each line of files.

See Man Page

Examples

Display the first field in a line with , as delimiter:

cut -d ',' -f 1 names.csv

find

Search for files in a directory hierarchy.

See Man Page, Tutorial

Examples

Remove large file from a folder

find . -size +2M -exec rm {} \;

locate

Identify location(s) of a file.

Note that it relies on a database for this search, which can be updated with sudo updatedb.

See Man Page, Tutorial

lsof

List on its standard output file information about files opened by processes.

An open file may be a regular file, a directory, a block special file, a character special file, an executing text reference, a library, a stream or a network file (Internet socket, NFS file or UNIX domain socket.) A specific file or all the files in a file system may be selected by path.

See Man Page, Tutorial

Examples

Show all processes using port 2377:

sudo lsof  -i :2377

nc

Read and write data across network connectiosn, using TCP or UDP protocol.

See Man Page

pidof

Find the process ID of a running program.

sed

Filter and transform input text. See Man Page

tail

Read a file and outputs the last part of it.

See Man Page,tutorial