Commands tagged edit (13)

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Pipe STDOUT to vim
The hyphen tells vim to open from STDOUT - saves having to create temporary files.

ps a process keeping the header info so you know what the columns of numbers mean!
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1828 0.0 0.0 5396 476 ? Ss 2008 0:00 /usr/sbin/sshd

list files recursively by size

Find recursively, from current directory down, files and directories whose names contain single or multiple whitespaces and replace each such occurrence with a single underscore.
Note the g for global in the perl expression; without it, only the first occurrence in the name would be replaced.

lines in file2 that are not in file1

List just the executable files (or directories) in current directory
A bit shorter ;)

cat stdout of multiple commands
Concatenate the stdout of multiple commands.

find largest file in /var
find largest file in /var

give a binary the ability to open ports below 1024 as non root user
Binding a server to privileged port on Linux w/o running as root This is applicable to any service using privileged ports (< 1024), for instance to run a HTTP server on port 80 or a LDAP directory server on port 389 for example.

Recall “N”th command from your BASH history without executing it.


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