Do some learning...

whatis $(compgen -c) 2>/dev/null | less
compgen -c finds everything in your path.
Sample Output
[ (1)                - check file types and compare values
2to3 (1)             - Python2 to Python3 converter
2to3-2.7 (1)         - Python2 to Python3 converter
411toppm (1)         - convert Sony Mavica .411 image to ppm
a2dismod (8)         - enable or disable an apache2 module
a2dissite (8)        - enable or disable an apache2 site / virtual host
a2enmod (8)          - enable or disable an apache2 module
a2ensite (8)         - enable or disable an apache2 site / virtual host
a2p (1)              - Awk to Perl translator
aa-audit (8)         - set a AppArmor security profile to audit mode.
aa-autodep (8)       - guess basic AppArmor profile requirements
...

8
By: bashrc
2013-02-01 00:03:33

4 Alternatives + Submit Alt

  • no loop, only one call of grep, scrollable ("less is more", more or less...)


    12
    ls /usr/bin | xargs whatis | grep -v nothing | less
    michelsberg · 2010-01-26 12:59:47 1

  • 7
    for i in $(ls /usr/bin); do whatis $i | grep -v nothing; done | more
    Abiden · 2010-01-26 06:15:54 0
  • Just realized how needless the 'ls' has been... This version is also multilingual, since there is no need to grep for a special key word ("nothing"/"nichts"/"rien"/"nada"...). And it makes use of all the available horizontal space. Show Sample Output


    3
    whatis /usr/bin/* 2> /dev/null | less
    michelsberg · 2013-01-31 22:25:30 0
  • I like it sorted... 2> /dev/null was also needless, since our pipes already select stdin, only.


    2
    whatis $(compgen -c) | sort | less
    michelsberg · 2013-02-01 09:13:56 0

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