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add all files not under version control to repository
With the force options the same results can be achieved

seq can produce the same thing as Perl's ... operator.
Optionally, one can use {1..50} instead of seq. E.g. for i in {1..50} ; do echo Iteration $i ; done

Graphically show percent of mount space used
Automatically drops mount points that have non-numeric sizes (e.g. /proc). Tested in bash on Linux and AIX.

Indent a one-liner.
Bash builtin type also indents the function.

Change every instance of OLD to NEW in file FILE
Very quick way to change a word in a file. I use it all the time to change variable names in my PHP scripts (sed -i 's/$oldvar/$newvar/g' index.php)

Get full from half remembered commands
Show all commands having the part known by you. Eg: $apropos pdf | less

postgresql SQL to show count of ALL tables (relations) including relation-size
Postgresql specific SQL - to show count of ALL tables including relation-size (pg_relation_size = used space on filesystem) - might need a VACUUM ANALYZE before showing all counts correctly !

check the filesystem and use a progress bar
if you happen to start with out the -C switch then you a killall -USR1 e2fsck

display a one-liner of current nagios exit statuses. great with netcat/irccat

intercept stdout/stderr of another process


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