Give files a random name (don't ask why :-) The function will rename files but maintain their extensions. BUG: If a file doesn't have an extension it will end up with a dot at the end of the name. The parameter '8' for pwgen controls the length of filenames - eight random characters. Show Sample Output
Applies each file operator using the built-in test.
testt /home/askapache/.sq
/home/askapache/.sq
-a True - file exists.
-d True - file is a directory.
-e True - file exists.
-r True - file is readable by you.
-s True - file exists and is not empty.
-w True - the file is writable by you.
-x True - the file is executable by you.
-O True - the file is effectively owned by you.
-G True - the file is effectively owned by your group.
-N True - the file has been modified since it was last read.
Full Function:
testt ()
{
local dp;
until [ -z "${1:-}" ]; do
dp="$1";
[[ ! -a "$1" ]] && dp="$PWD/$dp";
command ls -w $((${COLUMNS:-80}-20)) -lA --color=tty -d "$dp";
[[ -d "$dp" ]] && find "$dp" -mount -depth -wholename "$dp" -printf '%.5m %10M %#15s %#9u %-9g %#5U %-5G %Am/%Ad/%AY %Cm/%Cd/%CY %Tm/%Td/%TY [%Y] %p\n' -a -quit 2> /dev/null;
for f in a b c d e f g h L k p r s S t u w x O G N;
do
test -$f "$dp" && help test | sed "/-$f F/!d" | sed -e 's#^[\t ]*-\([a-zA-Z]\{1\}\) F[A-Z]*[\t ]* True if#-\1 "'$dp'" #g';
done;
shift;
done
}
Show Sample Output
set how many commands to keep in history Default is 500 Saved in /home/$USER/.bash_history Add this to /home/$USER/.bashrc HISTFILESIZE=1000000000 HISTSIZE=1000000
For each directory from the current one, list the counts of files in each of these directories. Change the -maxdepth to drill down further through directories. Show Sample Output
Merge Multiple PDFs In Alphabetical Order
./* is for copying files starting with - .[!.]* is for copying hidden files and avoiding copying files from the parent directory. ..?* is for copying files starting with .. (avoids the directory ..) /path/to/dir the path to the directory where the files should be copied Can also be used as a script. Input argument is /path/to/dir in tcsh, replace .[!.]* with .[^.]*
very handy if you copy or download a/some file(s) and want to know how big it is at the moment
This one-liner is for cron jobs that need to provide some basic information about a filesystem and the time it takes to complete the operation. You can swap out the di command for df or du if that's your thing. The |& redirections the stderr and stdout to the mail command. How to configure the variables. TOFSCK=/path/to/mount FSCKDEV=/dev/path/device or FSCKDEV=`grep $TOFSCK /proc/mounts | cut -f1 -d" "` MAILSUB="weekly file system check $TOFSCK " Show Sample Output
Handle any bad named file which contains ",',\n,\b,\t,` etc
Store the file name as null character separated list
find . -print0 >name.lst
and retrieve it using
read -r -d ""
Eg:
find . -print0 >name.lst;
cat name.lst| while IFS="" read -r -d "" file;
do
ls -l "$file";
done
Show Sample Output
Filter out lines of input that contain 72, or fewer, characters. This uses bash only. ${#i} is the number of characters in variable i. Show Sample Output
Find biggest files in a directory Show Sample Output
It will highlight non-ascii character in a file. those character can cause problem for some application parsing ascii file.
List all text files in the current directory.
files
Useful for C projects where header file names must be unique (e.g. when using autoconf/automake), or when diagnosing if the wrong header file is being used (due to dupe file names) Show Sample Output
This will show you any links that a command follows (unlike 'file -L'), as well as the ultimate binary or script. Put the name of the command at the very end; this will be passed to perl as the first argument. For obvious reasons, this doesn't work with aliases or functions. Show Sample Output
Anyone know how to avoid title casing some words, like 'to', 'of', 'that', etc.?
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