Commands by Edoard

Commands by Edoard (4)

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Find all folder in /var that contains log in their path and have more than 10 files inside them, print the folder and the count

-L is for following symbolic links, it can be omitted and then you can find in your whole / dir Show Sample Output
This is sample output - yours may be different.
```
/var/www/logs 1337
/var/log 13
```
2

for i in `find -L /var/ -wholename \*log\* -type d`; do COUNT=`ls -1U $i | wc -l`; if [ $COUNT -gt 10 ]; then echo $i $COUNT; fi; done

Edoard · 2013-09-24 09:41:13 9
Changes the initial login group for all users with GID > 500 (specified with LIMIT), to group YOURGROUP

Credit for the awk command goes to: http://www.cyberciti.biz/faq/howto-move-migrate-user-accounts-old-to-new-server/
This is sample output - yours may be different.
0

for I in $(awk -v LIMIT=500 -F: '($3>=LIMIT) && ($3!=65534)' /etc/passwd | cut -f 1-1 -d ':' | xargs); do usermod -g YOURGROUP $I ; done

Edoard · 2013-09-06 15:18:16 7
Creates an old version raid1 with 3 mirror and 3 spares, from partitions of the same disk

The old version (--metadata=0.90) is useful when you want to use kernel raid autodetect and not an initrd image.
This is sample output - yours may be different.
0

mdadm --create /dev/md0 --metadata=0.90 --level=1 --raid-devices=3 --spare-devices=3 /dev/sdb[5-9] /dev/sdb10

Edoard · 2013-09-06 12:14:33 8
Assemble version 0.90 metadata RAID autodetect like in boot

It scans all partition in /proc/partition Show Sample Output
This is sample output - yours may be different.
```
mdadm: /dev/md/0 has been started with 3 drives and 2 spares.
```
0

mdadm --assemble --scan --config /proc/partitions

Edoard · 2013-09-06 12:11:52 7

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Reboot machine when everything is hanging

If the machine is hanging and the only help would be the power button, this key-combination will help to reboot your machine (more or less) gracefully. R - gives back control of the keyboard S - issues a sync E - sends all processes but init the term singal I - sends all processes but init the kill signal U - mounts all filesystem ro to prevent a fsck at reboot B - reboots the system Save your file before trying this out, this will reboot your machine without warning! http://en.wikipedia.org/wiki/Magic_SysRq_key

Change wallpaper for xfce4 >= 4.6.0

Simply changes the wallpaper of xfce4 from the command line. Not for multiple displays.

Display IPs accessing your Apache webserver.

locate bin, src, and man file for a command

show installed but unused linux headers, image, or modules

will show: installed linux headers, image, or modules: /^ii/!d avoiding current kernel: /'"$(uname -r | sed "s/$.*$-$[^0-9]\+$/\1/")"'/d only application names: s/^[^ ]* [^ ]* $[^ ]*$.*/\1/ avoiding stuff without a version number: /[0-9]/!d

Capture FTP Credentials and Commands

set wallpaper on windowmaker in one line

set directly the wallpaper on windowmaker , use this command with display of imagemagick :)

Rename files in batch

Backup a local drive into a file on the remote host via ssh

Analyse writing style of writing style of a document

Style analyses the surface characteristics of the writing style of a document. It prints various readability grades, length of words, sentences and paragraphs. It can further locate sentences with certain characteristics. If no files are given, the document is read from standard input. style is part of "diction" package

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