Commands tagged Linux sorted by votes

Commands tagged Linux (266)

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Converting your Xfig 'fig' files to 'eps' and others

There is a huge number of supported "languages" to which you can export your .fig figures to. See. 'man fig2dev' (http://linux.die.net/man/1/fig2dev).
This is sample output - yours may be different.
0

fig2dev -L eps file.fig file.eps

droidery29 · 2011-04-25 01:02:25 10
How to expire the password to force her change [Linux]

This command is Linux compatible. It will prompt the user for a new password at next logon
This is sample output - yours may be different.
0

chage -d 0 -m 0 -M 60 [user]

mack · 2011-04-28 02:19:59 5
Find all e-mails older than 7 days in the queue and delete them

Find all files in /var/spool/mqueue older than 7 days, pass to perl to efficiently delete them (faster than xargs or -exec when you've got millions or hundreds of thousands to delete). Naturally the type, directory, and file age vars can be adjusted to meet your specific needs.
This is sample output - yours may be different.
0

find /var/spool/mqueue -type f -mtime +7 | perl -lne unlink

mengesb · 2011-08-19 15:22:02 4
Convert windows text file to linux text document
This is sample output - yours may be different.
0

tr -d "\r" < dos.txt > linux.txt

totti · 2011-09-09 18:53:34 3
Remove all unused kernels with apt-get

since awk was already there one can use it instead of the 2 greps. might not be faster, but fast enough
This is sample output - yours may be different.
0

apt-get remove $(dpkg -l | awk "/^ii linux-(image|headers)/ && ! /`uname -r`/ {print \$2}")

_john · 2011-10-09 13:58:47 4
Install 4 new package files

after kernel build with make deb-pkg, I like to install the 4 newest packages that exist in the directory. Beware: might be fewer for you....
This is sample output - yours may be different.
0

sudo dpkg -i `ls -tr *.deb | tail -n4`

_john · 2011-10-09 14:20:11 3
Unmount all CIFS drives

Unmounts all CIFS-based network drives. Very nice for shutting down network mounts on a Linux laptop just prior to going to sleep. Show Sample Output
This is sample output - yours may be different.
```
UNMOUNTING /home/danf/gmounts/G... [DONE]
UNMOUNTING /home/danf/gmounts/H... [DONE]
UNMOUNTING /home/danf/gmounts/N... [DONE]
```
0

for D in `mount -lt cifs | sed 's/.*on $\/.\+$ type.*/\1/'`; do echo -n "UNMOUNTING $D..."; sudo umount $D; echo " [DONE]"; done;

crazedsanity · 2011-10-19 18:14:19 4
Writes ID3 tags with track numbers for mp3s in current directory

Assumes that the files are named in numerical order (ie. 01 Filename.mp3). It will set the track number as tracknumber/totaltracks (ie. 1/14). This will write both ID3v1 and ID3v2 tags. Note: This only writes the track numbers.
This is sample output - yours may be different.
0

x="1" && z="`ls -l * | wc -l`"; for y in *.mp3; do `id3v2 --TRCK "$x/$z" "$y"`; x=$[$x+1]; done

robotmachine · 2011-11-17 18:52:59 4

You need to have figlet(for font) and cowsay installed then add it to your .bashrc file.You can see it every time after start a new session. Show Sample Output

figlet -f $(ls /usr/share/figlet/fonts/*.flf | shuf -n1) namakukingkong | cowsay -n -f $(ls /usr/share/cows/ | shuf -n1)

namakukingkong · 2011-11-25 13:54:06 4

Realtime clock cowsay

You need to have figlet(for font) and cowsay installed. Just copy n paste this command and you can see..... Show Sample Output

watch -tn1 'figlet -f slant `date +%T` | cowsay -n -f telebears'

namakukingkong · 2011-11-25 14:35:01 50

Find and sort by Resident Size of each process on the system in MB

Show Sample Output

sudo ps aux --sort:rss | awk '{print $2"\t"$11": "$6/1024" MB"}' | column -t | less

threv · 2011-12-08 17:23:18 3

Stop iptables completely

If you changed the default policy on any chain other than filter table chain's, this won't be enough.
This is sample output - yours may be different.
0

iptables -P INPUT ACCEPT; iptables -P FORWARD ACCEPT; iptables -P OUTPUT ACCEPT; for table in `cat /proc/net/ip_tables_names`; do iptables -t $table -F; iptables -t $table -Z; iptables -t $table -X; done

dash · 2011-12-15 18:19:34 41
Show CPU idle and used time

This command displays the CPU idle + used time using stats from /proc/stat. Show Sample Output
This is sample output - yours may be different.
```
idle 	 used
72.4139% 21.1866%
```
0

grep "cpu " /proc/stat | awk -F ' ' '{total = $2 + $3 + $4 + $5} END {print "idle \t used\n" $5*100/total "% " $2*100/total "%"}'

Goez · 2012-01-21 04:12:50 3
Partition a new disk as all one partition tagged as LINUX_NATIVE

Creates a single primary partition starting at sector 0 and extending to the end of the disk. Use with care.
This is sample output - yours may be different.
0

echo "0,,L" | sfdisk /dev/sdX

twobitsprite · 2012-04-09 18:36:24 5
Listing all your bundles Entities files to issue a doctrine:generate:entities

When I do a major change in my entities, I want to find a way to find all my Entities names and create the commande for me. So instead of doing ls src/Your/OwnBundle... and then do it manually, this helps a lot. Show Sample Output
This is sample output - yours may be different.
```
app/console doctrine:generate:entities YourOwnBundleName:Catalog
app/console doctrine:generate:entities YourOwnBundleName:Site
app/console doctrine:generate:entities YourOwnBundleName:User
app/console doctrine:generate:entities YourOwnBundleName:Software
app/console doctrine:generate:entities YourOwnBundleName:Template
...
```
0

find ./src -type d -name "Entity" | xargs ls -A | cut -d . -f1 | sed 's_^_app/console doctrine:generate:entities YourOwnBundleName:_'

renoirb · 2012-04-11 21:28:02 3

Pretty print all of the Linux vm sysctls for your viewing pleasure

Sometimes you want to see all of the systcls for a given $thing. I happened to need to easily look at all of the vm sysctls between two boxes and compare them. This is what I came up with. Show Sample Output

find /proc/sys/vm -maxdepth 1 -type f | while read i ; do printf "%-35s\t%s\n" "$i" "$(<$i)" ; done | sort -t/ -k4

SEJeff · 2012-05-25 16:34:16 7

Kill the process *group* containing a process named svscan (djb's daemontools)

Daemontools[1] won't always properly reap it's children. Sometimes when you need to kill the main svscan process, you want to also clean up all of it's children. The way to do that is to send a signal to the entire process group. It is a bit tricky [1] http://cr.yp.to/daemontools.html
This is sample output - yours may be different.
0

kill -9 -$(ps x -o "%c %r" | awk '/svscan/{print $2}')

SEJeff · 2012-05-25 16:39:02 9
Disable an interface's multicast filter for testing

Disabling an interface's multicast filter is like disabling IGMP snooping on a switch. It is useful for testing and troubleshooting.
This is sample output - yours may be different.
0

ifconfig eth0 allmulti

SEJeff · 2012-05-25 16:43:41 3
Print a list of all disks or volumes attached to a system
This is sample output - yours may be different.
0

awk '{if ($NF ~ "^[a-zA-Z].*[a-zA-Z]$" && $NF !~ "name" || $NF ~ "c[0-9]+d[0-9]+$") print "/dev/"$NF}' /proc/partitions

SEJeff · 2012-05-25 16:59:33 3
Print out all partitions on a system
This is sample output - yours may be different.
0

awk '{if ($NF ~ "^[a-zA-Z].*[0-9]$" && $NF !~ "c[0-9]+d[0-9]+$" && $NF !~ "^loop.*") print "/dev/"$NF}' /proc/partitions

SEJeff · 2012-05-25 17:01:15 4
Get a server's serial number or Dell service tag from within linux

This returns the hardware serial number. Dell calls this the "Service Tag" and it can be used to retrieve warranty information or used for RMA / repairs. Show Sample Output
This is sample output - yours may be different.
```
9WFXHF1
```
0

dmidecode -s system-serial-number

SEJeff · 2012-05-25 17:03:37 7
PulseAudio: set the volume via command line

This command sets the volume for the main PulseAudio "sink" (usually the ALSA output interface) to the maximum, 100% (the 0x10000 in the command). To set it to an arbitrary volume, replace 10000 with the volume you want times 100 (so 75% becomes 7500).
This is sample output - yours may be different.
0

pacmd set-sink-volume 0 0x10000

andycandet · 2012-07-17 15:02:56 3
Remount all NFS mounts on a host

`mount -o remount` doesn't pick up new NFS options (eg. timeo, soft, retrans, etc) so you need to do a full mount/remount cycle. This one-liner makes it quick and easy :) Update your fstab with the new options, then run it. Show Sample Output
This is sample output - yours may be different.
```
/mnt/foo
ok :)
/mnt/bar
ok :)
```
0

for P in $(mount | awk '/type nfs / {print $3;}'); do echo $P; sudo umount $P && sudo mount $P && echo "ok :)"; done

amatix · 2012-10-14 22:39:58 4
avoid ssh hangs using jobs

Execute commands serially on a list of hosts. Each ssh connection is made in the background so that if, after five seconds, it hasn't closed, it will be killed and the script will go on to the next system. Maybe there's an easier way to set a timeout in the ssh options...
This is sample output - yours may be different.
0

for host in $MYHOSTS; do ping -q -c3 $H 2>&1 1>/dev/null && ssh -o 'AllowedAuthe ntications publickey' $host 'command1; command2' & for count in 1 2 3 4 5; do sleep 1; jobs | wc -l | grep -q ^0\$ && continue; done; kill %1; done

a8ksh4 · 2012-11-13 23:12:27 5
avoid ssh hangs using jobs

Cleaned up and silent with &>/dev/null at the end. Show Sample Output
This is sample output - yours may be different.
```
Nothing.
```
0

for host in $HOSTNAMES; do ping -q -c3 $host && ssh $host 'command' & for count in {1..15}; do sleep 1; jobs | wc -l | grep -q ^0\$ && continue; done; kill %1; done &>/dev/null

somaddict · 2012-11-16 02:31:27 4
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archlinux:Delete packages from pacman cache that are older than 7 days

for debian/ubuntu

randomize hostname and mac address, force dhcp renew. (for anonymous networking)

this string of commands will release your dhcp address, change your mac address, generate a new random hostname and then get a new dhcp lease.

pretend to be busy in office to enjoy a cup of coffee

Create a progress dialog with custom title and text using zenity.

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

tar and bz2 a set of folders as individual files

This version will work if "*screenflow" returns any results with weird characters, and will actually compress the tarballs.

Stream (almost) any music track in mplayer

Just give it an artist and/or song at the end of the command as shown.

Create cheap and easy index.html file

If your admin has disabled Apache's directory index feature but you want to have a cheap way to enable it for one folder, this command will just create an index.html file with a link to each file in the directory (including the index.html file, which is not ideal but makes the command much simpler). The HTML isn't even remotely compliant, but it could easily be improved on. Also, the command needs to be run each time a file is added or removed to update the index.html file.

Find Duplicate Files (based on MD5 hash) -- For Mac OS X

This works on Mac OS X using the `md5` command instead of `md5sum`, which works similarly, but has a different output format. Note that this only prints the name of the duplicates, not the original file. This is handy because you can add `| xargs rm` to the end of the command to delete all the duplicates while leaving the original.

Matrix Style

I like the fact the Patola's version uses only ones and zeros, but I also like the sparse output of the other versions. This one combines both of those features and eliminates some unnecessary cruft. You can vary the sparseness by changing "$(($RANDOM % 5))" to another number. The number in this term "$(($RANDOM % 4))" controls how frequently the numbers are output bold.

Erase to factory a pendrive, disk or memory card, and watch the progress

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Commands tagged Linux (266)

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