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awk, bash, curl, find, grep, Linux, sed
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Functions

Commands tagged Linux from sorted by
Terminal - Commands tagged Linux - 241 results
umount -a -t cifs
2012-07-10 11:17:12
User: jameskirk
Functions: umount
Tags: bash Linux mount cifs
3
Up
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Unmount all CIFS drives
Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
dmidecode -s system-serial-number
2012-05-25 17:03:37
User: SEJeff
Tags: Linux dmidecode crimsonfu dell
0
Up
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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 | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
awk '{if ($NF ~ "^[a-zA-Z].*[0-9]$" && $NF !~ "c[0-9]+d[0-9]+$" && $NF !~ "^loop.*") print "/dev/"$NF}' /proc/partitions
2012-05-25 17:01:15
User: SEJeff
Functions: awk
Tags: Linux disk crimsonfu
0
Up
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Print out all partitions on a system
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awk '{if ($NF ~ "^[a-zA-Z].*[a-zA-Z]$" && $NF !~ "name" || $NF ~ "c[0-9]+d[0-9]+$") print "/dev/"$NF}' /proc/partitions
2012-05-25 16:59:33
User: SEJeff
Functions: awk
Tags: Linux disk crimsonfu
0
Up
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Print a list of all disks or volumes attached to a system
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ps aux | awk '{if ($8 ~ "D") print $0}'
2012-05-25 16:53:57
User: SEJeff
Functions: awk ps
Tags: Linux nfs crimsonfu
1
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Find processes stuck in dreaded "D" state aka IO Wait

Lots of fun to run on nfs clients when the server or network connection is having issues

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ifconfig eth0 allmulti
2012-05-25 16:43:41
User: SEJeff
Functions: ifconfig
Tags: Linux networking crimsonfu multicast
0
Up
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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.

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kill -9 -$(ps x -o "%c %r" | awk '/svscan/{print $2}')
2012-05-25 16:39:02
User: SEJeff
Functions: awk kill ps
Tags: Linux kill commandlinefu crimsonfu
0
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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

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find /proc/sys/vm -maxdepth 1 -type f | while read i ; do printf "%-35s\t%s\n" "$i" "$(<$i)" ; done | sort -t/ -k4
2012-05-25 16:34:16
User: SEJeff
Functions: find printf read sort
Tags: Linux sysctl procfs crimsonfu
0
Up
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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.

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lsof +c 15 | awk '{print $1}' | sort | uniq -c | sort -rn | head
2012-05-25 16:31:46
User: SEJeff
Functions: awk sort uniq
Tags: Linux lsof
1
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Top 15 processes with the largest number of open files

See the summary.

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fdisk -l /dev/sda | grep -E sda[0-9]+ | sed s/*// | awk '{printf ("%s %f ",$1,$2/512); if($2%512){ print "BAD" }else {print "Good"} }' | column -t
2012-05-18 08:34:36
User: The_IceMan_Blog
Functions: awk column fdisk grep sed
Tags: Linux partition ssd alignment hdd
1
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Check if you partition are aligned

To get most of you HDD/SSD driver you need to make sure you partition are aligned, if not the speed penalty can be up to 50% slower!

this simple one liner will check to see if each partition start sector is divided by 512

you need to change sda with your driver

if you find the one of your partitions is not aligned use gparted to move the start sector of the partition to be divided of 512

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<ctrl+r>
2012-04-15 16:42:32
User: moollaza
Tags: history bash Linux search
2
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reverse-i-search: Search through your command line history

"What it actually shows is going to be dependent on the commands you've previously entered.

When you do this, bash looks for the last command that you entered that contains the substring "ls", in my case that was "lsof ...". If the command that bash finds is what you're looking for, just hit Enter to execute it. You can also edit the command to suit your current needs before executing it (use the left and right arrow keys to move through it).

If you're looking for a different command, hit Ctrl+R again to find a matching command further back in the command history. You can also continue to type a longer substring to refine the search, since searching is incremental.

Note that the substring you enter is searched for throughout the command, not just at the beginning of the command." - http://www.linuxjournal.com/content/using-bash-history-more-efficiently

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find ./src -type d -name "Entity" | xargs ls -A | cut -d . -f1 | sed 's_^_app/console doctrine:generate:entities YourOwnBundleName:_'
2012-04-11 21:28:02
User: renoirb
Functions: cut find ls sed xargs
Tags: Linux find grep symfony2 Doctrine2 Doctrine
0
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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.

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echo "0,,L" | sfdisk /dev/sdX
2012-04-09 18:36:24
User: twobitsprite
Functions: echo
Tags: Linux sfdisk partition fdisk
0
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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.

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echo -e "o\nn\np\n1\n\n\nw\n" | fdisk /dev/sdX
2012-04-05 13:04:40
User: bunam
Functions: echo fdisk
Tags: Linux fdisk
-3
Up
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Partition a new disk as all one partition tagged as

this work even if a partition table exist

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grep "cpu " /proc/stat | awk -F ' ' '{total = $2 + $3 + $4 + $5} END {print "idle \t used\n" $5*100/total "% " $2*100/total "%"}'
2012-01-21 04:12:50
User: Goez
Functions: awk grep
Tags: Linux awk grep proc stat
0
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Show CPU idle and used time

This command displays the CPU idle + used time using stats from /proc/stat.

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for FILE in `ls -1`; do if [ -L "$FILE" ]; then cp $(readlink "$FILE") ${FILE}_rf; rm -f $FILE; mv ${FILE}_rf "$FILE"; fi; done
2012-01-16 16:39:41
User: unixmonkey1907
Functions: cp mv readlink rm
Tags: bash Linux symlinks links
-2
Up
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Convert all the symbolic links in $PWD to copies of the referenced files
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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
2011-12-15 18:19:34
User: dash
Functions: iptables
Tags: Linux iptables
0
Up
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Stop iptables completely

If you changed the default policy on any chain other than filter table chain's, this won't be enough.

Comments (6) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
apt-config dump
2011-12-13 19:11:02
User: LinuxMan
Functions: apt
Tags: Debian Ubuntu apt Linux dpkg apt-config
5
Up
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Show Apt/Dpkg configuration

Shows all configurations to apt and dpkg, rarely changed, you probably still have the default configuration. Go ahead and explore your configuration if you dare, perhaps change your apt-cache directory, Dir::Cache "var/cache/apt/"; or the names of the log files.

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sudo ps aux --sort:rss | awk '{print $2"\t"$11": "$6/1024" MB"}' | column -t | less
2011-12-08 17:23:18
User: threv
Functions: awk column ps sudo
Tags: memory usage Linux ps awk, sort
0
Up
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Find and sort by Resident Size of each process on the system in MB
Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ifconfig | awk '/inet / {sub(/addr:/, "", $2); print $2}'
2011-12-07 22:27:14
User: snahor
Functions: awk ifconfig
Tags: Linux ifconfig awk
1
Up
Down
Get all IPs via ifconfig
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human_filesize() { awk -v sum="$1" ' BEGIN {hum[1024^3]="Gb"; hum[1024^2]="Mb"; hum[1024]="Kb"; for (x=1024^3; x>=1024; x/=1024) { if (sum>=x) { printf "%.2f %s\n",sum/x,hum[x]; break; } } if (sum<1024) print "1kb"; } '}
2011-12-02 18:21:20
User: ArtBIT
Functions: awk printf
Tags: bash Linux awk filesize gawk human-readable
2
Up
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Convert number of bytes to human readable filesize

Converts a number of bytes provided as input, to a human readable number.

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watch -tn1 'figlet -f slant `date +%T` | cowsay -n -f telebears'
2011-11-25 14:35:01
User: namakukingkong
Functions: watch
Tags: Linux
0
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Realtime clock cowsay

You need to have figlet(for font) and cowsay installed.

Just copy n paste this command and you can see.....

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figlet -f $(ls /usr/share/figlet/fonts/*.flf | shuf -n1) namakukingkong | cowsay -n -f $(ls /usr/share/cows/ | shuf -n1)
2011-11-25 13:54:06
User: namakukingkong
Functions: ls
Tags: Linux
0
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Random cowsay with figlet typhography

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.

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for x in *.mp3; do y=`echo $x | sed 's/...\(.*\)/\1/' | sed 's/.mp3//ig'`; id3v2 --TIT2 "$y" "$x"; done
2011-11-17 18:57:09
User: robotmachine
Functions: sed
Tags: bash Linux mp3 id3
1
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Writes ID3 tags using the file name as the title.

Assumes that the files are named as such: 01-Filename.mp3

If your files are named differently, change the number of periods in the sed 's/...\(.*\)/\1' bit to match the numbers of characters you need to cut off the front of the file.

Note: This only writes the titles.

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x="1" && z="`ls -l * | wc -l`"; for y in *.mp3; do `id3v2 --TRCK "$x/$z" "$y"`; x=$[$x+1]; done
2011-11-17 18:52:59
User: robotmachine
Tags: Linux mp3 id3
0
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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.

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