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Terminal - All commands - 11,926 results
perl -pi -e 's:^V^M::g' <filenames>
2009-02-16 21:17:40
User: starchox
Functions: perl
1

That "^M" is Ctrl-M, which is a carriage return, and is not needed in Unix file systems.

Where ^V is actually Ctrl-V and ^M is actually Ctrl-M (you must type these yourself, don't just copy and paste this command). ^V will not be displayed on your screen.

cd /usr/ports; grep -F "`for o in \`pkg_info -qao\` ; \ do echo "|/usr/ports/${o}|" ; done`" `make -V INDEXFILE` | \ grep -i \|ports@freebsd.org\| | cut -f 2 -d \|
2009-02-16 21:07:35
User: grep
Functions: cd cut grep
-1

only works for freeBSD where ports are installed in /usr/ports

credit to http://wiki.freebsd.org/PortsTasks

sed '1!G;h;$!d'
sed 's/$//'
sed 's/$/<ctrl+v><ctrl+m>/'
2009-02-16 20:53:05
User: SiegeX
Functions: sed
4

The ctrl+v,ctrl+m portion represents key presses that you should do. If you do it successfully you should see a ^M character appear.

sed '/./,$!d'
sed '1,55d'
2009-02-16 20:36:25
User: grep
Functions: sed
-4

deletes first 55 lines; change the 55 to whatever number

newhostname=$(hostname | awk -F. '{print $1 "." $2}'); ipaddress=$(nslookup `hostname` | grep -i address | awk -F" " '{print $2}' | awk -F. '{print $3 "." $4}' | grep -v 64.142);PS1="[`id -un`.$newhostname.$ipaddress]"' (${PWD}): '; export PS1
2009-02-16 20:11:53
User: simardd
-4

changes the PS1 to something better than default.

[username.hostname.last-2-digits-of-ip] (current directory)

sed 's/$'"/`echo \\\r`/"
gpg --encrypt --recipient 'Foo Bar' foo.txt
2009-02-16 19:58:13
User: mariusz
Functions: gpg
4

gpg command to encrypt a file on the command line.

gpg --output foo.txt --decrypt foo.txt.pgp
2009-02-16 19:56:19
User: mariusz
Functions: gpg
6

gpg command to decrypt a previously encrypted file on the command line.

Can be optionally made into an alias:

alias decrypt='gpg --output foo.txt --decrypt foo.txt.pgp'

find path/to/folder/ -type f -print0 | xargs -0 -n 1 md5sum | awk '{print $1}' | sort | md5sum | awk '{print $1}'
2009-02-16 19:39:37
User: mcover
Functions: awk find md5sum sort xargs
-2

For quick validation of folder's file-contents (structure not taken into account) - I use it mostly to check if two folders' contents are the same.

netstat -putona
2009-02-16 19:14:35
User: starchox
Functions: netstat
6

-p PID and name of the program

-u on a UDP port.

-t also TCP ports

-o networking timer

-n numeric IP addresses (don't resolve them)

-a all sockets

echo "<?php phpinfo(); ?>" | php > phpinfo.txt
echo "SELECT * FROM table; " | mysql -u root -p${MYSQLROOTPW} databasename | sed 's/\t/","/g;s/^/"/;s/$/"/;s/\n//g' > outfile.csv
2009-02-16 18:55:18
Functions: echo sed
8

This command converts a MySQL query directly into a .csv (Comma Seperated Value)-file.

smbcacls //server/sharename file -U username
2009-02-16 18:52:14
User: drossman
Functions: file
1

You can read, add, delete and modify Windows permissions from Linux using smbcacls from the smb-client package.

df / | awk '{print $1}' | grep dev | xargs tune2fs -l | grep create
2009-02-16 18:45:03
User: Kaio
Functions: awk df grep tune2fs xargs
9

Very useful set of commands to know when your file system was created.

for i in `df -P |grep string|cut -f2 -d%|cut -c2-100`; do umount -l -f $i;done
2009-02-16 18:42:00
User: Kaio
Functions: umount
1

Sometimes, you have a lot of NFS in the server and you can't or shouldn't use umount -a. Whis this command, you only umount the fs related to the 'string'

echo "sed -e"|perl -pe 's/sed -e/perl -pe/'
2009-02-16 18:39:06
User: drossman
Functions: echo
-1

Replace sed regular expressions with perl patterns on the command line.

The sed equivalent is: echo "sed -e"|sed -e 's/sed -e/perl -pe/'

dd if=/dev/zero of=/swapfile bs=1M count=64; chmod 600 /swapfile; mkswap /swapfile; swapon /swapfile
2009-02-16 18:36:38
User: starchox
Functions: chmod dd mkswap swapon
8

In addition to a swap partition, Linux can also use a swap file. Some programs, like g++, can use huge amounts of virtual memory, requiring the temporary creation of extra space.

find . -type f -perm +0111 -print
scp user@hostb:file user@hostc:
2009-02-16 18:33:08
User: drossman
Functions: scp
8

While at the command line of of hosta, scp a file from remote hostb to remote hostc. This saves the step of logging into hostb and then issuing the scp command to hostc.

function man2pdf(){ man -t ${1:?Specify man as arg} | open -f -a preview; }
2009-02-16 18:29:35
User: piXelz
Functions: as man
4

Simply pass an argument to the script to convert the manual page to a PDF:

man2pdf drutil
/System/Library/CoreServices/Menu\ Extras/User.menu/Contents/Resources/CGSession -suspend
/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -r -domain local -domain system -domain user