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Commands tagged bash from sorted by
Terminal - Commands tagged bash - 715 results
history | grep ssh
2009-04-03 01:35:52
User: haivu
Functions: grep
Tags: bash csh
-9

After seeing the command you wish to repeat, just invoke it using the ! syntax.

sudo vi /etc/fstab; Go//smb-share/gino /mnt/place smbfs defaults,username=gino,password=pass 0 0<esc>:wq; mount //smb-share/gino
2009-04-02 16:04:35
User: GinoMan2440
Functions: mount sudo vi
4

the middle command between the ; and ; is the vi commands that insert that line into the last line of the file, the esc with the carets is literally hitting the escape key, you have to have the smbfs package installed to do it, I use it to access my iTunes music on my mac from my linux PC's with amarok so I can play the music anywhere in the house. among other things, it allows you to access the files on that share from your computer anytime you're on that network.

read -p 'Username: ' u;sudo -H -u $u xauth add $(xauth list|grep :$(echo ${DISPLAY: -4:2}));sudo su - $u
echo $( (( $( (2**31 -1) ) - $(date +%s) )) )
2009-04-02 05:14:23
User: Chartreuse
Functions: date echo
Tags: bash echo date
0

Echos the number of seconds from the current time till the specified time (Example in command is (2**31-1)) aka the Unix epoch. Just replace that number with the specified date (in seconds past Jan. 1st 1970) and it will return the seconds.

NOTE: Only works in bash

while true; do X=$Y; sleep 1; Y=$(ifconfig eth0|grep RX\ bytes|awk '{ print $2 }'|cut -d : -f 2); echo "$(( Y-X )) bps"; done
function svnundopoint() { if [ -d .undo ]; then r=`svn info | grep Revision | cut -f 2 -d ' '` && t=`date +%F_%T` && f=${t}rev${r} && svn diff>.undo/$f && svn stat>.undo/stat_$f; else echo Missing .undo directory; fi }
2009-03-27 07:14:31
User: codeape
Functions: cut echo grep info
Tags: bash svn
2

Allows you to save progress without committing.

To revert to an undo point, svn revert then apply the undo point with patch.

svn revert -R . && patch -p0 < .undo/2009-03-27_08:08:11rev57

Similar: http://www.commandlinefu.com/commands/view/373/archive-all-files-containing-local-changes-svn

ls /some/directory | sed -rn -e 's/input_file_regex/mv -v & output_file_name/p' | sh
2009-03-25 09:20:15
User: polar
Functions: ls sed
Tags: bash sed
-2

Allows for quick mass renaming, assuming the user has some familiarity with regular expressions. Basically, it replaces the original_file_name in the output of ls with

"mv -v original_file_name new_file_name"

and passes the output to sh.

find -depth . | (while read FULLPATH; do BASENAME=`basename "${FULLPATH}"`; DIRNAME=`dirname "${FULLPATH}"`; mv "${DIRNAME}/${BASENAME}" "${DIRNAME}/${BASENAME// /_}"; done)
2009-03-24 21:04:32
User: mohan43u
Functions: find mv read
-9

Takes filenames and directory names and replace space to '_'.

echo -e "[client]\nuser = YOURUSERNAME\npassword = YOURPASSWORD" > ~/.my.cnf
2009-03-24 19:05:39
User: alperyilmaz
Functions: echo
Tags: mysql bash
0

The file .my.cnf located at user's home directory is used for mysql login. If this file exists, then

mysql -uYOURUSERNAME -pYOURPASSWORD database -e 'SOME SQL COMMAND'

can be replaced with

mysql database -e 'SOME SQL COMMAND'

It saves you from typing!

This is valid for mysqladmin and mysqldump commands as well.

vimdiff foo.c <(bzr cat -r revno:-2 foo.c)
for dir in $(ls); do du -sk ${dir}; done
2009-03-24 13:42:55
User: morlockhq_
Functions: dir du
-15

Sometimes you want to know the summary of the sizes of directories without seeing the details in their subdirectories. Especially if it is going to just scroll off the screen. This one liner summarizes the disk usage of any number of directories in a directory without giving all the details of whats happening underneath.

for i in $(pgrep -v -u root);do kill -9 $i;done
2009-03-24 02:54:52
User: lostnhell
Functions: kill
1

explanation:

grep -- displays process ids

-v -- negates the matching, displays all but what is specified in the other options

-u -- specifies the user to display, or in this case negate

The process loops through all PIDs that are found by pgrep, then orders a forced kill to the processes in numerical order, effectively killing the parent processes first including the shells in use which will force the users to logout.

Tested on Slackware Linux 12.2 and Slackware-current

addfunction () { declare -f $1 >> ~/.bashrc ; }
2009-03-23 12:55:04
User: dagh
Tags: bash
6

Example: To store the function addfunction after you have defined it:

addfunction addfunction
ls | while read ITEM; do echo "$ITEM"; done
2009-03-22 23:33:13
User: fletch
Functions: echo ls read
Tags: bash
10

If you want to operate on a set of items in Bash, and at least one of them contains spaces, the `for` loop isn't going to work the way you might expect. For example, if the current dir has two files, named "file" and "file 2", this would loop 3 times (once each for "file", "file", and "2"):

for ITEM in `ls`; do echo "$ITEM"; done

Instead, use a while loop with `read`:

ls | while read ITEM; do echo "$ITEM"; done
svn status app/models/foo.rb; svn commit -m "Changed file" !$
2009-03-22 23:14:06
User: ggoodale
-4

After a command is run in bash, !$ is set to the last (space-delimited) argument of the command. Great for running several commands against the same file in a row.

for i in {1..15}; do echo $i; done
2009-03-21 23:08:41
User: haivu
Functions: echo
Tags: bash
0

The brace expansion also allows you to count backward:

for i in {15..1}; do echo $i; done

You can also use this construct to create new file or new directory:

mkdir dir{1..3} # Same as mkdir dir1 dir2 dir3

cat /proc/acpi/battery/BAT1/info
2009-03-21 06:09:37
User: Vlad003
Functions: cat
Tags: bash battery
-1

Displays all information about your battery. for just capacity, try replacing cat with

grep -F capacity:

Battery number might be BAT0 instead of BAT1. Just run

cd /proc/acpi/battery; ls

and find out what folder is in that directory and replace that name with BAT1

fc [history-number]
2009-03-20 15:09:43
User: haivu
Functions: fc
Tags: bash
8

If you would like to edit a previous command, which might be long and complicated, you can use the fc (I think it stands for fix command). Invoke fc alone will edit the last command using the default editor (specified by $FCEDIT, $EDITOR, or emacs, in that order). After you make the changes in the editor, save and exit to execute that command. The fc command is more flexible than what I have described. Please 'man bash' for more information.

CDPATH=:..:~:~/projects
2009-03-20 14:50:25
User: haivu
Tags: bash
81

CDPATH tells the cd command to look in this colon-separated list of directories for your destination. My preferred order are 1) the current directory, specified by the empty string between the = and the first colon, 2) the parent directory (so that I can cd lib instead of cd ../lib), 3) my home directory, and 4) my ~/projects directory.

alias ..='cd ..'
2009-03-20 09:57:28
User: eimantas
Functions: alias
Tags: bash unix shell cd
9

Alias two dots to move to parent directory. Put it into your .bashrc or .profile file.

( IFS=:; for p in $PATH; do echo $p; done )
2009-03-19 22:45:47
User: haivu
Functions: echo
Tags: bash
3

The output of "echo $PATH" is hard to read, this is much easier. The parentheses ensure that the change to the input field separator (IFS) only happens the the sub shell and not affecting the current shell.

^Z $bg $disown
2009-03-17 21:52:52
User: fall0ut
47

You're running a script, command, whatever.. You don't expect it to take long, now 5pm has rolled around and you're ready to go home... Wait, it's still running... You forgot to nohup it before running it... Suspend it, send it to the background, then disown it... The ouput wont go anywhere, but at least the command will still run...

ctrl-z
2009-03-16 20:58:31
User: mallegonian
Tags: bash hotkey
11

Hold ctrl and press z to pause the current thread. Run

fg

to resume it.

sort file1.txt | uniq > file2.txt
find . -print | sed -e 's;[^/]*/;|____;g;s;____|; |;g'
2009-03-12 22:25:26
Functions: find sed
-1

NOT MINE! Taken from hackzine.com blog.

It creates a tree-style output of all the (sub)folders and (sub)files from the current folder and down(deeper)

Quoting some of hackzine's words

"Murphy Mac sent us a link to a handy find/sed command that simulates the DOS tree command that you might be missing on your Mac or Linux box. [..split...] Like most things I've seen sed do, it does quite a bit in a single line of code and is completely impossible to read. Sure it's just a couple of substitutions, but like a jack in the box, it remains a surprise every time I run it."