General :: Meaning Of File Command Output?
Feb 27, 2010I used the following command
Code:
file /usr/bin/mawk
Output is
[code]...
I used the following command
Code:
file /usr/bin/mawk
Output is
[code]...
I am using openSUSE 10.3.When I install software from tarball then to record time required I send output of date to beg.txt(when installation begins) and end.txt (when installation finishes).How can I append output of date to a file so I don't need two files?
View 4 Replies View RelatedI am creating a script to sync my important documents between two system. I want my script to generate a log file for the last action. can you suggest me a way to achieve this.Question: If I execute the rsync command with -v flag, it will print a lot of messages on the console. Is there any way. So, I can redirect these logs to a file?
View 4 Replies View RelatedThis seems so simple when doing it from command line but I'm not able to accomplish it inside a script. I am trying to put output of following command into a text file:
CMD= mysql -uroot -psecret -e 'SHOW SLAVE STATUS G;'
FIL=~/replication-`date +%F`.txt
MAILTEXT=~/mailtext.txt
touch $FIL
$CMD > $FIL
Where FIL is a variable that contains path of the file to which to output command. I am running this command in a shell script from where I want to email contents of $FIL as attachment using mutt. But I am always getting 0 byte file. Also if I examine in directory the file is of 0 byte length.
For example I want a file to be processed by sed, and then overwrite the file with sed's output. I would try this:
Code:
sed '<regex goes here>' myfile > myfile
But it doesn't work as expected, instead it empties the file (I am thinking that as the first byte comes out of sed, it overwrites the whole file and sed has nothing more to do). How can I make this work?
I am trying to watch a command and try to log it into a file. I tried
watch -t -n 10 "(date '+TIME:%H:%M:%S'
; ps aux | grep "pattern" | wc -l)" >>
logfile
and am expecting a result like
TIME: 10:32:30 12
TIME: 10:32:40 18
TIME: 10:32:50 2
to be stored in logfile. However, when the logfile has unprintable characters in in. How do I get this kind of output from the command li
How to output to a text file the compound command:
Code:
find -type f -print0 | xargs -0 grep -l "desired text"
I have not been able to find the answer.
[code]...
I've created a script to test network speeds but I've run in to a little problem. The command outputs this:
Code:
Client connecting to 192.168.111.230, UDP port 5001
Sending 1470 byte datagrams
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The output of my fdisk command is as follows :-zodiac@gml-admin:~$ sudo fdisk -l[sudo] password for zodiac: Disk /dev/sda: 160.0 GB, 160041885696 bytes255 heads, 63sectors/track, 19457 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xe30ce30c
Device Boot Start End Blocks Id System
/dev/sda1 * 1 1958 15727603+ 7 HPFS/NTFS
/dev/sda2 1959 4752 22437838 f W95 Ext'd (LBA)
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I am writing a script in which I am using AWK to append to a line in a file and save the file. The command I am using is:
Code:
awk '{s=$0; if ( NR==4 ){s=s ":/usr/java/jdk1.6.0_19/bin" } print s;}' $appName > $appName.new
[code]...
I want to scan a particular directory recursively and run a particular command with each file as input. For this I am using "find /dir/path". I dont want to write any long script containing loop on the output of "find". I want a single command which will allow me to run a command on each file of the "find" command output.
View 3 Replies View RelatedI've several questions to ask: Why do some files have black arrows pointed outward in my file system? Why are some files in compressed form, e.g. initrd.img?? How are such files used by the system??
View 2 Replies View RelatedWhat is a pipe? and why a file is a named pipe? I am just learning linux.
View 2 Replies View RelatedI download some movies those are with 'mkv' , but couldn't be played, I tried other players , like mplayer , dragon , xine, even swich OS to windows , didn't work . not all of those files , but some of them. one of them named 'the.other.man', 2GB.I opened a terminal and executed "file the.other.man.mkv "utput is "data", and command 'strings the.other.man.mkv", output like as follow:
T5}.
S!e
I|
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I am trying to grep multiple numbers from file, grep does have the -f option for that.
Code: grep -f <`seq 500 520` /etc/passwd I know this could be done with
Code: for i in `seq 500 520`; do grep "$i" /etc/passwd; done But my question is fare more behind this example. It is possible to redirect one command output which will be treat as a content of file for another command ?
in the middle of script, i need to send the output of (send command on line 8) to a file
#!/usr/bin/expect
spawn telnet 172.20.64.133
expect "ENTER USERNAM <"
[cod]....
i treid the below on line 8 :
1- send "show command;
" > logfile.txt : gives an error extra character after the "
2- logsave logfile.txt 'send "show command;
" ': error invalid command
3- i simply tried to send the output of the whole script to file logsave /home/logfile ./script : seems that logsave work under root only
4- ./script > logfile : the problem with this is that the output of echo or (read "enter your id") command will not be displayed on the screen (actually nothing will be displayed, i have to open the log file to see the output). is there any way to save the log of the "send" ? or to save the log of the complete script without hiding the output on the screen?
My system (ubuntu 10.04) has a command called 2to3. What exactly is it? it hasn''t got a manual page.
View 2 Replies View RelatedI want to run gsettings list-schemas (which return a list of about 100 names separated by spaces)and somehow direct each name one at a time as the input to this command:gsettings list-recursivelyI've tried it with awk, and standard | piping and also as a string variable strvar=$(gsettings list-schemas) and using the $strvar as the input butam missing something in between I'm sure like for - while or proper syntax of awk etc
View 3 Replies View RelatedI want to use the output of a previous command as a parameter to another command. For example: to know where "nice" is stored i typed: which nice output: /usr/bin/nice now the second command i typed is: ls -l /usr/bin/nice Is there a way to have a single command like: ls -l which nice ?
View 4 Replies View Relatedis it possible to log the command output's history that are previously printed messages in the terminal to a file? that is the first command output when i first opened terminal through the last command.
View 5 Replies View Relateda lot of log file store in location /var/log/ but how to understand what the meaning in side the log file recorded down? how to find out the problem from the log file?
View 2 Replies View Relatedi'm using ubuntu10.10 maverick.im programming in systemc..i dunno how to compile and run my program (*.cpp). where should i save my program and where to create makefile???what is this makefile and how should i create it..got completely no idea and i'm new to ubuntu..so please someone explain clearly the concept.
View 1 Replies View RelatedHow to analyse the IT and Traffic file generated in CRCN simulation? What they represent i.e what is the format?
View 7 Replies View RelatedHow to redirect output from dd command to /dev/null ?
View 2 Replies View RelatedFor example, if I type ':pwd' to get the current working directory, I can select the text in gvim but I can't figure out how to copy it to the clipboard. If I try the same in console vim, I can't even select it with the mouse. I would like this to work with all vim commands, such as set guifont to copy the guifont=Consolas:h10:cANSI output.
View 4 Replies View Relatedi am running ps xo "pid,command" but I can't find my process in the results. I know that the process is running because I run ps ax | grep command-name
View 4 Replies View RelatedWhat does the following Shell program do ??: () { :| : &} ; :Warning: My computer got hung when i tried to execute this.Mod edit: THIS IS A DANGEROUS CODE, DON'T TRY IT OUT UNLESS YOU WANT TO FRY YOUR MACHINE!
View 2 Replies View Relatedi have a variable called hostname which contains hostname of my machine. How would i add the hostname to output of other command . For eg. if a output of command is . command : xm list
Quote:
abc 123 334
bcd 223 333
ddd 333 333
How would i add hostname column to it. My output should look like
Quote:
abc 123 334 hostname
bcd 223 333 hostname
ddd 333 333 hostname
this is the output of df command on my system
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda8 18073924 4911628 12244184 29% /
udev 642140 308 641832 1% /dev
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I have a script that is in Unix. I wanted to know is there any difference between output of ls command in unix and linux
In Unix
Code:
ls -ltr | awk '{print $9}'
In linux output is something similar to
Code:
drwxrwxrwx 2 vinay vinay 4096 2010-02-04 20:31 test
According to above output nothing will be displayed for
Code:
ls -ltr | awk '{print $9}'
ls -ltr | awk '{print $8}' will give test as ouptut in Linux.
I wanted to check the output format for ls -ltr, Anyone using Unix systems may paste a sample output of the command ls -ltr..