10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hello.
How to remove first word from line. The line may or may not start with blank.
NEW_PARAM1=$(magic-command " -t --protocol=TCP -P 12345-u root -h localhost ")
NEW_PARAM2=$(magic-command "-t --protocol=TCP -P 12345 -u root -h localhost ")
I want NEW_PARAM1 equal to NEW_PARAM2 equal ... (2 Replies)
Discussion started by: jcdole
2 Replies
2. Shell Programming and Scripting
I have a file: file.txt, which contains the following data in it.
This is a file, my name is Karl, what is this process, karl is karl junior, file is a test file, file's name is file.txt
My name is not Karl, my name is Karl Joey
What is your name?
Do you know your name and... (3 Replies)
Discussion started by: anuragpgtgerman
3 Replies
3. Shell Programming and Scripting
Hi All,
Hope you guys had a wonderful weekend
I have a scenario where in which I have to read a file line by line
and check for few words before redirecting to a file
I have searched the forum but,either those answers dint work (perhaps because of my wrong under standing of how IFS... (6 Replies)
Discussion started by: Kingcobra
6 Replies
4. Shell Programming and Scripting
Hello All,
I am running a command find . -name amp.cfg | cut -c 3- which gives me output something like below
rel/prod/amp.cfg
rel/fld/amp.cfg
deb/detail/amp.cfg
deb/err/amp.cfg I want to remove trailing "/amp.cfg" so that i should get output something like... (7 Replies)
Discussion started by: anand.shah
7 Replies
5. Shell Programming and Scripting
Hi Guys, :p
I have a file like this:
2010-04-25 00:00:30,095 INFO - ]- start process U100M4
2010-04-25 00:00:30,096 DEBUG - ] -- call EJB
2010-04-25 00:00:30,709 INFO - - end processU100M4
2010-04-25 00:00:30,710 DEBUG - got message=Sorry
I want to out put format.
2010-04-25... (5 Replies)
Discussion started by: ooilinlove
5 Replies
6. Shell Programming and Scripting
Hi Guys,
I have a file like this:
wwwe 1 ioie ewew yyy uuu 88
erehrlk 4 ihoiwhe lkjhassad lkhsad yyy mmm 45
jhash lhasdhs lkhsdkjsn ouiyrshroi oihoihswodnw oiyhewe yyy ggg 77
I want to remove everything after "yyy" and including "yyy" from each line in the file.
So I want:... (2 Replies)
Discussion started by: npatwardhan
2 Replies
7. Shell Programming and Scripting
Hi All,
If my file is:
Wed Sep 9 22:45:14 EDT 2009
sftp> sftp> sftp> sftp> sftp> sftp> sftp> sftp> sftp> sftp> sftp> sftp> sftp>
This is log file generated from transfer...
sftp> sftp> sftp> sftp> Files placed properly....
sftp> sftp> sftp>
How can I remove "sftp>" word from this... (4 Replies)
Discussion started by: darshakraut
4 Replies
8. UNIX for Dummies Questions & Answers
I have a file from which the Header and the Trailer lines need to be removed. They are confirmed to be the first and the last lines in the file.
I have tried a few commands, but not successful yet. It needs to be implemented urgently, hence any help is greatly appreciated.
Raghu
----------... (1 Reply)
Discussion started by: ragz_82
1 Replies
9. UNIX for Dummies Questions & Answers
Hey All,
On commad promt of a shell..
How can we move our cursor word by word.
Like Ctrl+A takes to the starting of the command...
Any shortcut like that..?
Thanks
pbsrinivas (1 Reply)
Discussion started by: pbsrinivas
1 Replies
10. Shell Programming and Scripting
Greetings.
I am struggling with a shell script to make my life simpler, with a number of practical ways in which it could be used. I want to take a standard text file, and pull the 'n'th word from each line such as the first word from a text file.
I'm struggling to see how each line can be... (5 Replies)
Discussion started by: tricky
5 Replies
CAT(1) BSD General Commands Manual CAT(1)
NAME
cat -- concatenate and print files
SYNOPSIS
cat [-beflnstuv] [-] [file ...]
DESCRIPTION
The cat utility reads files sequentially, writing them to the standard output. The file operands are processed in command line order. A
single dash represents the standard input, and may appear multiple times in the file list.
The word ``concatenate'' is just a verbose synonym for ``catenate''.
The options are as follows:
-b Implies the -n option but doesn't number blank lines.
-e Implies the -v option, and displays a dollar sign ('$') at the end of each line as well.
-f Only attempt to display regular files.
-l Set an exclusive advisory lock on the standard output file descriptor. This lock is set using fcntl(2) with the F_SETLKW command.
If the output file is already locked, cat will block until the lock is acquired.
-n Number the output lines, starting at 1.
-s Squeeze multiple adjacent empty lines, causing the output to be single spaced.
-t Implies the -v option, and displays tab characters as '^I' as well.
-u The -u option guarantees that the output is unbuffered.
-v Displays non-printing characters so they are visible. Control characters print as '^X' for control-X; the delete character (octal
0177) prints as '^?'. Non-ascii characters (with the high bit set) are printed as 'M-' (for meta) followed by the character for the
low 7 bits.
EXIT STATUS
The cat utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
The command:
cat file1
will print the contents of file1 to the standard output.
The command:
cat file1 file2 > file3
will sequentially print the contents of file1 and file2 to the file file3, truncating file3 if it already exists. See the manual page for
your shell (i.e., sh(1)) for more information on redirection.
The command:
cat file1 - file2 - file3
will print the contents of file1, print data it receives from the standard input until it receives an EOF ('^D') character, print the con-
tents of file2, read and output contents of the standard input again, then finally output the contents of file3. Note that if the standard
input referred to a file, the second dash on the command-line would have no effect, since the entire contents of the file would have already
been read and printed by cat when it encountered the first '-' operand.
SEE ALSO
head(1), hexdump(1), lpr(1), more(1), pr(1), tail(1), view(1), vis(1), fcntl(2)
Rob Pike, "UNIX Style, or cat -v Considered Harmful", USENIX Summer Conference Proceedings, 1983.
STANDARDS
The cat utility is expected to conform to the IEEE Std 1003.2-1992 (``POSIX.2'') specification.
The flags [-belnstv] are extensions to the specification.
HISTORY
A cat utility appeared in Version 1 AT&T UNIX. Dennis Ritchie designed and wrote the first man page. It appears to have been cat(1).
BUGS
Because of the shell language mechanism used to perform output redirection, the command ``cat file1 file2 > file1'' will cause the original
data in file1 to be destroyed! This is performed by the shell before cat is run.
BSD
September 23, 2006 BSD