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Shell Programming and Scripting
Pass column number as variable to awk and compare with a string.
Post 302924725 by Girish19 on Wednesday 12th of November 2014 05:01:11 AM
11-12-2014
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Hi,
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Input file :
5 20
500 2
20 41
41 0
23 1
Desired output :
5
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20
0
1
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LEARN ABOUT LINUX
on
on(1) User Commands on(1) NAME
on - execute a command on a remote system with the local environment SYNOPSIS
on [-i] [-d] [-n] host command [argument] ... DESCRIPTION
The on program is used to execute commands on another system, in an environment similar to that invoking the program. All environment vari- ables are passed and the current working directory is preserved. To preserve the working directory, the working file system must be either already mounted on the host or be exported to it. Relative path names will only work if they are within the current file system. Absolute path names may cause problems. The standard input is connected to the standard input of the remote command. The standard output and the standard error from the remote command are sent to the corresponding files for the on command. OPTIONS
The following options are supported: -d Debug mode. Prints out some messages as work is being done. -i Interactive mode. Uses remote echoing and special character processing. This option is needed for programs that expect to be talk- ing to a terminal. All terminal modes and window size changes are propagated. -n No Input. This option causes the remote program to get EOF when it reads from the standard input, instead of passing the standard input from the standard input of the on program. For example, -n is necessary when running commands in the background with job control. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWnfscu | +-----------------------------+-----------------------------+ SEE ALSO
chkey(1), rlogin(1), rsh(1), telnet(1), attributes(5) DIAGNOSTICS
unknown host Host name not found. cannot connect to server Host down or not running the server. can't find Problem finding the working directory. can't locate mount point Problem finding current file system. RPC: Authentication error The server requires DES authentication and you do not have a secret key registered with keyserv. Perhaps you logged in without a pass- word. Try to keylogin. If that fails, try to set your publickey with chkey. on server: RPC: can't encode arguments The 10240 byte limit for arguments to be encoded and passed from the sending to the receiving system has been exceeded. Other diagnostic messages may be passed back from the server. BUGS
When the working directory is remote mounted over NFS, a Control-Z hangs the window. Root cannot use on. SunOS 5.10 8 Oct 2003 on(1)