Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Having trouble greping a variable
Top Forums Shell Programming and Scripting Having trouble greping a variable Post 302625779 by neutronscott on Wednesday 18th of April 2012 09:22:04 AM
Old 04-18-2012
you don't need to use [ ] at all. but the problem is that you need a space after '['. if takes a command. grep is a command. you can simply use grep there.

Code:
if grep -q "$username" register.txt; then

This User Gave Thanks to neutronscott For This Post:
Hegarz
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

assigning SED output to a variable = trouble!

i'm on a Mac running BSD unix. i have a script in which i ask the user to input the name of a mounted volume. i then call SED to substitute backslashes and spaces in place of the spaces. that looks like this: echo "Enter the name of the volume" read Volume echo "You've chosen \"$Volume\""... (7 Replies)
Discussion started by: hungryd
7 Replies

2. Shell Programming and Scripting

Trouble saving variable

Hi, I have problems when you save a variable of a command. I have put the following line: CONEXION_BAGDAD = $ (grep-c "Please login with USER and PASS" $ LOG_FILE_BAGDAD) But I returned the following error: syntax error at line 67: `CONEXION_BAGDAD = $ 'unexpected Because it can happen?... (2 Replies)
Discussion started by: danietepa
2 Replies

3. Shell Programming and Scripting

Trouble with passing Variable from bash to awk gsub command

Would really appreciate it if someone could point out my mistake in this line of code, i've been staring blankly at it trying everything i can think of some time now and coming up with nothing. #!/bin/bash echo "Enter Username" read Username awk -F: -v var=${Username} '/^var:/... (9 Replies)
Discussion started by: Nostyx
9 Replies

4. Shell Programming and Scripting

Trouble with passing variable to sed

Here is my code #!/bin/bash username=gnowicki sed '$s/$/ $username/' < sshd_config 1 <> sshd_config what this is supposed to do is take the name gnowicki and put it at the end of the last line of the sshd_config and it works except not using the variable, if I put the name "gnowicki" where... (2 Replies)
Discussion started by: slufoot80
2 Replies

5. Shell Programming and Scripting

Trouble appending string constant to variable

Hi. I define my variables as: month=jul DD=17 YEAR=2012 transmission_file_name_only=test_$month$DD$YEAR_partial.dat However when I run my script the variable 'transmission_file_name_only' resolves to: File "/downloads/test_jul17.dat" not found. How can I append this '_partial'... (3 Replies)
Discussion started by: buechler66
3 Replies

6. Shell Programming and Scripting

Trouble with variable assignment and reading in shell scripting

Hi, I have an inputfile with some table names in it. For ex: t_arnge t_profl t_fac I need a script which reads the line one by one and need to assign to some dynamic variable. If to explain the above example: i need some a=table_name1 table_name1=t_arnge in first time and... (4 Replies)
Discussion started by: Ravindra Swan
4 Replies

7. Shell Programming and Scripting

Trouble reading content of file from a variable

Hi , i have a parameter which has path of a file. Now i need to have another parameter with the content of that file. I tried the belwo script , can any one please help. I dont want to use cat command to read. Can we do it with out using cat command. while read line do... (9 Replies)
Discussion started by: Ravindra Swan
9 Replies

8. Shell Programming and Scripting

Trouble Assigning Variable with Function

OSX 10.9 Good morning/afternoon/evening. I'm hoping to get some insight on assigning a variable when calling a function. The code below looks at my array and checks if the path exists. My actual code will have multiple arrays and I would like to define a specific array when I call the... (6 Replies)
Discussion started by: sudo
6 Replies

9. Shell Programming and Scripting

Trouble with variable and command assignment

I have a section of a script where I want to check a log file for a certain oracle error and if there is only one error (and it is ORA-39152) then I want to email that script is complete. Otherwise email failure and log. Somehow with this while the log only has one error and it is ORA-39152, I... (5 Replies)
Discussion started by: cougartrace
5 Replies

10. Shell Programming and Scripting

Trouble with setting a variable with vastool

Hi I have this command that when put on the command line it returns the output the way I want it. /opt/quest/bin/vastool list -a groups | grep testdev_li | grep dev | awk -F"" 'NF>2{print $2}' | cut -c2- | tr '\n' '|' The output of this is ... (2 Replies)
Discussion started by: ajetangay
2 Replies

LEARN ABOUT HPUX

chsh

chsh(1) 						      General Commands Manual							   chsh(1)

NAME

       chsh - change default login shell

SYNOPSIS

       login-name [shell]

       login-name [shell]

       login-name [shell]

       login-name [shell]

DESCRIPTION

       The command changes the login-shell for a user's login name in the repository (see passwd(1)).

       The  DCE  repository is only available if Integrated Login has been configured; see auth.adm(1M).  If Integrated Login has been configured,
       other considerations apply.  A user with appropriate DCE privileges is capable of modifying a user's shell;  this  is  not  dependent  upon
       superuser privileges.

       If the repository is not specified (as in [login-name]), the login shell is changed in the file only.

       Run after running to make sure the information was processed correctly.

   Notes
       The  command  is  a hard link to the command. When is executed, actually the command gets executed with appropriate arguments to change the
       user login shell in the repository specified in command line. If no repository is specified, the login shell is changed in the file.

   Arguments
	      login-name  A login name of a user.

	      shell	  The absolute path name of a shell.  If the file exists, the new login shell must be listed in that file.  Otherwise, you
			  can specify one of the standard shells listed in the getusershell(3C) manual entry.  If shell is omitted, it defaults to
			  the POSIX shell,

   Options
       The following option is recognized:

	      Specify the repository to which the operation is to be applied.
		     Supported repositories include and

   Security Restrictions
       You must have appropriate privileges to use the optional login-name argument to change another user's login shell.

NETWORKING FEATURES

   NFS
       File can be implemented as a Network Information Service (NIS) database.

EXAMPLES

       To change the login shell for user to the default:

       To change the login shell for user to the C shell:

       To change the login shell for user to the Korn shell in the DCE registry:

WARNINGS

       If two or more users try to write the file at the same time, a passwd locking mechanism was devised.  If this locking  fails  after  subse-
       quent retrying, terminates.

AUTHOR

       was developed by HP and the University of California, Berkeley.

FILES

SEE ALSO

       chfn(1), csh(1), ksh(1), passwd(1), sh(1), sh-posix(1), getusershell(3C), pam(3), passwd(4), shells(4).

																	   chsh(1)
All times are GMT -4. The time now is 10:14 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy