Condition in bash script Post: 303038798

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Bash: if condition as variable

How can I use a variable that has the conditions for the if statement stored in it? my test script condition=" || || " if "$condition" then echo "true" else echo "false" fi output $ ./test2.sh ./test2.sh: line 3: || || : command not found false

2. Shell Programming and Scripting

Multiple condition checking in bash

Hi All, I am trying to check if two variables have value assigned to it. i am doing it like if ] then echo "Please specify either single hostname or host file for the report" usage exit fi But its not working for it.Even i specify values for both variables it dont go...

3. Programming

if condition in bash

Hi, I have meaning to include an if condition statement in my code to check the directory for existing output files and if its existing i want the program to delete it before doing the succeeding command. i just dont know the correct syntax for it. thanks much guys, this forum has indeed been very...

4. Red Hat

how to use if condition with sed command in BASH

Urgent help with bash scripting 1- i am using grep to find a string called: tinker panic 0 in a file /etc/ntp.conf if the string is not there, i want to add the strings in /etc/ntp.conf file in the first line of the file. if not do nothing or exit. 2- also i want to add # in front of the...

5. UNIX for Dummies Questions & Answers

Bash condition test at the end of string

I want to check (using bash condition test function) if string contains three spaces, ignoring last three spaces at the end of string. string_to_report='foo bar foo bar ' string_to_ignore='foo bar '

6. Shell Programming and Scripting

Add another condition to bash for when not met

In the below I can not seem to add a line that will add Not low if the statement in bold is not true or meet. I guess when the first if statement is true/meet then print low, otherwise print Not low in $(NF + 1). I am not sure how to correctly add this. Thank you :). if(low <= $2 && $2 <=...

7. Shell Programming and Scripting

Bash script if condition not executing

issue is with .txt files

8. Shell Programming and Scripting

Need Multiple checks inside if condition in a bash shell script

Hi, I need to perform the untar and rm operation if the file found is a .tar and does not have test.tar or hello.tar as the file names. Below is the loop to check the same. for tf in *.tar do if ] then found=1 ...

9. Shell Programming and Scripting

Creating a condition on a bash script

I wrote a code to find codons in a DNA string. The only problem I have is how do I make the code only work for a file with DNA. This means the file only has the characters a,c,g,t and no white space characters.

10. UNIX for Beginners Questions & Answers

Awk/bash one liner replacement for a if condition

Hi. I wrote this small bash script, i want to compare second column from file1 with file2 if a pattern matches. Files are small and I am sure that pattern occurs only once. I think this can be rewritten into a awk one liner. Appreciate if someone could give me idea. Whole NR FNR confuse me :o ...

LEARN ABOUT DEBIAN

rbash

RBASH(1)						      General Commands Manual							  RBASH(1)

NAME

       rbash - restricted bash, see bash(1)

RESTRICTED SHELL

       If  bash  is  started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted.  A restricted shell is
       used to set up an environment more controlled than the standard shell.  It behaves identically to bash with the exception that the  follow-
       ing are disallowed or not performed:

       o      changing directories with cd

       o      setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV

       o      specifying command names containing /

       o      specifying a file name containing a / as an argument to the .  builtin command

       o      specifying a filename containing a slash as an argument to the -p option to the hash builtin command

       o      importing function definitions from the shell environment at startup

       o      parsing the value of SHELLOPTS from the shell environment at startup

       o      redirecting output using the >, >|, <>, >&, &>, and >> redirection operators

       o      using the exec builtin command to replace the shell with another command

       o      adding or deleting builtin commands with the -f and -d options to the enable builtin command

       o      using the enable builtin command to enable disabled shell builtins

       o      specifying the -p option to the command builtin command

       o      turning off restricted mode with set +r or set +o restricted.

       These restrictions are enforced after any startup files are read.

       When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.

SEE ALSO

       bash(1)

GNU Bash-4.0							    2004 Apr 20 							  RBASH(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Bash: if condition as variable

Discussion started by: curlee2002

2. Shell Programming and Scripting

Multiple condition checking in bash

Discussion started by: kailash19

3. Programming

if condition in bash

Discussion started by: ida1215

4. Red Hat

how to use if condition with sed command in BASH

Discussion started by: lamoul