10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hey everyone,
I am trying to extract column values from a column in a tab-delimited text file and overlay them in a 2nd tab-delimited text file using a V-lookup type script in Unix bash.
These are the 1st few rows of the 1st input file IN1:
rsid chromosome position allele1 ... (10 Replies)
Discussion started by: Geneanalyst
10 Replies
2. Shell Programming and Scripting
The bash bash below extracts the oldest folder from a directory and stores it in filename
That result will match a line in bold in input. In the matching line there is an_xxx digit in italics that
(once the leading zero is removed) will match a line in link. That is the lint to print in output.... (2 Replies)
Discussion started by: cmccabe
2 Replies
3. Shell Programming and Scripting
As part of a bash the below line strips off a numerical prefix from directory 1 to search for in directory 2.
for file in /home/cmccabe/Desktop/comparison/missing/*.txt
do
file1=${file##*/} # Strip off directory
getprefix=${file1%%_*.txt}
... (5 Replies)
Discussion started by: cmccabe
5 Replies
4. Shell Programming and Scripting
In the below portion of a bash script the user selects a file from a directory.
select file in $(cd /home/cmccabe/Desktop/NGS/API/5-14-2016/bedtools;ls);do break;done
files in directory
123_base_counts.txt
456_base_counts.txt
789_base_counts.txt
second portion of bash currently (user... (4 Replies)
Discussion started by: cmccabe
4 Replies
5. Shell Programming and Scripting
Hi I have a problem, I am attempting to write a bash script that goes through a file and can determine how many characters are at a set point in a line starting with QTY+113:100:PCE, If it detects 3 digits (number in bold) then pad it out with 12 zero's
If there are only two digits then pad it... (8 Replies)
Discussion started by: firefox2k2
8 Replies
6. Shell Programming and Scripting
Hi. I need assistance with the replacing of text into a specific file via a bash script.
My bash script, once run, currently provides a menu of computer names to choose.The script copies onto my system various files, depending what computer was selected in the menu.This is working OK.
Now, I... (1 Reply)
Discussion started by: jonesn2000
1 Replies
7. Shell Programming and Scripting
Hi there, im sure this is really simple but i have some strings like this
e1000g123001
e1000g0
nge11101
nge3and i want to create two variables ($DRIVER and $INSTANCE). the first one containing the alpha characters that make up the first part of the string, e.g. e1000g or nge and the... (9 Replies)
Discussion started by: rethink
9 Replies
8. UNIX Desktop Questions & Answers
I have a file with hundreds of records and I need to find those records that have three digits at the beginning and the same three digits at the end.
$GREP '\(\)\(\)\(\)\3\2\1'I
believe this is part of the script but I am not sure how to compare these 3 digits with the 3 digits at the end of... (2 Replies)
Discussion started by: bartsimpsong
2 Replies
9. UNIX for Advanced & Expert Users
Write a quick shell snippet to find all of the IPV4 IP addresses
in any and all of the files under /var/lib/output/*, ignoring
whatever else may be in those files. Perform a reverse lookup on
each, and format the output neatly, like "IP=192.168.0.1,
... (0 Replies)
Discussion started by: choco4202002
0 Replies
10. Shell Programming and Scripting
Dear all,
I have two files like below.
file1
======
x y
==== ===
123 test1
124 test2
125 test3
file2
=======
a b c
=== === ====
123 ... (2 Replies)
Discussion started by: Nayanajith
2 Replies
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)