Sponsored Content
Top Forums Shell Programming and Scripting Bash variable available for use outside loop Post 303031101 by cmccabe on Thursday 21st of February 2019 02:23:36 PM
Old 02-21-2019
Bash variable available for use outside loop

In the below for loop, I extract a variable $d which is an id that will change each time. The bash executes the problem that I am having is that p (after the done) is the path with the extracted $d. However, I can not use it in subsequent loops as it is not reconized. I have been trying to change the code so that I can use p in other loops but can not seem to. I added comments as well. Thank you Smilie.

Code:
for f in /path/to/file/*.zip ; do
    echo "Start directory creation: $(date) - file: $f" >> "$d"/processing.log # log start
     bname=`basename $f` # strip of path
     d="$(echo $bname|cut -d_ -f1)" # remove after first underscore
     unzip $f -d /path/to/file/$d  # unzip folder
#rm -rf $file
      cp /path/to/file/$d/Variants/${d}_v1_${d}_RNA_v1/*full.tsv /path/to/file/ # copy full.tsv for analysis
      cp /path/to/file/$d/Variants/${d}_v1_${d}_RNA_v1/*Non-Filtered*.vcf /path/to/file/  # copy Non-Filtered.vcf for analysis
      mv /path/to/file/$d /path/to/file/
    echo "End directory creation: $(date) - file: $f" >> "$d"/processing.log # log end
done  # end loop
p=/path/to/file/$d  # store path in p
echo $p   # test output

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

bash and ksh: variable lost in loop in bash?

Hi, I use AIX (ksh) and Linux (bash) servers. I'm trying to do scripts to will run in both ksh and bash, and most of the time it works. But this time I don't get it in bash (I'm more familar in ksh). The goal of my script if to read a "config file" (like "ini" file), and make various report.... (2 Replies)
Discussion started by: estienne
2 Replies

2. Shell Programming and Scripting

Using variables created sequentially in a loop while still inside of the loop [bash]

I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends. As an example I've written a script called question (The fist command is to show what is the contents of the... (2 Replies)
Discussion started by: DeCoTwc
2 Replies

3. Shell Programming and Scripting

(BASH) Using a loop variable to grep something in a file?

Hi, I have a loop running until a variable L that is read previously in the full script. I'd like to grep some information in an input file at a line that contains the value of the loop parameter $i. I've tried to use grep, but the problem is nothing is written in the FILE files. It seems grep... (5 Replies)
Discussion started by: DMini
5 Replies

4. UNIX for Dummies Questions & Answers

Help with 3 variable bash loop

Hi all! I think someone might be able to solve my problem pretty easily. I am trying to run a bash loop with 3 variables. I know how to do: for var1 in `cat list1`; do for var2 in `cat list2`; do for var3 in `cat list3`; command var1 var2 > var3; done; done; done However, this will run all... (4 Replies)
Discussion started by: torchij
4 Replies

5. Shell Programming and Scripting

Array Variable being Assigned Values in Loop, But Gone when Loop Completes???

Hello All, Maybe I'm Missing something here but I have NOOO idea what the heck is going on with this....? I have a Variable that contains a PATTERN of what I'm considering "Illegal Characters". So what I'm doing is looping through a string containing some of these "Illegal Characters". Now... (5 Replies)
Discussion started by: mrm5102
5 Replies

6. Shell Programming and Scripting

Detail on For loop for multiple file input and bash variable usage

Dear mentors, I just need little explanation regarding for loop to give input to awk script for file in `ls *.txt |sort -t"_" -k2n,2`; do awk script $file done which sorts file in order, and will input one after another file in order to awk script suppose if I have to input 2 or... (4 Replies)
Discussion started by: Akshay Hegde
4 Replies

7. Programming

Global variable in for loop (BASH)

Hello, I'm trying to read the variable "pause" from a for loop without luck. The function is dependant on the outcome of the test within the loop. If i run this, pause is always 0 within the function. Any ideas? Thanks. pause=0 users=1 (for (( ; ; )) do speed=`cat speed.log` ... (7 Replies)
Discussion started by: shadyuk
7 Replies

8. Shell Programming and Scripting

Bash for loop with arrays second variable?

I am fairly new to bash and am not sure how to resolve this: I have a series of geographical long/lat points eg. 50/-30 listed on separate lines in a file called junk2. I have input these into an array and am then using that array in a for loop. Towards the end of the loop I create a file called... (4 Replies)
Discussion started by: lily-anne
4 Replies

9. UNIX for Beginners Questions & Answers

How do I assign the output of a command to a variable within a loop in bash?

In the else of the main if condition . else set lnk = $(readlink -f <path> | cut -d '/' -f7) echo "$lnk" if ] When I run the above on command line , the execution seems to be fine and I get the desired output. But when I try to assign it to a variable within a loop... (12 Replies)
Discussion started by: sankasu
12 Replies

10. UNIX for Beginners Questions & Answers

Bash Variable scope - while loop while reading from a file

Cope sample1: test.sh i=0 echo " Outside loop i = $i " while do i=$(( $i + 1)) echo "Inside loop i = $i " done echo " Out of loop i is : $i " When run output : Outside loop i = 0 Inside loop i = 1 Inside loop i = 2 Inside loop i = 3 Inside loop i = 4 Inside loop i = 5 Inside... (8 Replies)
Discussion started by: Adarshreddy01
8 Replies
BASENAME(3)						     Linux Programmer's Manual						       BASENAME(3)

NAME
basename, dirname - parse pathname components SYNOPSIS
#include <libgen.h> char *dirname(char *path); char *basename(char *path); DESCRIPTION
Warning: there are two different functions basename() - see below. The functions dirname() and basename() break a null-terminated pathname string into directory and filename components. In the usual case, dirname() returns the string up to, but not including, the final '/', and basename() returns the component following the final '/'. Trail- ing '/' characters are not counted as part of the pathname. If path does not contain a slash, dirname() returns the string "." while basename() returns a copy of path. If path is the string "/", then both dirname() and basename() return the string "/". If path is a NULL pointer or points to an empty string, then both dirname() and basename() return the string ".". Concatenating the string returned by dirname(), a "/", and the string returned by basename() yields a complete pathname. Both dirname() and basename() may modify the contents of path, so it may be desirable to pass a copy when calling one of these functions. These functions may return pointers to statically allocated memory which may be overwritten by subsequent calls. Alternatively, they may return a pointer to some part of path, so that the string referred to by path should not be modified or freed until the pointer returned by the function is no longer required. The following list of examples (taken from SUSv2) shows the strings returned by dirname() and basename() for different paths: path dirname basename /usr/lib /usr lib /usr/ / usr usr . usr / / / . . . .. . .. RETURN VALUE
Both dirname() and basename() return pointers to null-terminated strings. (Do not pass these pointers to free(3).) CONFORMING TO
POSIX.1-2001. NOTES
There are two different versions of basename() - the POSIX version described above, and the GNU version, which one gets after #define _GNU_SOURCE /* See feature_test_macros(7) */ #include <string.h> The GNU version never modifies its argument, and returns the empty string when path has a trailing slash, and in particular also when it is "/". There is no GNU version of dirname(). With glibc, one gets the POSIX version of basename() when <libgen.h> is included, and the GNU version otherwise. BUGS
In the glibc implementation of the POSIX versions of these functions they modify their argument, and segfault when called with a static string like "/usr/". Before glibc 2.2.1, the glibc version of dirname() did not correctly handle pathnames with trailing '/' characters, and generated a segfault if given a NULL argument. EXAMPLE
char *dirc, *basec, *bname, *dname; char *path = "/etc/passwd"; dirc = strdup(path); basec = strdup(path); dname = dirname(dirc); bname = basename(basec); printf("dirname=%s, basename=%s ", dname, bname); SEE ALSO
basename(1), dirname(1) COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. GNU
2009-03-30 BASENAME(3)
All times are GMT -4. The time now is 08:15 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy