1) I wrote a script and gave the desired permissions using "chmod 755 scriptname". Now if i edit the script file, why do i need to set the permission again? Didn't i set the permission attribute.. or if i edit the file, does the inode number of file changes?
2) I am running my unix on a server... (1 Reply)
I have 2 files; one file (say, details.txt) contains the details of employees and another file (say, emp.txt) has some selected employee names. I am extracting employee details from details.txt by using emp.txt and the corresponding code is:
while read line
do
emp_name=`echo $line`
grep -e... (7 Replies)
i'm trying to write a bash script that executes a mysql statement
mysql -sN -e INSERT INTO "$database"."$tableprefix"users (var1, var2,var3) VALUES (123, '1','')
i don't know where to put the quotes
it doesnt work with this one: `
it seems i can only put double quotes around the... (0 Replies)
I have set up a bash script to run a long list of things that I need to time. I would like to redirect the output of time to a file. I have set it up like,
echo "Runtimes for servlet 4, 100K structures" > test_times.txt
echo "" >> test_times.txt
echo "runs where N=10" >> test_times.txt
echo... (7 Replies)
We have a production file system which has 6+ million files with more than 1 tera byte in size. When trying to delete selective files through a weekly script files are not deleted.
Please advise with ideas. (5 Replies)
When I run the below bash I get the expected output, which is the sum of all matching targets less than 20 in $file1. The filename in the directory is fixed (in bold).
for file1 in /home/cmccabe/Desktop/test/panel/reads/16-0000_EPIL70.txt ; do
bname=`basename $file1`
... (3 Replies)
Hi All,
This query is regarding performance improvement of a command.
I have a list of IDs in a file (say file1 with single ID column) and file2 has the data rows.
I need to get the IDs from file1 and search in file2, matching rows from file2 should be written to a file3.
For this... (4 Replies)
Hello, I have a file in the following format
id sample platform R1 R2 gene1 gene2 gene3
1 abc llumina R1_001.fastq.gz R2_001.fastq.gz apoe prnpp asp
2 def llumina R1_001.fastq.gz R2_001.fastq.gz apoe prnpp
3 ghi llumina ... (3 Replies)
I need to find a file and print its contents
I am trying but it is not working
find -path /opt/app-root/src/.npm/_logs -type f -name "*.log" -print
Version
$ bash -version
GNU bash, version 4.4.12(1)-release (x86_64-pc-msys) (1 Reply)
I have multiple xml files where i want to update a subnode if the subnode project points to different project or insert a subnode if it doesn't exist using a xmlstarlet or any other command that can be used in a bash script.
I have been able to update the subnode project if it doesn't point to... (1 Reply)
Discussion started by: Sekhar419
1 Replies
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)