10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello,
I made a mistake in a script and now need to go back and change allot of filenames. I need to change "v4" in filenames to "v3". I was thinking of something like this.
#!/bin/bash
FILELIST=$(ls -f -R *)
for FILE in $FILELIST
do
# create new filename
... (5 Replies)
Discussion started by: LMHmedchem
5 Replies
2. Shell Programming and Scripting
I have a filename with a bunch of periods that I want to replace with underscores, but I don't want to change the extension.
Ex: I want
file.test1.f-1.fig.eps
to be
file_test1_f-1_fig.eps
Using awk, the following line will replace ALL periods with underscores, but I want to leave the... (2 Replies)
Discussion started by: erinbot
2 Replies
3. Shell Programming and Scripting
Hi, all:
I'd love to use shell script to change all filenames under different folders once for all:
I've got over 100 folders, in each of them, there is a file named "a.ppm". I wanna change all these "a.ppm" to "b.ppm", and still . Visually, the directory structure looks like:
and hope... (1 Reply)
Discussion started by: jiapei100
1 Replies
4. Shell Programming and Scripting
Hallo!
I have generated lots of data file which all having this format:
sp*t1overt2*.txt
Now I want to change them in this way:
sp*t2overt1*.txt
The rest of the file names stay unchanged. I know this is kind of routine action in sed or awk, but dont know how! I tried this command:
... (6 Replies)
Discussion started by: forgi
6 Replies
5. UNIX for Dummies Questions & Answers
Hi I have abc_ahb_one.v
abc_ahb_two.v
abc_ahb_three.v
........l
like this
-----upto
abc_ahb_ninety.v in some directory.
I need to change those file names to like below.
... (5 Replies)
Discussion started by: praneethk
5 Replies
6. Shell Programming and Scripting
I have many files similar to this one: AC41_AC85_86_AC128_129_MC171_173_SF_207_FMV.pdf.
I want a directory named AC41 and to put the file AC41_AC85_86_AC128_129_MC171_173_SF_207_FMV.pdf into the directory. Next, a directory named AC85 and put the file into it. Also, continue to cycle through... (1 Reply)
Discussion started by: ndnkyd
1 Replies
7. Shell Programming and Scripting
hi all,
I have a requirement where in i have to read all the filenames based on a pattern from a directory and concatenate all these file names and write it to another file.
i am using the following code to do this
var1=''
for filename in $_DIR/${FILE_NAME}*
do
if
if
then... (7 Replies)
Discussion started by: nvuradi
7 Replies
8. Shell Programming and Scripting
Hi,
i am very new to UNIX, i am trying to loop thru the files in a directory.
I got the filenames into a variable using
$files=`ls`
Here $files will contain
<filename1> <filename2> <filename3>
I want to get one filename at a time and append it to some some text.
forexample, ... (1 Reply)
Discussion started by: silas.john
1 Replies
9. UNIX for Dummies Questions & Answers
Hi,
I need a shell script which changes a bunch of files in a particular directory from lowercase to UPPERCASE.
I am not very familiar with shell scripts so a detailed explanation would be greatly appreciated!!!!
Thanks ini advance!
:) (7 Replies)
Discussion started by: Duke_Lukem
7 Replies
10. Shell Programming and Scripting
Hi,
I have files with all its characters in lower cases. I need to change them to "proper case" (starting char to be come Upper case). How can I? Pls suggest.
for e.g. xyz.txt should become Xyz.txt
TIA
Prvn (7 Replies)
Discussion started by: prvnrk
7 Replies
cd(1) General Commands Manual cd(1)
NAME
cd - change working directory
SYNOPSIS
[directory]
DESCRIPTION
If directory is not specified, the value of shell parameter is used as the new working directory. If directory specifies a complete path
starting with or directory becomes the new working directory. If neither case applies, tries to find the designated directory relative to
one of the paths specified by the shell variable. has the same syntax as, and similar semantics to, the shell variable. must have execute
(search) permission in directory.
exists only as a shell built-in command because a new process is created whenever a command is executed, making useless if written and pro-
cessed as a normal system command. Moreover, different shells provide different implementations of as a built-in utility. Features of as
described here may not be supported by all the shells. Refer to individual shell manual entries for differences.
If is called in a subshell or a separate utility execution environment such as:
(which invokes on accessible directories) does not affect the current directory of the caller's environment. Another usage of as a stand-
alone command is to obtain the exit status of the command.
EXTERNAL INFLUENCES
International Code Set Support
Single- and multi-byte character code sets are supported.
Environment Variables
The following environment variables affect the execution of
The name of the home directory,
used when no directory operand is specified.
A colon-separated list of pathnames that refer to directories.
If the directory operand does not begin with a slash character, and the first component is not dot or dot-dot, searches
for directory relative to each directory named in the variable, in the order listed. The new working directory is set
to the first matching directory found. An empty string in place of a directory pathname represents the current direc-
tory. If is not set, it is treated as if it was an empty string.
EXAMPLES
Change the current working directory to the directory from any location in the file system:
Change to new current working directory residing in the current directory:
or
Change to directory residing in the current directory's parent directory:
Change to the directory whose absolute pathname is
Change to the directory relative to home directory:
RETURN VALUE
Upon completion, exits with one of the following values:
The directory was successfully changed.
An error occurred. The working directory remains unchanged.
SEE ALSO
csh(1), pwd(1), ksh(1), sh-posix(1), sh(1), chdir(2).
STANDARDS CONFORMANCE
cd(1)