01-25-2006
With ksh:
$ filename=ALPHANUM.abc
$ echo ${filename#ALPHANUM\.}
abc
$
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I've got a bunch of files called oldabc, olddef etc.
i want to copy these to be abc, def....
I can do this with file extensions....but can get the logic to work for prefixes. All the files I am interested in have a prefix of 'old'.
This loop is no good for me....it looks at the content... (2 Replies)
Discussion started by: peter.herlihy
2 Replies
2. Shell Programming and Scripting
Remove prefix using awk
File:
nawk -F"|" '{if ($1 ~ /^xyz./) print; else { gsub(.*\..*, \..*, $1) ;print }}' file
Error:
ouput required: (5 Replies)
Discussion started by: pinnacle
5 Replies
3. Shell Programming and Scripting
Hello Gurus,
O/S RHEL4
I have a requirement to compare two linux based directories for duplicate filenames and remove them. These directories are close to 2 TB each. I have tried running a:
Prompt>diff -r data1/ data2/
I have tried this as well:
jason@jason-desktop:~$ cat script.sh ... (7 Replies)
Discussion started by: jaysunn
7 Replies
4. Shell Programming and Scripting
Hi,
I'm using a .ksh script to split one file into multible files by checking for the prefix per line. It works perfekt (thanks again for anyone involved in helping me with that ;)), but I want to remove the prefix per line too. Means only the line information itself should remain in the... (7 Replies)
Discussion started by: spidermike
7 Replies
5. Shell Programming and Scripting
hi all,
I want to remove filenames beginning with multiple dots.how I can do this.
Thanks in advance (5 Replies)
Discussion started by: sriharsharavi
5 Replies
6. UNIX for Dummies Questions & Answers
I have a group of files in different directories with characters such as " ? : in the file names. How do I find these files and remove these characters on mass?
Thanks (19 Replies)
Discussion started by: barrydocks
19 Replies
7. Shell Programming and Scripting
Hi,
I have files like below, In files coming as spaces. Before transfering those files into ftp server. I want to remove the spaces and then can transfer the files into unix server.
e.g: filenames are
1) SHmail _profile001_20120908.txt
2) SHmail_profile001 _20120908.txt
3) sh... (3 Replies)
Discussion started by: kirankumar
3 Replies
8. Shell Programming and Scripting
Dear all,
I have a dir structure like
main_dir
At_nn Ag_js Nf_hc ....
mcd32 mgd43... mcd32 mgd43... mcd32 mgd43...
and each subdir (e.g. mcd32, mgd43) contains files.
Now, i... (15 Replies)
Discussion started by: yogeshkumkar
15 Replies
9. Shell Programming and Scripting
hi,
i have a directory which contains some files and a subdirectory. i am writing only the files names to a file using the below code.
ls -ltr | grep "^-" | awk '{print $NF}' > /home/file_list$$
cat /home/file_list$$
s1_abc.txt
s2_def.xls
s3_def.xls
as you can see there is one .txt... (7 Replies)
Discussion started by: Little
7 Replies
10. Shell Programming and Scripting
Dear All,
assume i have a file with content:
<Start>6000</Start>
<Stop>7599</Stop>
the output is:
6000
7000
7100
7200
7300
7400
7599
how should we use any awk, sed, perl can do this task, means to extract the uniq prefixes from the start and stop prefix.
Thanks
Jimmy (3 Replies)
Discussion started by: jimmy_y
3 Replies
regcmp(1) User Commands regcmp(1)
NAME
regcmp - regular expression compile
SYNOPSIS
regcmp [-] filename...
DESCRIPTION
The regcmp command performs a function similar to regcmp and, in most cases, precludes the need for calling regcmp from C programs. Bypass-
ing regcmp saves on both execution time and program size. The command regcmp compiles the regular expressions in filename and places the
output in filename.i.
OPTIONS
- If the - option is used, the output is placed in filename.c. The format of entries in filename is a name (C variable) followed by
one or more blanks followed by one or more regular expressions enclosed in double quotes. The output of regcmp is C source code.
Compiled regular expressions are represented as extern char vectors. filename.i files may thus be #included in C programs, or
filename.c files may be compiled and later loaded. In the C program that uses the regcmp output, regex(abc,line) applies the regu-
lar expression named abc to line. Diagnostics are self-explanatory.
EXAMPLES
Example 1: Examples of the regcmp command.
name "([A-Za-z][A-Za-z0-9_]*)$0"
telno "({0,1}([2-9][01][1-9])$0){0,1} *"
"([2-9][0-9]{2})$1[ -]{0,1}"
"([0-9]{4})$2"
The three arguments to telno shown above must all be entered on one line.
In the C program that uses the regcmp output,
regex(telno, line, area, exch, rest)
applies the regular expression named telno to line.
ENVIRONMENT VARIABLES
A general description of the usage of the LC_* environmental variables can be found in environ(5).
LC_CTYPE Determines how regcmp handles characters. When LC_CTYPE is set to a valid value, regcmp can display and handle text and
filenames containing valid characters for that locale.
LC_MESSAGES Determines how diagnostic and informative messages are presented. This includes the language and style of the messages, and
the correct form of affirmative and negative responses. In the "C" locale, the messages are presented in the default form
found in the program itself (in most cases, U.S. English).
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWtoo |
+-----------------------------+-----------------------------+
|CSI |Enabled |
+-----------------------------+-----------------------------+
SEE ALSO
regcmp(3C), attributes(5), environ(5)
SunOS 5.10 Dec 20 1996 regcmp(1)